HomeMy WebLinkAboutResolution 5084-05-2019A Resolution
NO. 5084-05-2019
A RESOLUTION ADOPTING THE CITY OF FORT WORTH
INSTALLATION POLICY AND DESIGN CRITERIA FOR
WATER, WASTEWATER AND RECLAIMED WATER
INFRASTRUCTURE
WHEREAS, the purpose of the Installation Policy and Design Criteria for
Water, Wastewater and Reclaimed Water Infrastructure is to set the standards for the
construction of these facilities to protect the integrity of the City's Water and
Wastewater utility; and
WHEREAS, On August 08, 2017, the City Council approved M&C C-28333
to authorize Kimley-Horn and Associates Inc., to perform an update to the Installation
Policy and Design Criteria for Water, Wastewater and Reclaimed Water
Infrastructure; and
WHEREAS, a policy and design manual for Water, Wastewater and Reclaimed
Water Infrastructure has not previously been adopted by City Council in a cohesive
manual; and
WHEREAS, the updated policy and design criteria was presented to the DAC
on October 18, 2018; and
WHEREAS, the policy will be effective June 1, 2019.
NOW THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF
THE CITY OF FORT WORTH, TO:
Adopt the Installation Policy and Design Criteria for Water, Wastewater and
Reclaimed Water Infrastructure dated May 2019 to be effective June 1, 2019 for
concrete pavement.
Adopted this 71h day of May 2019.
ATTEST
J. Ka r
Y
City Secretary
FORT
FoRTWORTH.
WATER
City of Fort Worth Water Department
Installation Policy and
Design Criteria for
Water, Wastewater,
and Reclaimed Water
Infrastructure
May 2019
F_ORRT WORTH x `
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Document Number: Revision Number: ----
FORTWORTH I Approved By: Effective Date: 06-01-2019
Description of Last
Change:
Document Title: Installation Policy and Design Criteria for Water, Wastewater, and Reclaimed Water
Infrastructure
TABLE OF CONTENTS
SECTION 1 —INTRODUCTION ...............................................................................................1
1.1
Purpose.....................................................................................................................1
SECTION 2 — DEFINITIONS.....................................................................................................2
SECTION3 — POLICY...............................................................................................................8
3.1
General......................................................................................................................8
3.2
Requirements for Request for Service........................................................................9
3.3
Extension of Service...............................................................................................9
3.4
Cost Participation...............................................................................I...................28
3.5
Cost Recovery.........................................................................................................33
3.6
On -Site Systems......................................................................................................36
3.7
Ownership and Maintenance....................................................................................37
3.8
Standard Easements.................................................................................................38
3.9
Temporary Construction Easements ......................... .,..... .,.......................................
42
3.10
Easements for Existing Wastewater Mains in Urban Infill Areas .............................42
3.11
Shared Utility Easements........................................................................................43
SECTION 4 — PROCEDURE....................................................................................................46
4.1
General....................................................................................................................46
4.2
Project Process........................................................................................................46
4.3
Fees and Charges.....................................................................................................49
4.4
Pre -Qualification Requirements for Contractors ....................................... %,............ .51
4.5
Other Water/Wastewater Facilities..........................................................................52
4.6
On -Site Systems.....................................................................................................53
4.7
Pre-Treatment..........................................................................................................53
4.8
Backflow and Cross Connection..............................................................................53
TABLE OF CONTENTS i MAY 2019
TORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
SECTION 5 — DESIGN CRITERIA FOR WATER SYSTEMS................................................54
5.1
General....................................................................................................................54
5.2
Pressure Plane Areas...............................................................................................54
5.3
Minimum Water Main Size.....................................................................................56
5.4
Sizing Water Mains.................................................................................................56
5.5
Typical Layout of Water Mains, Service Lines, and Appurtenances within Right-of-
Way....................................................................................................................60
5.6
Horizontal/Vertical Alignment and Clearance Requirements...................................61
5.7
Water Main Separation from Wastewater Mains......................................................65
5.8
Water Main Materials and Embedment....................................................................65
5.9
Connections to Existing Water Mains......................................................................65
5.10
Dead End Water Mains............................................................................................66
5.11
Fire Hydrants...........................................................................................................67
5.12
Fire Lines................................................................................................................68
5.13
Gate Valve and Butterfly Valve Requirements.........................................................70
5.14
Cleaning Pigs and Wyes..........................................................................................71
5.15
Combination Air Valve Assemblies.........................................................................72
5.16
Blow -off Assemblies...............................................................................................72
5.17
Private Pressure Reducing Valves............................................................................73
5.18
Service Line and Water Meter Requirements...........................................................73
5.19
Water Sample Stations.............................................................................................75
5.20
Cathodic Protection.................................................................................................75
5.21
Backflow Protection................................................................................................75
5.22
Abandonment of Water Mains and Appurtenances..................................................81
5.23
Special Requirements for Critical Facilities.............................................................81
5.24
Crossings.................................................................................................................82
5.25
Pavement Repair.....................................................................................................87
SECTION 6 — DESIGN CRITERIA FOR WASTEWATER MAINS........................................88
6.1
General....................................................................................................................88
6.2
Minimum Wastewater Main Size.............................................................................88
6.3
Sizing Wastewater Mains........................................................................................88
6.4
Typical Layout of Wastewater Mains, Service Lines, and Appurtenances within
Right-of-Way..........................................................................................................92
TABLE OF
CONTENTS ii MAY 2019
FORT WORTH �
"r'"r� CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.5
Horizontal/Vertical Alignment and Clearance Requirements...................................93
6.6
Wastewater Main Separation from Water Mains......................................................96
6.7
Wastewater Main Materials and Embedment...........................................................97
6.8
Connections to Existing Wastewater Mains.............................................................97
6.9
Manholes.................................................................................................................98
6.10
Special Requirements for Wastewater Service Lines..............................................100
6.11
Cleanouts..............................................................................................................101
6.12
Closed Circuit Television Video (CCTV)..............................................................102
6.13
Inverted Siphons....................................................................................................102
6.14
Odor Control Unit.................................................................................................103
6.15
Pre-Treatment........................................................................................................103
6.16
On -Site Sewage Facilities......................................................................................103
6.17
Wastewater Lift Stations and Force Mains.............................................................103
6.18
Low -Pressure Systems...........................................................................................114
6.19
Bypass Pumping for Wastewater Mains.................................................................115
6.20
Abandonment of Wastewater Mains and Appurtenances........................................115
6.21
Crossings...............................................................................................................116
6.22
Pavement Repair...................................................................................................121
SECTION 7 - DESIGN CRITERIA FOR RECLAIMED WATER MAINS ............................122
7.1
General..................................................................................................................122
7.2
Sizing Reclaimed Water Mains..............................................................................122
7.3
Typical Layout of Reclaimed Water Mains, Service Lines, and Appurtenances
within
Right-of-Way........................................................................................................123
7.4
Horizontal/Vertical Alignment and Clearance Requirements.................................124
7.5
Reclaimed Water Main Separation from Water and Wastewater Mains
..................127
7.6
Reclaimed Water Main Materials and Embedment................................................127
7.7
Connections to Existing Reclaimed Water Mains...................................................128
7.8
Gate Valve Requirements......................................................................................128
7.9
Cleaning, Testing, and Sampling...........................................................................128
7.10
Combination Air Valve Assemblies.......................................................................129
7.11
Blow -off Assemblies.............................................................................................130
7.12
Backflow Prevention Device.................................................................................130
7.13
Hose Bibs and Faucets...........................................................................................130
TABLE OF CONTENTS iii
M,A�' 2019
t'ORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
7.14
Service Line and Reclaimed Water Meter Requirements........................................131
7.15
Cathodic Protection...............................................................................................132
7.16
Abandonment of Reclaimed Water Mains and Appurtenances...............................132
7.17
Crossings...............................................................................................................132
7.18
Pavement Repair...................................................................................................137
SECTION 8 — REQUIREMENTS FOR DRAWINGS.............................................................138
8.1
General Plan Sheet Requirements..........................................................................138
8.2
Survey Requirements.............................................................................................140
8.3
Water and Wastewater Main Plan and Profile Sheet Requirements ........................142
8.4
Standard Abbreviations.........................................................................................150
8.5
Standard Drafting Symbols....................................................................................151
SECTION 9 — VARIANCE PROCESS...................................................................................156
9.1
Request for Variance.............................................................................................156
9.2
Criteria for Granting of Variance...........................................................................156
9.3
Additional Requirements for Approval of Variance...............................................156
9.4
Deviations Approved by Water Department Staff..................................................157
9.5
Request for Variance Form....................................................................................160
APPENDIX A — WATER AND SEWER STUDY GUIDELINES..........................................161
APPENDIX B — TYPICAL LAYOUTS..................................................................................171
APPENDIX C — URBAN INFILL EASEMENT EXHIBIT.....................................................175
APPENDIX D — SHARED UTILITY EASEMENT EXHIBIT................................................177
TABLE OF CONTENTS iv MAY, 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
LIST OF TABLES
Table 3-1. Minimum Easement Widths for Mains.....................................................................40
Table 3-2. Easement Widths for Facilities and Appurtenances...................................................41
Table 3-3. Minimum Width Requirements................................................................................43
Table 5-1. Water Demands per Capita.......................................................................................57
Table 5-2. PVC Pipe Joint Restraint..........................................................................................62
Table 5-3. Flushing Requirements.............................................................................................67
Table 5-4. Combination Air Valve Assemblies..........................................................................72
Table 5-5. Blow -off Valve Size.................................................................................................73
Table 5-6. Backflow Prevention for Fire Lines..........................................................................78
Table 6-1. Minimum and Maximum Slopes...............................................................................88
Table 6-2. Wastewater Load per Capita.....................................................................................90
Table 6-3. Wastewater Peaking Factor......................................................................................91
Table 6-4. Maximum Distance Between Manholes....................................................................98
Table 6-5. Minimum Manhole Diameter...................................................................................99
Table 7-1. PVC Pipe Joint Restraint Length............................................................................124
Table 7-2. Combination Air Valve Assemblies........................................................................129
Table 7-3. Blow -off Valve Size...............................................................................................130
LIST OF FIGURES
Figure 3-1. SINGLE FRONTAGE............................................................................................14
Figure 3-2. SINGLE FRONTAGE - Water Service > 55 feet....................................................15
Figure 3-3. SINGLE FRONTAGE - WW Service > 55 feet......................................................15
Figure 3-4. SINGLE FRONTAGE - Water Crossing Non -City ROW.......................................16
Figure 3-5. SINGLE FRONTAGE - WW Crossing Non -City ROW.........................................17
Figure 3-6. SINGLE FRONTAGE - Water Main Size/Depth....................................................18
Figure 3-7. SINGLE FRONTAGE - WW Main Size/Depth......................................................18
Figure 3-8. SINGLE FRONTAGE - Condition/Criticality........................................................19
Figure 3-9. SINGLE FRONTAGE - Water Looping.................................................................19
Figure 3-10. SINGLE FRONTAGE - Looping and Water Service Line Length ........................20
Figure 3-11. SINGLE FRONTAGE - Looping and Non -City ROW..........................................21
Figure 3-12. SINGLE FRONTAGE - Looping and Water Size/Depth.......................................22
Figure 3-13. SINGLE FRONTAGE/Single Entrance Development...........................................22
Figure 3-14. MULTIPLE FRONTAGE DEVELOPMENT........................................................23
Figure 3-15. MULTIPLE FRONTAGE DEVELOPMENT - On -Site Mains..............................25
Figure 3-16. Wastewater Mains Along a Creek.........................................................................26
Figure 3-17. Wastewater Mains Along and Across a Creek.......................................................27
Figure 3-18. Wastewater Mains Along and Across a Creek.......................................................27
TABLE OF CONTENTS v MAY 2019
t'ORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
SECTION 1— INTRODUCTION
1.1 PURPOSE
1.1.1 The purpose of this manual is to establish the policies and procedures
governing facilities as well as design criteria for water, wastewater, and
reclaimed water systems to assist engineers in preparing designs for the
construction of these facilities. These policies, procedures, and criteria ar
applicable to engineering planning and design work performed by the Fo
Worth Water Department, engineering firms engaged by the City, or by other
public or private interests. Deviations from these policies and procedures will
not be acceptable without discussion and approval of a variance by the W.lter
Department Director.
INTRODUCTION 1 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
SECTION 2 — DEFINITIONS
Approach Main
The off -site main required to connect a development to a source of ample supply.
The limits of the approach main are from the point of connection to the existing main
to the point of connection to the Frontage Main.
Area Plan
A strategic plan that allows for growth and/or redevelopment within a particular area
or district with the City while maintaining a safe, reliable, and manageable system
through the identification of both planned improvements for the water, wastewater,
or reclaimed water system.
Certificate of Compliance
Official documentation issued by the City confirming that a property has been
platted.
Certificate of Convenience and Necessity (CCN)
Certification issued for Water or Wastewater utility service issued by the Public
Utility Commission (PUC) to a public or private organization to provide exclusive
water or wastewater service to a defined area.
City
Refers to the City of Fort Worth, Texas.
City Code
The Code of the City of Fort Worth (2015), as amended.
City Council
The governing body of the City of Fort Worth.
City Participation
The City's financial participation in a Community Facilities Agreement for the
construction of public infrastructure.
Community Facilities
Streets, sidewalks, storm drains, water and sanitary sewer facilities, bridges, culverts,
and other public infrastructure constructed pursuant to a Community Facilities
Agreement or other agreement between the City and a Developer.
Community Facilities Agreement (CFA)
A contract between a Developer and the City for the construction of Community
Facilities, on property in which the City has or will have an ownership or other legal
interest, that the City requires to be constructed as a condition of plat or plan
approval, or the issuance of a building permit.
DEFINITIONS 2 MAY 2019
TORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Critical Facilities
Any commercial building proposed to operate 24 hours per day such as, but not
limited to, hospitals, nursing homes, water -based or fire service reliant food
processing or manufacturing, hotels, incarceration facilities, telecommunication
facilities, data centers, or power supply facilities. Other commercial buildings tha
may not operate 24 hours per day, but are considered critical facilities include
dialysis centers, outpatient surgery centers, convention centers, coliseums,
auditoriums, and large -event arenas.
Cross -Connection
An unprotected actual or potential connection, mechanical or hydraulic union
between a potable water system and a recycled or other non -potable water systerr�
that would allow non -potable water to pass into the potable water supply.
Customer
Any individual or developer eligible for utility service in accordance with these
regulations.
Dead -End Main
A main in the water distribution system that is only fed from one end at the time f
installation.
Department
The department having jurisdiction over work being performed, including the Water
Department, Department of Transportation and Public Works, or other Department
of the City.
Developer
The owner, or the agent of an owner, of a tract of land that has been subdivided, is
being subdivided, or requires the construction of public infrastructure as a condition
of the approval of a plat, building permit, or other plans.
Development
Property on or to which a Developer is extending or constructing public
infrastructure to provide service to one or more existing or proposed lots, regardless
of whether the property is located in an area that was previously developed, or the
act of making improvements to property.
Director
The director of the Water Department, or their designee.
Engineer
See "Engineer of Record."
Engineer of Record
The Professional Engineer (P.E.) licensed in the State of Texas through the Texas
Board of Professional Engineers (TBPE) who is responsible for the signing and
DEFINITIONS 3 MAY 2019
FORT NORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
'441�
sealing of construction drawings, studies, calculations, and/or any other engineering
documents in accordance with TBPE's requirements for professional practice. Also
known as Engineer.
Existing, Occupied Parcel
A parcel of land containing an existing occupied residence or an existing commercial
building not presently connected to the City's water and/or wastewater systems.
Extraterritorial Jurisdiction (ETJ)
Unincorporated area extending generally five miles from the city limit in which the
City has the authority to regulate subdivision and platting of property.
Facility
Any structure, excluding mains, pertaining to a water, wastewater, or reclaimed
water system for the production, treatment, distribution, or collection of water and
wastewater, including, without limitation, wells, reservoirs, elevated tanks and
hydro -pneumatic tanks, pumping stations, master pressure reducing valves, water,
water and wastewater treatment facilities, wastewater lift stations, inverted siphons,
and force mains.
Fire Line
A private line for fire protection purposes connected to the City's water system that
connects to a fire extinguishing system with an automatic sprinkler system, a
standpipe system, a combined system, basement pipe inlet, and/or private fire
hydrants.
Frontage Main
The off -site main required to connect a development to a source of ample supply.
The limits of the frontage main are from the point of connection to approach main
across one full frontage of the property.
Front Foot Charges (FFC)
The charge made for a connection to a water, wastewater, or reclaimed water main,
in addition to the regular tap or service connection fee, based on the front footage
measurement of the property to be served. The amount of the front foot charge shall
be established by ordinance.
Front Footage
The number of linear feet in that portion of a property boundary abutting a street,
alley, or easement containing a water, wastewater, or reclaimed water main for
which front foot charges are collected for connection.
Impact Fee
A charge or assessment levied on new development in order to generate revenue to
fund the costs of general benefit facilities necessitated by and attributable to that new
development as specified in the Capital Improvements Plan (CIP) for Water, Water
Supply and Wastewater Improvements.
DEFINITIONS 4 MAY 2019
't�ORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Landowner
The holder of the legal title to a property, including the owner's agents, successo
and assigns.
Loading Analysis
A water, wastewater, or reclaimed water engineering capacity analysis as describ�d
in the Fort Worth Water Department's Water and Sewer Study Guidelines.
Master Plan
A comprehensive, strategic plan that allows for growth while maintaining a safe,
reliable, and manageable system through the identification of both short-term an
long-term planned improvements for the water, wastewater, or reclaimed water
system.
Mechanic's Lien and Note
A legal document that requires a homeowner or homebuyer to pay any debts due to
the construction or improvement of a property.
New Development
See Development.
Off -Site Mains
An off -site main consist of a water, wastewater, or reclaimed water main that is not
contained within a developing property but is constructed to provide service to the
property. Approach Mains and Frontage Mains are off -site mains.
On -Site Mains
An on -site main is one that provides service within a development.
On -Site Sewage Facilities
Wastewater systems designed to treat and dispose of effluent on the same property
the produces the wastewater in accordance with 30 Texas Administrative Code,
Chapter 285.
Ordinance
A law, statute, or regulation enacted by the City.
Oversizing
When City Participation in a CFA is used to make the public improvements large ,
longer or more enhanced than the Developer is required to construct.
Point of Connection
The location where an existing main connects to an approach main and/or the
location where an approach main connects to a frontage main.
Private Facilities or Improvements
Any improvements on private property where a public entity (i.e. the City) is not
considered the Owner.
DEFINITIONS > MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Property
An undivided tract or parcel of land having frontage on a public street, or upon an
approved access easement have direct public street access, and which is, or in the
future may be, offered for sale, conveyance, transfer or improvement.
Public Facilities or Improvements
Public facilities and/or improvements include water mains, wastewater mains, or
other similar improvements constructed within public right-of-way or easements.
Typically, the City maintains public improvements after expiration of any applicable
maintenance bonds.
Professional Engineer
A person duly authorized under the provisions of the Texas Engineering Practice
Act, as heretofore and hereafter amended, to practice the profession of engineering.
Redevelopment
See Development.
Right -of -Way (ROW)
A strip of land dedicated for use of public streets, alleys, and/or related facilities.
Other facilities include, but are not limited to, utilities, drainage systems, and other
transportation uses.
Service Area
The area within the boundaries defined by a Certificate of Convenience and
Necessity.
Service Line
The branch of pipe extending from the water, wastewater, or reclaimed water main to
the approximate location of the property or easement boundary intended to provide
direct retail service to a property.
Shared Access Development
A type of development where one or more of the lots within the development do not
front on a public or private street, where access to the lots within the development is
provided via a shared access easement that meets all of the requirements of satisfying
the City's requirements for a Shared Access Agreement consisting of, but not limited
to, a maximum length of privately maintained access for lots not exceeding 150 feet
in length.
Shared Utility Easement
An area designated for use as access to individual lots and placement of City and
franchise utilities within as designated in the City's Shared Access Agreement for a
Shared Access Development.
DEFINITIONS 6 NIAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Study
A water, wastewater, or reclaimed water engineering capacity analysis and report as
described in the Fort Worth Water Department's Water and Sewer Study Guidelines.
Subdivision Ordinance
The City's ordinance, and all subsequent revisions, regulating development with >he
City of Fort Worth.
Sub -Meters
Privately owned meters that can be used to encourage effective conservation and
efficient use of water by fairly allocating its cost among the ultimate users within a
master metered apartment unit, office building, or shopping center. The sub -meters
are not to be read and billed by the City as they are considered private meters.
TCEQ
Texas Commission on Environmental Quality.
Urban Infill
Areas designated within the City where there is development of vacant parcels
within previously built areas. These areas are already served by public infrastructure,
such as transportation, water, wastewater, and other utilities.
Wastewater Per Acre Charge
A charge based upon the demand required for the development with its basin area in
accordance with Division 3 — Sewer Per Acre Charges of City Code Chapter 35
Water Department Director
The duly appointed director of the Water Department, or their designee.
Water Department Staff
An employee of the City of Fort Worth Water Department.
Water Main Capacity Charge (WMCC)
A charge based on 1.0 million gallons per day (MGD) of maximum day demand
generated by a development in accordance with Division 4 — Water Capacity
Charges of City Code Chapter 35
Water/Wastewater Facilities
See "Facilities."
Zone of Influence
The notional envelope within which an external vertical load would exert stress
the pipe. The stressed zone beneath a foundation which is responsible for the
settlement of a structure.
DEFINITIONS 7 N11AY 2019
FORT WORTH
/ CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
SECTION 3 — POLICY
3.1 GENERAL
3.1.1 All platted property within the corporate limits of the City of Fort Worth
(City) connecting to the City's public water system shall connect as defined
by 30 Texas Administrative Code (TAC) Chapter 290 to supply drinking
water in adequate quantities and to furnish fire protection. Likewise, all
platted property within the corporate limits of the City connecting to the
City's wastewater collection system shall connect in accordance with 30 TAC
Chapter 217 to transport wastewater to a wastewater treatment facility.
Connections to the City's reclaimed water system shall be in accordance with
30 TAC Chapter 210 to provide reclaimed water service. This policy shall
govern the installation of all water, wastewater, and reclaimed water facilities
within the corporate limits of the City of Fort Worth, Texas, or other areas
approved by the City.
3.1.2 Extension Policy Outline — Sections 3.2 — 3.5 are used to describe the City's
requirements for main extensions, oversizing, cost participation, and cost
recovery. A brief description of each section is outlined below:
3.1.2.1 Section 3.2 Requirements for Service — This section includes
references to City Code and statutory requirements for connecting to
the City's water, wastewater, or reclaimed water system.
3.1.2.2 Section 3.3 Extension of Service — This section describes situations
that require main extensions or construction of water, wastewater, or
reclaimed water facilities. It also describes the City's right oversize
mains or facilities followed by various figures depicting potential
main extension examples.
3.1.2.3 Section 3.4 Cost Participation — This section includes the following
components:
• Development cost responsibilities;
• Situations that allow for request of City participation in cost of
improvements; and,
• City cost participation calculations.
3.1.2.4 Section 3.5 Cost Recovery — This section includes cost recovery
provisions for Developers and the City through Front Foot Charges,
Water Main Capacity Charges, or Wastewater Per Acres Charges.
POLICY 8 MAY 2019
TORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.2 REQUIREMENTS FOR REQUEST FOR SERVICE
3.2.1 Landowners who request a property be connected to the City's water,
wastewater, or reclaimed water system must:
3.2.1.1 Possess a Certificate of Compliance issued by the City stating the
property has been platted, unless the property was served prior to
September 1, 1987, and request to reestablish service in accordance
with Texas Local Government Code (TLGC) 212.0115 and City Code
Chapter 31.
3.2.1.2 Be located within the limits of the City, or the Landowner must either
petition the City for annexation into the City or enter into a pre -
annexation agreement with the City in accordance with the City's
Annexation Policy and Program, comply with TLGC 212.012 ,and
comply with the City's Subdivision Ordinance. Water, wastewater, or
reclaimed water service will not be available to land not contiguous to
the City limits and unable to be annexed in accordance with State
Law until such time annexation can occur, unless a pre -annexation
agreement is executed.
3.2.1.3 Be located within the current Certificates of Convenience and
Necessity (CCN) for water and wastewater of the City. If the property
is located outside the City's existing water or wastewater CCN, the
Landowner must consent the City's petition to the Public Utility
Commission in accordance with provisions set forth in the agreement
for service.
3.3 EXTENSION OF SERVICE
3.3.1 General — This section describes when a water, wastewater, or reclaimed
water main extension is required to provide service to a property. Payment
for the main extension is not included in this section and is described in
Section 3.4 (Cost Participation). Deviations from these requirements may be
allowed for certain circumstances that meet the general intent of this section
through a variance request in accordance with Section 9 (Variance Process).
3.3.2 Main Extension Terminology — Main extensions are required from the
existing main to a point across the full frontage of the developing property.
An Approach Main consists of that portion of the main from the point of
connection to the existing main to the nearest property corner of the
developing property. A Frontage Main includes the portion of the main
located within the frontage of the developing property. Frontage Mains shall
be extended across the full frontage of the developing property to allow for
service to future development. However, there may be situations that may not
POLICY 9 MAY 2019
FORT NORTH
\ CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
require a full frontage main extension such as topography, dead ends, or
service area limitations.
For these examples, a variance request may be submitted in accordance with
Section 9 (Variance Process). Elevations and grades for all wastewater
approach and frontage main extensions shall be designed to account for
service to surrounding properties.
3.3.3 Main Extension Requirements for New Development Areas — A water,
wastewater, or reclaimed water main extension is required to connect to a
developing property in any of the situations outlined below. See Section 3.4
(Cost Participation) for the City's participation policy.
3.3.3.1 Connecting a property to a water, wastewater, and/or reclaimed water
main located beyond the property boundary.
3.3.3.2 Connecting a property to a water main and/or wastewater main
through a shared utility easement.
3.3.3.3 Connecting a property to a 16-inch, or greater, water main or 15-inch,
or greater, wastewater main located along the frontage of property or
within the boundary of the property.
3.3.3.4 Connecting a property to a water, wastewater, and/or reclaimed water
main that requires a service line to:
• Cross a State Highway;
• Cross a property line;
• Cross a river, creek, or other water feature; or,
• Exceed 55 feet from the water/reclaimed water main to the meter
or from the wastewater main to the property line.
o Water/Reclaimed water service lines for residential
properties may be an exception to this requirement provided
that their service lines are no larger than 1 inch in diameter
and the service line is not spliced.
3.3.3.5 Connecting a property to water main and/or wastewater main at a
depth greater than 15 feet deep from the proposed surface to the top of
the main.
3.3.3.6 Relocating an existing water, wastewater, or reclaimed water main in
conflict with some element of the Development.
3.3.3.7 Looping — Connecting a property to a water or reclaimed water main
from the point of connection across the full frontage of the property to
POLICY 10 MAY 2019
FoRTWORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
a second point of connection when required to meet the capacity
requirements of the Water and Sewer Study Guidelines in accordance
with Section 5.4 (Sizing Water Mains) or Section 7.2 (Sizing
Reclaimed Water Mains).
3.3.4 Main Extension Requirements for Redeveloped Areas — A water, wastewater,
or reclaimed water main extension is required to connect to a developing
property located within an area containing existing water, wastewater, or
reclaimed water infrastructure if any of the following situations apply. See
Section 3.4 (Cost Participation) for the City's participation policy.
3.3.4.1 Connecting a property to a water, wastewater, and/or reclaimed water
main identified to have insufficient capacity to serve the property
according to the Water and Sewer Study Guidelines performed in
accordance with Section 5.4 (Sizing Water Mains) or Section 6.3
(Sizing Wastewater Mains).
3.3.4.2 Connecting a property to a water and/or wastewater main which has
been identified for replacement by the City's Risk Assessment
Programs.
Risk Assessment is generally based upon main condition and
criticality factors, such as, but not limited to:
o Age;
o Material;
o Maintenance/Work Order History;
o Pressure Impacts (water/reclaimed water);
o Actual Field Condition Data;
o Access Issues;
o Critical Facilities;
o Resiliency;
o Customers Served;
o Diameter; and/or,
o Sensitive Areas/Crossings.
3.3.5 Water, Wastewater, or Reclaimed Water Facility Requirements — A water
wastewater, or reclaimed water facility is required to:
Poi.[c�, I I MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.3.5.1 Connect a property to a water, wastewater, or reclaimed water main in
accordance with the Design Criteria and the requirements of an
approved Loading Analysis or Study warrants:
• A water or reclaimed water pump station to meet pressure or
capacity requirements;
• A water or reclaimed water elevated or ground storage tank;
• A wastewater lift station and force main; or
• A wholesale customer water, wastewater, or reclaimed water
meter station.
3.3.6 Oversize Requirements for Water, Wastewater, or Reclaimed Water Main
Extension or Facilities
3.3.6.1 The City may elect to require a water, wastewater reclaimed water
main extension, or a water or wastewater facility to be sized beyond
the capacity required by the Water and Sewer Study Guidelines and
require the main or facility to be sized in accordance with:
The City's Water, Wastewater, or Reclaimed Water Master
Plans;
• A City Area Plan; or,
• To meet general growth requirements, as determined by the City.
3.3.7 Cost for capacity exceeding the minimum size of the water, wastewater, or
reclaimed water main extension, or the requirements of the Water and Sewer
Study Guidelines shall be the responsibility of the City as determined and set
forth in Section 3.4 (Cost Participation).
3.3.8 Water, Wastewater, and Reclaimed Main Extension Examples
3.3.8.1 General — Water, wastewater, and reclaimed water mains shall be
sized to provide the capacity required by the development in
accordance with the Water and Sewer Study Guidelines as required in
accordance with Section 5.4 (Sizing Water Mains), Section 6.3
(Sizing Wastewater Mains), or Section 7.2 (Sizing Reclaimed Water
Mains). In no case shall the main size be less than the minimum main
size required, even if the capacity requirement is less than the
minimum size.
The examples in this section provide schematic configurations for
situations requiring a main extension, but examples may not address
all possible scenarios requiring extension.
POLICY 12 MAY 2019
SORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.3.8.2 Full Frontage — Frontage Mains shall be extended across the full
frontage of the developing property to allow for service to future
development.
• There may be situations that may not require a full frontage tain
extension such as topography, dead ends, or service area
limitations. For these examples, a variance request may be
submitted in accordance with Section 9 (Variance Process).
3.3.8.3 Elevations and grades for all wastewater approach and frontage main
extensions shall be designed to account for service to surrounding
properties.
3.3.8.4 Parallel Main Concept — Factors such as service line length, non -City
right-of-way crossings, main size, main depth, or other situations may
require an extension of a parallel main. Locations of proposed Point
of Connections to existing mains will be reviewed by the City to
ensure that the connection benefits the overall
water/wastewater/reclaimed water system and does not adversely
impact its existing customers.
Multiple connections to mains in similar locations will be
prohibited in most cases in lieu of a connection to an already
extended main, even if connecting to the existing main results in
a shorter extension length.
Certain situations may be prohibitive for the installation of a
parallel main, such as, but not limited to, congested corridors,
limited numbers of connections, geometry, topography, and
depth. In these limited situations, a variance request may be
submitted for consideration in accordance with Section 9
(Variance Process).
3.3.8.5 Single Frontage Developments —Developments with frontage al
o g
only one City right-of-way will require a main extension from the
point of connection across the property's full frontage. See
Figures 3-1 to 3-13 for extension examples for developments with
single frontage.
3.3.8.6 Multiple Frontage Developments — Developments with frontage along
more than one City right-of-way will require a main extension from
the point of connection across the property's full frontage(s) that is
proposed to have a service line or a connection for an on -site main
extension. No extension is required for frontage(s) where a service
line or main connection is not proposed, unless a second point of
connection is required to meet the capacity requirements of the Water
POLICY 13 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
and Sewer Guidelines. See Figures 3-14 and 3-15 for extension
examples for developments with multiple frontage.
3.3.8.7 Wastewater Mains Along Creeks, Rivers, Water Features —
Developments containing an existing wastewater main located along a
creek, river, water feature, or other topographic low, require a
wastewater main extension to adequately provide service to upstream
properties. See Figures 3-16 to 3-18 for extension examples for these
developments.
3.3.8.8 Shared Access Development — When connecting a property to a water
or wastewater main in accordance with a shared utility easement and
agreement, the Developer shall extend a water or wastewater main in
accordance with Section 3.11 (Shared Utility Easements).
3.3.8.9 Extension Examples with Figures:
Developments with Single Frontage — If an existing main is
located beyond a property's boundary, a main extension is
required to and across a property's full frontage from an offsite
point of connection to a water, wastewater, or reclaimed water
main along each frontage where service is required. See Figure
3-1. Other situations requiring main extensions due to service
line length, crossing non -City right-of-way, main size, main
depth, or on site main extensions, see Figures 3-2 to 3-13.
I
DEVELOPING
PROPERTY
PROPOSED
APPROACH
MAIN
CITY
RIGHT—OF—WAY
A
POINT OF PROPOSED
CONNECTION FRONTAGE FAIN
Figure 3-1. SINGLE FRONTAGE
Crossing Property Frontage in the Off -site Connection to a Water, Reclaimed Water, or Wastewater Main
Note: Wastewater mains shall end in a manhole in accordance with the Design Criteria. Main shown in this figure intended to
represent required limits of main installation.
POLICY 14 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
1
1 DEVELOPING 1
PROPERTY
EA 7
PROPOSED WATER
FRONTAGE MAIN
> 55' PROPOSED WATER CI i Y
APPROACH MAIN RIGHT--OF—WAY
EXISTING WATER
MAIN
PANT OF
CONNECTION
Figure 3-2. SINGLE FRONTAGE— Water Service > 55 feet
Crossing Property Frontage from a Point of Connection to a Water or Reclaimed Water Main where the Water or
Reclaimed Water Service Line exceeds a length of 55 feet from Main to Meter
DEVELOPING
PROPERTY `
PROPOSED. WASTEWATER
FRONTAGE MAIN
> 55` PROPOSED WASTEWATER CITY
APPROACH MAIN RIGHT—OF—WAY
EXISTING WASTEWATER
t--.— ww — — ww ww MAIN WW --ems—_ WW —i
POINT OF
CONNECTION
Figure 3-3. SINGLE FRONTAGE — WW Service > 55 feet
Crossing Property Frontage from a Point of Connection to a Wastewater Main where the Wastewater Service Line
exceeds a length of 55 feet from Main to Meter
POLICY 15 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
DEVELOPING
PROPERTY � 1
PROPOSED WATER
MAIN EASEMENT
PROPOSED WATER
FRONTAGE MAIN
%� yr • . �' %v � 7�
STATE HIGHWAYOR • ' \- PROPOSED WATER
NON — APPROACH MAIN INSTALLED PER
RIGHT—OF—WAY TXDOT/RAILROAD REQUIREMENTS
EXISTING WATER
MAIN
I W W W W W s
POINT OF __..
EXISTING WATER CONNECTION
MAIN EASEMENT
Figure 3-4. SINGLE FRONTAGE — Water Crossing Non -City ROW
Property Frontage from a Point of Connection to a Water or Reclaimed Water Main where the Water or Reclaimed
Water Service Line Crosses a State Highway or Railroad
POLICY 16 MAY 2019
{
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
_ 1
DEVELOPING
PROPERTY
PROPOSED
WASTEWATER
MAIN EASEMENT
9V N
STATE HIGHWAY
OR NON—COFW
RIGHT—OF—WAY
`—PROPOSED WASTEWATER
FRONTAGE MAIN
96' F f" F
PROPOSED WASTEWATER
APPROACH MAIN INSTALLED PER
TXDOT/RAILROAD REQUIREMENTS
1 9 4� 10 1/1
EXISTING WASTEWATER
MAIN
POINT OF
E?aSTING WASTEWATER CONNECTION
MAIN EASEMENT
Figure 3-5. SINGLE FRONTAGE — WW Crossing Non -City ROW
Crossing Property Frontage from a Point of Connection to a Wastewater Main where the Wastewater Service Line
Crosses a State Highway or Railroad
POLICY 17 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
NOTE: COVER IS
MEASURED AS DISTANCE
DEVELOPING i FROM THE TOP OF
PROPERTY SURFACE TO THE TOP OF
PIPE
PROPOSED WATER
FRONTAGE MAIN
CI 1 Y
EXISTING >16" WATER RIGHT—OF—WAY
MAIN OR WATER MAIN PROPOSED WATER
WITH >15' COVER APPROACH MAIN
i W W W W W
POINT OF
CONNECTION
Figure 3-6. SINGLE FRONTAGE — Water Main Size/Depth
Crossing Property Frontage from a Point of Connection to a Water or Reclaimed Water Main Greater than 16 inches or
Exceeding 15 feet of cover
NOTE: COVER IS
DEVELOPING MEASURED AS DISTANCE
PROPERTY FROM THE TOP OF
SURFACE TO THE TOP OF
PIPE
\—PROPOSED FRONTAGE
MAIN
CI i Y PROPOSED APPROACH MAIN
RIGHT—OF—WAY
EXISTING >150 WASTEWATER
MAIN OR WASTEWATER MAIN
WITH >15' COVER
WW - — WW 4-.T
WW �.�—_ WW —�
OF
CONNECTION
Figure 3-7. SINGLE FRONTAGE— WW Main Size/Depth
Crossing Property Frontage from a Point of Connection to a Wastewater Greater than 15 inches or Exceeding 15 feet of
cover
POLICY 18 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
t
N
DEVELOPING I
PROPERTY
LIMITS OF
REPLACEMENT
TO BE DETERMINED
BY THE CITY
CITY RIGHT—OF—WAY
t W W
EXISTING MAIN IDENTIFIED POINT OF
FOR REPLACEMENT AS CONNECTION
PART OF CITYS RISK PROPOSED FRONTAGE
ASSESSMENT PROGRAM MAIN
Figure 3-8. SINGLE FRONTAGE — Condition/Criticality
Crossing Property Frontage from a Point of Connection Replacing a Main Identified for Replacement as Part of the
City's Risk Assessment Program.
Note: Wastewater mains shall end in a manhole in accordance with the Design Criteria. Main shown in this figure intended
represent required limits of main installation.
I_
t W--------- lvww w w r � J
EXISTWG WATER MAIN POINT OF
CONNECTION
I
PROPOSED WATER I
APPROACH MAIN
I J
I 1
1
I I
DEVELOPING ( I
PROPERTY \
\\ I
PROPOSED WATER I
APPROACH MAIN
CITY
PROPOSED WATER 7
POINT OF o RIGHT—OF—WAY
CONNECTION FRONTAGE MAIN
Figure 3-9. SINGLE FRONTAGE— Water Looping
Crossing Property Frontage from a Point of Connection to a Water or Reclaimed Water Main to a Second Point of
Connection when required to meet the capacity requirements of the Water and Sewer Study Guidelines.
POLICY 19 MAY 2019
SORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
I r w w w w w
\—EASTING WATER MAIN POINT OF
CONNECTION
I
I
PROPOSED WATER I
APPROACH MAIN—'[N�
I
I
I
I I
N DEVELOPING
PROPERTY �I �
EA A
\—PROPOSED WATER
FRONTAGE MAIN
CITY
> 55' %�'—PROPOSED
RIGHT—OF—WAY
WATER
APPROACH MAIN
/EXISTING WATER
MAIN
1 �w _
w� __w w i
POINT OF
CONNECTION
w w I
Figure 3-10. SINGLE FRONTAGE — Looping and Water Service Line Length
Crossing Property Frontage from a Point of Connection to a Water or Reclaimed Water Main to a Second Point of
Connection (when required to meet the capacity requirements of the Water and Sewer Study Guidelines) and where
Service Line exceeds a length of 55 feet from Main to Meter.
POLICY 20 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
EXISTING WATER MAIN�
t w w w w w s
POINT OF
CONNECTION
I
I
PROPOSED —
WATER N
APPROACH
MAIN N
I
PROPOSED WATER
MAIN EASEMENT
7
%V r F %V
I PROPOSED WATER
l
I FRONTAGE MAIN
,
STATE HIGHWAY
RIGHT—OF—WAY PROPOSED WATER APPROACH
MAIN IN STEEL CASING
PIPE PER TXDOT REQUIREMENTS
t �Ww(POINT
w w w r
EXISTING WATER OF EXISTING WATER
MAIN EASEMENT CONNECTION MAIN
Figure 3-11. SINGLE FRONTAGE —Looping and Non -City ROW
Crossing Property Frontage from a Point of Connection to a Water or Reclaimed Water Main to a Second Point of
Connection where the Water or Reclaimed Water Service Line Crosses a State Highway
POLICY 21 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
w rw r r w w w f
EXISTING WATER MAIN POINT OF�
CONNECTION
NOTE: COVER IS
MEASURED AS DISTANCE
FROM THE TOP OF
SURFACE TO THE TOP OF
PIPE
PROPOSED WATER
APPROACH MAIN
I I
I I
i
I
DEVELOPING
PROPERTY
\\ I
I
PROPOSED WATER 0� '--PROPOSED WATER CITY
APPROACH MAIN FRONTAGE MAIN RIGHT—OF—WAY
r
POINT OF EXISTING >16' WATER
CONNECTION MAIN OR WATER MAIN
WITH >15' COVER
Figure 3-12. SINGLE FRONTAGE — Looping and Water Size/Depth
Crossing Property Frontage from a Point of Connection to a Water Main Greater than 16 inches or Exceeding 15 feet of
Cover to a Second Point of Connection
PROPOSED
APPROACH
MAIN
1 -
,\-POINT OF
CONNECTION
DEVELOPING
PROPERTY
PROPOSED FRONTAGE
MAIN
I
CITY
RIGHT—OF—WAY
T—r_
PROPOSED ON —SITE
PUBLIC MAIN EXTENSION
MEETING DESIGN CRITERIA
OF SECTIONS 5. S. OR 7
Figure 3-13. SINGLE FRONTAGE/Single Entrance Development
With Public On -Site Water, Reclaimed Water, or Wastewater Mains.
Note: Wastewater mains shall end in a manhole in accordance with the Design Criteria. Mains shown in this figure intended to
represent required limits of main installation.
POLICY 22 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Developments with Multiple Frontages: If an existing main is
located beyond a property's boundary, a main extension is
required to and across a property's full frontage from an offsite
point of connection to a water, wastewater, or reclaimed water
main along each frontage where service is required. Main
extensions are not required along each frontage if service or
main connections are not proposed along the other frontage(s).
See Figure 3-14.
_ _ 1
I � I
I
I
DEVELOPING
PROPERTY I
PROPOSED —
APPROACH
MAIN— — I L
--
PROPERTY SIDE
A OF SERVICE
PROPOSED FRONTAGE
MAIN
POINT OF I
CONNECTION f
Figure 3-14. MULTIPLE FRONTAGE DEVELOPMENT
Crossing Property Frontage in the Off -Site Connection to a Water, Wastewater, or Reclaimed Water Main
o Multiple Frontage with Long Services — A main extension is
required to and across a property's full frontage connecting
to a water or wastewater main where the service line would
exceed a distance of 55 feet from main to meter, see
Figure 3-2 or Figure 3-3.
o Multiple Frontage Crossing Non -City ROW— Amain
extension is required to and across a property's full frontage
connecting to a water or wastewater main where the service
line would cross a State Highway, or other non -City right-
of-way, see Figure 3-4 or Figure 3-5.
o Multiple Frontage with Large/Deep Mains — A main
extension is required to and across a property's full frontge
connecting to a water main greater than 16 inches, a
wastewater main greater than 15 inches, or any main
Pouc�, 21 MAY 2019
FORT WORTHORT �CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
exceeding 15 feet from the top of the main to the surface,
see Figure 3-6 or Figure 3-7.
o Multiple Frontage with Condition/Criticality Factors — A
main extension is required to and across a property's full
frontage replacing a main identified for replacement as part
of the City's Risk Assessment Programs, see Figure 3-8.
Developments with Multiple Frontages Requiring Looping —
When required to meet the capacity needed in accordance with
the Water and Sewer Study Guidelines, a water or reclaimed
water main extension is required from a point of connection
across the full frontage of the property to a second point of
connection.
o If an existing main is located beyond a property's boundary,
a main extension is required to and across a property's full
frontage from an offsite point of connection to a
water/reclaimed water main, see Figure 3-9.
o A main extension is required to and across a property's full
frontage connecting to a water/reclaimed water main where
the service line exceeds 55 feet of pavement, see
Figure 3-10.
o A main extension is required to and across a property's full
frontage connecting to a water/reclaimed water main where
the service line would cross a State Highway, see
Figure 3-11.
o A main extension is required to and across a property's full
frontage connecting to a water/reclaimed main greater than
16 inches or exceeding 15 feet from the top of the main to
the surface, see Figure 3-12.
Developments with Multiple Frontages and On -Site Extensions -
If an existing main is located beyond a property's boundary, a
water, wastewater, or reclaimed water main extension is required
from the point of connection across the property's full frontage
to terminate at the far property line when the development is
proposing to have a water, wastewater, or reclaimed water
connection for an on -site water, wastewater, or reclaimed water
main extension. See Figure 3-15. If looping is also required to
meet the capacity needed in accordance with the Water and
Sewer Study Guidelines, a water or reclaimed water main
POLICY 24 ivLw 2019
FORTWORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
extension is required from a point of connection across the R41
frontage of the property to a second point of connection.
I
1 PR��ITY ` I
I
PROPOSED
APPROACH
MAIN
PROPERTY SIDE
OF SERVICE
PROPOSED ON —SITE
POINT OF PUBLIC MAIN EXTENSION
CONNEOnON PROPOSED FRONTAGE (LOCATION OF MAIN CAN I i
MAIN VARY)
Figure 3-15. MULTIPLE FRONTAGE DEVELOPMENT - On -Site Mains
Crossing Property Frontage in the Off -site Connection to a Water, Reclaimed Water, or Wastewater Main for
Developments Proposing an On -site Extension
Note: Wastewater mains shall end in a manhole in accordance with the Design Criteria. Mains shown in this figure intended to
represent required limits of main installation.
Wastewater Mains along a Creek/River/Water Feature — When
connecting a property to a wastewater main located within an
easement paralleling a creek, river, water feature, or a
topographic low, and not located within City right-of-way, a
wastewater main extension is required from the point of
connection along the creek or the topographic low (outside the
floodway and top of bank) by extending through the property to
the far property line. See Figure 3-16. Depth of wastewater
main must allow for service lines to sufficiently cross beneath
water feature.
o If no wastewater service line connection, or no point of
connection to an on -site wastewater main, is required to
serve the development, then dedication of an easement and
wastewater main extension is required where the proposed
extension would occur to serve any or all upstream
properties.
POLICY 25 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
r-- ---
UNDEVELOPED
PROPERTY
EXISTING CREEK/RIVER/
I/K WATER FEATURE
PROPOSES}
WASTEWATERS
i EASEMENT
DEVELOPING /
PROPERTY
-PROPOSED
WASTEWATER
MAIM
EXTENSION I
EXISTING WASTEWATER
�X
MAIN i
EXISTING WASTEWATER
EASEMENT
Figure 3-16. Wastewater Mains Along a Creek
Crossing Property Following a Creek/River/Water Feature
Wastewater Mains Across and Along a Creek/River/Water
Feature — When connecting a property to a wastewater main
located within an easement paralleling a creek, river, water
feature, or a topographic low, and not located within City right-
of-way, a wastewater main extension is required from the point
of connection across and along, the creek or the topographic low
(outside the floodway and top of bank) by extending across the
frontage and/or through the property to the far property line. See
Figure 3-17 and Figure 3-18. Depth of wastewater main must
allow for service lines to sufficiently cross beneath water
feature.
POLICY 26 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
EXISTING CREEK/RIVER/—\
WATER FEATURE V/
DEVELOPING
PROPERTY
PROPOSED WASTEWATER
EASEMENT
C%
L PROPOSED i
WASTEWATER
r UNDEVELOPED I I MAIN EXTENSION
r PROPERTY I
----------J
II / -EXISTING WASTEWATER I
MAIN r
{ EXISTING WASTEWATER
EASEMENT
r
Figure 3-17. Wastewater Mains Along and Across a Creek
Crossing Property Following a Creek/River/Water Feature and Extending across Frontage
EXISTING CREEK/RIVER/
WATER FEATURE
r-- -- ------
UNDEVELOPED
PROPOSED
Ir
PROPERTY
WASTEWATERr
r
EASEMENT i
-
PR OPOSED
I G
r DEVEL�tNG
PROPERTY
r WASTEWATER
MAIN
EXTENSION
PROPOSED
WASTEWATER EXISTING WASTEWATER r
FRONTAGE MAIN MAIN r r
`-EXISTING WASTEWATER
EASEMENT
Figure 3-18. Wastewater Mains Along and Across a Creek
Crossing a Property's Full Length Within an Easement Following a Creek/River/Water Feature and/or Crossing the
Creek/River/Water Feature to Serve the Property
POLICY 27 MAY Mg
FORT WORTH_ CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.4 COST PARTICIPATION
3.4.1 The Developer shall construct a water, wastewater, or reclaimed water main,
or a water, wastewater, or reclaimed water facility, in accordance with the
Design Criteria and the City's Standard Construction Specifications and
Details that upon acceptance will become part of the City's water,
wastewater, or reclaimed water system. The Developer shall incur all cost
associated with providing water, wastewater, or reclaimed water main or
water, wastewater, or reclaimed water facilities as determined by City in
accordance with the Water and Sewer Study Guidelines. Cost includes, but is
not limited to, design, easements, property acquisition, permitting, fees,
charges, and construction associated with completing the improvements.
3.4.1.1 Examples of improvements to serve the development at 100%
Developer cost may include:
• Capacity improvements to serve the development;
• Relocation of mains due to a conflict created by the
development, regardless of the condition of the main; and/or,
• Replacement of mains with insufficient capacity to serve the
development.
• Extension of mains across one full frontage of the Development.
3.4.2 The Developer may request cost participation if one, or more, of the
following conditions exist:
3.4.2.1 City Main Oversizing —
Water or Wastewater — The City's minimum main size of 8-inch
diameter for water and wastewater mains per Sections 5 and 6
(Design Criteria for Water System Facilities and Design Criteria
for Wastewater System Facilities). The Developer may request
cost participation for the main if the improvement is a water or
wastewater main that has a diameter of greater than 8 inches and
the main capacity is greater than size of the main required to
serve the development as shown in the Water and Sewer Study
Guidelines.
Reclaimed Water — The City's minimum reclaimed water main
size of 6-inch diameter per Section 7 (Design Criteria for
Reclaimed Water Mains). The Developer may request cost
participation if the improvement is a reclaimed water main with
a diameter greater than 6 inches and the main capacity is greater
POLICY 28 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
than required to serve the development as shown in the Wate�
and Sewer Study Guidelines.
3.4.2.2 City Facility Oversize — The Developer may request cost participation
if the improvement is a facility, (pump station, lift station, storage
tank, or force main) not already included in the City's impact fee,
with greater capacity than required to serve the development as shown
in the approved Water and Sewer Study Guidelines.
3.4.2.3 Risk Based Assessment — The Developer may request 100% cost
participation from the City if an existing water, wastewater, or
reclaimed water main has been identified for replacement by the
City's Risk Assessment Programs and additional capacity is NOT
required to serve the development as shown in the Water and Sew r
Study Guidelines;
3.4.2.4 Tapping. Oversize — A Landowner may request cost participation
when an existing service tap is proposed to be replaced as part of E.n
existing CIP project and the Landowner requests the service tap sLe
to be increased from the size of the existing tap.
3.4.2.5 Certain Existing, Occupied Parcels — Landowners may request co 5t
participation when a single, or multiple, existing, occupied (by
persons) parcel, currently served by alternative systems, is serviceable
by an extension of an existing water or wastewater main.
3.4.3 City Cost Participation Calculations
3.4.3.1 Calculations for City Participation for main oversizing, facility
oversizing, and risk based assessment will be in accordance with the
City's Unit Price Ordinance.
3.4.3.2 Tapping Oversize — When the City is proposing to replace an existing
service tap as part of a CIP project, and a Landowner requests to
increase the size of the existing tap, the City will be responsible for
costs associated with the existing service tap size. The Landowner
will be responsible for the cost difference between the two service
taps. Developer's cost for the oversizing may include, as appropriate,
design, easements, permitting, Water Department fees and charges,
and construction cost. The construction cost of oversizing will be
based on the public bid price, City's tap fee, or the City's Unit Price
Ordinance, as applicable at the time of the request for oversizing.
Where the City requests to oversize a tap for service included in a
Community Facilities Agreement, City Participation will be in
accordance with the City's Unit Price Ordinance.
P01_1c), 29 M.w 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.4.3.3 Certain Existing, Occupied Parcels — As an incentive to connect to
the City's water, wastewater, or reclaimed water system, the City may
pay the cost for an extension up to 200 linear feet for parcels located
within the Fort Worth City Limits. No more than one extension credit
of 200 feet will be allowed for each separate single, existing, occupied
proposed parcel to be served, regardless of the number of buildings,
occupied or otherwise, which might be located on said lot or tract. To
be eligible for 200 feet credit, all parcels must be platted and contain
an existing water well (for water credit) or on -site sewage facility (for
wastewater credit). The following sections describe other eligible City
participation scenarios:
• Single, Existing, Occupied Parcel within 200 Linear Feet — City
participation of water, wastewater, or reclaimed water main
extension for a single, existing, occupied parcel where the total
extension of the main does not exceed 200 linear feet up to and
across the property frontage.
o City will pay for and install the main extension. Landowner
shall pay for the tap and impact fees.
Single, Existing, Occupied Parcel greater than 200 Linear Feet
— City participation of water, wastewater, or reclaimed water
main extension for a single, existing, occupied parcel where the
extension is greater than 200 linear feet up to and across the
property frontage.
o City will pay for the cost of extending the main a distance of
200 linear feet.
o The landowner will be responsible for paying the City the
actual cost of the main extension in excess of 200 feet,
together with such other costs required by City Code.
Payment shall be made prior to the beginning of
construction. In the event payment cannot be in full, the
property owner may execute a mechanic's lien and note
to guarantee payments of the extension cost.
In the event the Water Department Director agrees to
the execution of the mechanic's lien and note, the note
shall be for a term not to exceed 5 years and shall bear
interest at the highest rate permitted by law.
■ All cost of filing of the mechanic's lien shall be the
responsibility of the property owner.
POLICY 30 MAY 2019
FOR WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Any refund of front foot charges which may become
due to a single customer property owner making
payments on such a mechanic's lien will be credited
against the lien until such lien is satisfied.
Multiple, Existing, Occupied Parcels greater than 200 Linear
Feet — City participation of water, wastewater, or reclaimed
water main extension for multiple, existing, occupied parcel
where the extension is greater than 200 linear feet up to and
across the property frontage.
o Additional Credits for Multiple, Existing, Occupied Parcels
■ City will credit cost of extending the main a distance of
200 linear feet for each existing, occupied parcel to be
connected to the main.
■ Any main length in excess of 200 linear feet will be
paid for at the actual cost of the total excess length.
■ The actual number of existing, occupied parcels
connected to such extension at the time of construction
shall be responsible pro rata for payment to the City for
such excess length.
■ Properties connecting to such extension after
completion of construction shall be subject to front -foot
charges, such charges to be reimbursed as described in
this section.
o Existing Platted, Occupied Customer Parcels Exceeding 5
Parcels — In the case of an existing platted development, or
any development exceeding 5 parcels, where existing,
occupied parcels without existing water, wastewater, or
reclaimed water mains to provide service:
City will credit cost of extending the main a distance of
200 linear feet for each existing, occupied parcel to be
connected to the main.
To receive this credit, petition must be submitted to the
Water Department Director with the names signed and
printed, addresses, legal description of the property,
telephone numbers, and appointing a committee of not
more than 5 property owners of the area to be served.
All property owners included in the area must authorize
the committee to act in their behalf in negotiating with
P0�i_ic5, 31 MAY 2019
FORT WORTH
\� CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
the City on all matters pertaining to the water and/or
wastewater installation. A committee representative
shall be designated in writing as the contact person to
coordinate with Water Department staff.
o Water Department, at its cost, will furnish the necessary
maps and plans and perform the engineering design
connected with the water, wastewater, or reclaimed water
main extensions.
■ Design will begin once all service installation fees have
been paid by at least 25% of the proposed customers.
o The committee shall be responsible for all contact with the
other property owners in the area to be served and for
collecting and depositing with the Water Department all
required funds to be paid by the existing, occupied, single
customer property owners.
o The City, at its expense, shall extend water, wastewater, or
reclaimed water main up to 200 linear feet for each existing
single customer property that has met the requirements of
this section.
■ Construction will be released once all service
installation fees have been paid by at least 50% of the
proposed customers.
■ Parcels not choosing to connect for service will be
subject to Front Foot Charges in accordance with City
Code Chapter 35-58.
o The actual number of existing, occupied, single customer
parcels connected to the extension shall be responsible pro
rata for payment to the City for any excess length.
Payment for the extension, and such other costs as may
be required by the City Code, will be made in advance
of the construction, unless other arrangements are made
in advance, including the execution of a mechanic's
lien and note.
o The City will not extend the water, wastewater, or reclaimed
water main beyond the point of extension to serve the last
existing single customer property represented by the
committee.
Po[.icv 32 MAY 2019
ryORT WORTH
r/"� CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.5 COST RECOVERY
3.5.1 Developer Cost Recovery
3.5.1.1 General
In accordance with City Code Chapter 35, a developer may be
eligible for reimbursement for a portion of cost incurred for
improvements through Front Foot Charges, Water Main
Capacity Charges, or Wastewater Per Acre Charges.
Reimbursement may not exceed the cost of the improvements as
described in the following sections.
3.5.1.2 Front Foot Charges
Eligibility— A Developer is eligible for reimbursement of Front
Foot Charges when cost for a water or wastewater approach
main are incurred beyond the development property's
frontage(s), and/or costs are incurred for a frontage main.
o Frontage main eligibility may only occur when the
property's frontage main is shared with another property on
the opposing side of the street right-of-way to the
Developer's property is owned by a separate landowner not
affiliated with the Developer.
Application — Once the improvements required to serve the
development, as approved in the Water and Sewer Study
Guidelines, are determined, the Developer and Water
Department will document the limits of main eligible for
reimbursement of Front Foot Charges. Documentation can be
provided in a letter or email summary and will be logged in the
Water Department's Front Foot Charge database.
• Reimbursement of Front Foot Charges
o Front Foot Charges will be collected by City and shall
subject to the following conditions:
■ The City will collect front foot charges per the
provisions set forth in City Code Chapter 35-58.
Approach main reimbursement may be equal to, bI x
greater than, 100% of the cost for the water or
wastewater approach main incurred by Developer.
Poi_ic�' 3 NIA. - 2019
FORT FORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
■ Frontage main reimbursement may be equal to, but not
greater than 50% of the cost for the frontage main
incurred by the Developer.
■ Front foot charges will be assessed for a period of 20
years, commencing on the date that the City accepts the
water or wastewater main.
■ Collections and reimbursements of front foot charges
will cease when the Developer has been fully
reimbursed or the time period for assessment of front
foot charges has lapsed, whichever occurs first.
■ Reimbursement shall be made solely from front foot
charges collected by the City during the period that
front foot charges are assessed for the water or
wastewater service line connections and point of
connections to the water or wastewater main extension.
■ Any assignment of front foot charges must be approved
by the Water Department Director prior to the
execution of the assignment.
■ Existing community facilities agreements with mains,
or other facilities, eligible for front foot charge
collections will continue under the policy that was in
effect at the time the agreement was executed.
■ The reimbursement limit, together with the project
number, date construction was completed, permanent
record number of main, limits of portion of the main
upon which front foot charges are collectible, and name
of the entity entitled to the refund shall be documented
by the City.
■ Upon written request by the Developer, reimbursements
will be made annually during the last 2 months of the
calendar year from front foot charges paid to the City.
It is the responsibility of the developer/landowner
requesting the refund to prove their eligibility to receive
the reimbursement due.
In the event the developer/single customer property
owner fails to request a reimbursement of front foot
charges within 6 months after the expiration of the
POLICY 34 MAY 2019
FORT Wow
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
eligibility to receive funds, such un-reimbursed front
foot charges shall become the property of the City.
3.5.1.3 Developer Cost Recovery — Water Main Capacity/Wastewater Per
Acre
Eligibility— If reimbursement of front foot charges is impractical
due to the inability to directly connect a main for service, or if
the Developer elects to increase extend a main beyond what is
required to service the development, the Developer may request
reimbursement of wastewater per acre charges and/or water main
capacity charges.
Application — Once the improvements required to serve the
development, as approved in the Water and Sewer Study
Guidelines, are determined, the Developer and Water
Department will document the amount eligible for
reimbursement in accordance with Division 3 of City Code
Chapter 35 (Sewer per Acre Charges) and/or Division 4 of City
Code Chapter 35 (Water Main Capacity Charges). Cost recovery
to be documented by City Ordinance approved by City Council.
Reimbursement — The Developer will be reimbursed in
accordance with the provisions set forth in Division 3 of City
Code Chapter 35 (Sewer per Acre Charges) and/or Division 4 of
City Code Chapter 35 (Water Main Capacity Charges).
3.5.2 City Cost Recovery
3.5.2.1 Front Foot Charges
Eligibility— The City is eligible for reimbursement of Front Foot
Charges when the City constructs a water or wastewater main
extension at its sole cost and the water/wastewater main contains
frontage across unserved properties.
Reimbursement — Front Foot Charges will be collected by City
and shall be subject to the following conditions:
o The City will collect front foot charges per the provisions
set forth in City Code Chapter 35-58.
o Reimbursement shall be made solely from front foot charges
collected by the City during the period that front foot
charges are assessed for the water or wastewater service line
connections and point of connections to the water or
wastewater main extension.
POLICY 35 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.5.2.2 City Cost Recovery — Wastewater Per Acre/Water Main Capacity
Charge
• Eligibility — The City is eligible for reimbursement of
Wastewater Per Acre and/or Water Main Capacity Charges
when the City constructs a water or wastewater main extension
at its sole cost as a City -initiated CIP project or through City
participation in oversizing improvements.
• Reimbursement — City reimbursement shall be in accordance
with in provisions set forth in Division 3 of City Code Chapter
35 (Sewer per Acre Charges) and/or Division 4 of City Code
Chapter 35 (Water Main Capacity Charges).
3.5.3 Shared Cost Recovery
3.5.3.1 Should the City elect to oversize a water or wastewater main that is
eligible for cost recovery, both the City and Developer may be
reimbursed for Front Foot, Water Main Capacity, and/or Wastewater
per Acre Charges. The allocation of reimbursement eligibility
between the City and Developer will be determined based upon the
City Cost Participation Calculation percentages established in Section
3.4 (Cost Participation). All other reimbursement provisions will
follow the provisions set forth above in this section.
3.6 ON -SITE SYSTEMS
3.6.1 In accordance with City Code Chapter 35-3, any property within 50 feet of an
existing public water main is required to connect to the City main. In
accordance with City Code Chapter 35-135, any property within 100 feet of
an existing City wastewater main is required to connect to the City
wastewater main. Developments within the city limit shall be required to
have approved water supply and wastewater facilities and shall be required to
connect to the Water Department facilities, unless alternative on -site systems
have been approved by the Water Department Director. See City Code
Chapter 35 Article V and Section 4 (Procedure) for on -site system
requirements. Use of holding tanks for temporary sewage disposal is not
allowed.
3.6.2 Property to be served by the City's wastewater system but having individual
water wells are required to install dry water mains and service lines to allow
for a future connection to the City water system for domestic and fire
protection purposes.
3.6.2.1 Water main and service line installation shall conform to the
requirements of Section 5 (Design Criteria for Water Systems) and
the City's Standard Construction Specifications and Details.
Poi.icv 36 NI v) 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.6.2.2 Deviations from this requirement require approval from the Water
Department Director through a variance request in accordance witI
Section 9 (Variance Process).
3.7 OWNERSHIP AND MAINTENANCE
3.7.1 Water, Wastewater, and Reclaimed Water Mains - Title to all water,
wastewater, and reclaimed water mains constructed under this policy that
have been completed and accepted by the Water Department Director, ex ept
title to wastewater service connections, shall be vested in the City.
3.7.2 Title to all Water and Wastewater Service Connections
3.7.2.1 Water Service Connections
• Domestic/Irrigation Service Connection
o Upon completion and acceptance by the Water Departm nt
Director, title to all water service connections for
domestic/irrigation service from the water main to the
meter, to include the meter and meter box or vault, shall e
vested in the City.
• Fire Line Connection
o Upon completion and acceptance by the Water Department
Director, title to all fire line connections from the water
main to the gate valve on the City side of the double
detector check shall be vested in the City.
o Installation of the double detector check shall be in
accordance with the Water Department's Backflow
Prevention Policy.
If the gate valve is located in the street, title to the fire
line connection will be from the water main
(downstream of the gate valve) to the curb line adjacent
to the property served.
■ If the gate valve is located at the property line of the
property being served, title to the fire line connection
will be from the water main to the gate valve.
3.7.2.2 Wastewater Service Connections
• The Developer or existing, occupied parcel Landowner shall e
responsible for the operation and maintenance of the service
connection within private property. City is responsible for
Pol,[CN, 37 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
operation and maintenance from the main to the
cleanout/property line.
3.7.2.3 Reclaimed Water Service Connections
• Upon completion and acceptance by the Water Department
Director, title to all reclaimed water service connections from
the water main to the meter, to include the meter and meter box
or vault, shall be vested in the City.
3.7.3 City Responsibility for Water, Wastewater, and Reclaimed Water Mains and
Facilities
3.7.3.1 The City shall operate and maintain only those water, wastewater, and
reclaimed water mains facilities, whose titles are vested in the City.
All mains and facilities to be maintained by the City shall be located
within City right-of-way, approved permits, or within water,
wastewater, or reclaimed water easement.
3.8 STANDARD EASEMENTS
3.8.1 The following requirements apply to water, wastewater, reclaimed water, and
force mains that are not installed within street right-of-way. All required
easements must be fully executed and submitted to the City prior to
commencing construction activity within the easement.
3.8.1.1 If a water, wastewater, or reclaimed main is proposed to be within, or
cross, an existing dedicated City Park, a park conversion will be
necessary in accordance with the City's Parks and Recreation
Department's requirements.
3.8.2 Standard Plat Provisions
3.8.2.1 Fort Worth Water Department easements are in accordance with
Standard Plat Provisions as follows:
Any public utility, including the City of Fort Worth, shall have
the right to move and keep moved all or part of any building,
fence, shrub, other growth or improvement which in any way
endangers or interferes with the construction, maintenance or
efficiency of its respective system on any of the easements
shown on the plat; and they shall have the right at all times to
ingress and egress upon said easements for the purpose of
construction, reconstruction, inspection, patrolling, maintaining,
and adding to or removing all or part of its respective systems
without the necessity at any time of procuring the permission of
anyone.
POLK) -IS N L\a , 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.8.3 Format — All easement instruments shall be in a standard City format with
standard City language.
3.8.3.1 For each easement submitted, a minimum of 2 easement instruments
with original signature(s) of the property owner(s) and notary
signature/seal is required.
3.8.3.2 If the easement is to be acquired by the City, a minimum of 2
easement instruments in a standard City format is required. All
easement instruments shall be in a form acceptable to the City.
3.8.4 Filling — Excessive filling of material should not be allowed on top of any
easement. If filling is proposed, calculations, sealed by a Licensed
Professional Engineer, must be submitted to evaluate the impact of the
additional fill material with respect to the main.
3.8.5 Minimum Vertical Clearance — The minimum vertical clearance for items
such as, but not limited to, structures, awnings aerial walkways, etc., abov
any easement is 25 feet. This allows a typical backhoe to maneuver in the
case where a repair is necessary and minimizes the risk to the City and the
grantor of the easement.
3.8.5.1 Overhead utilities may be allowed to cross with a clearance of less
than 25 feet but should be avoided when possible.
3.8.5.2 Vertical clearance requirements for Shared Access Developments are
outlined in Section 3.11 (Shared Utility Easements)
3.8.6 Minimum Horizontal Clearance — The minimum horizontal clearance
between proposed lines and existing/proposed foundations, piers, or other
vertical structures shall be 10 feet, as measured from outside edge to outside
edge.
3.8.6.1 For horizontal clearance requirements for Certain Urban Infill Areas
and Shared Utility Easements, see Sections 3.10 and 3.11,
respectively.
3.8.7 Proximity of Lot Lines — Easements parallel to lot lines shall be wholly
contained on one lot and shall not cross lot lines.
3.8.8 Minimum Easement Widths
3.8.8.1 General — The easement widths provided in this section are necessary
to meet the minimum requirements for proper maintenance of mains,
facilities, and appurtenances. However, certain circumstances, such
as, but not limited to, topography or accessibility, may dictate the
necessity for the City to acquire additional easement.
39 M,aN' 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.8.8.2 10 feet Depth or less - For water mains, wastewater mains, reclaimed
water mains, and force mains installed at a maximum depth of 10 feet
(measured from the ground level to the pipe flowline) outside of the
public right-of-way, the main shall be installed within an easement
with a minimum width in accordance with Table 3-1. Single mains
shall be centered within the permanent easement, unless adjacent to
City right-of-way.
Table 3-1. Minimum Easement Widths for Mains
Main Type Main Size Easement Width (feet)
12-inch or less (adjacent to City right-
of-way) 10
Water/Reclaimed Water I 12-inch or less 15
Mains I 16-inch 20
24-inch to 30-inch 25
36-inch or larger 30
15-inch or less
(adjacent to City right-of-way) 10
Wastewater/Force Mains i 15-inch or less 15
18-inch to 24-inch 20
27-inch to 48-inch 25
54-inch or larger 30
Water mains (12-inch or less) and
wastewater or force mains (15-inch or 25
less)
Water and Reclaimed Water mains
Combined Mains (12-inch or less) and wastewater mains 30
(15-inch or less)
Two Water mains (I2-inchor less) 25
Other combined mains Per approval of Water
Department Director
3.8.8.3 Greater than 10 feet Depth - For water mains, wastewater mains,
reclaimed water mains, and force mains with depths greater than 10
feet (measured from ground level to flowline of pipe), the following
equation will apply:
Easement Width' = [(Depth of Pipe) x 2] + (O.D.2 of Pipe) + (2 feet)
Note: 1 — Width is rounded W to nearest 5 feet.
2 — O.D. is outside diameter of pipe.
Easement shall not exceed 70 feet in width, unless required by special
circumstances.
Poi.ic), 40 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.8.8.4 If depths of mains vary across the easement, the largest resulting
easement width shall apply, unless approved otherwise at the
discretion of the Water Department Director.
Easement widths shall not vary within the same parcel/lot.
3.8.9 Facility/Appurtenance Easement Widths
3.8.9.1 Water, Wastewater, and Reclaimed Water facilities and appurtenances
located outside of the street right-of-way shall be placed in a facility
easement, as required by Table 3-2.
Table 3-2. Easement Widths for Facilities and Appurtenances
Facility/Appurtenance Easement Width (feet)
2" Water Meters and smaller 5 x 5
3" and 4" Water Meters 10 x 10
6" and 8" Water Meters 15 x 15
Fire I3ydrant 10 x 10
Sampling Station 10 x 10
Air Valve Assembly 10 x 10
Blow -off Valve Assembly 10 x 10
Grinder Pump 10 x 10
Wastewater Access Chamber 10 x 10
3.8.10 Easements for Off -Site Facilities
3.8.10.1 The developer shall be responsible for 100% of the cost to acquire
easements for all off -site facilities sized solely to properly serve th
proposed development (no over -sizing required).
3.8.10.2 Where facilities are over -sized by the City (greater than that which the
developer needs to properly serve the proposed development) and
where the City desires to acquire a larger easement for future
facilities, the City has the option to acquire additional easements for
approach mains through negotiation and/or condemnation. The
developer shall be responsible for the cost of the portion of the
easement required to properly serve the proposed development and
the City shall be responsible for that portion of the easement required
for over -sizing, or for future facilities.
3.8.10.3 The City shall not be responsible to the developer for any delays,
costs, expenses, or damages of any kind or nature caused to the
developer during the time that the City is in the process of acquiring
any easements through negotiation and/or condemnation.
3.8.10.4 In the event the developer desires to acquire the required easements,
the developer shall notify the City, in writing. In such case, the
P()[.i(,), 41 NIA 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
developer shall be responsible for 100% of the cost of the entire
easement.
3.8.11 Easements Required for Relocation/Replacement — The developer shall
dedicate such easements or right-of-way within the development as may be
required to permit construction of the relocation/replacement. Responsibility
for the acquisition of easements outside of the development shall be as
provided for easements for approach facilities.
3.9 TEMPORARY CONSTRUCTION EASEMENTS
3.9.1 Off -site water, wastewater, or reclaimed water lines, force mains, or other
facilities to be constructed outside the developer's property may require
additional temporary construction easements. These easements are in addition
to the above listed permanent easements.
3.10 EASEMENTS FOR EXISTING WASTEWATER MAINS IN URBAN INFILL
AREAS
3.10.1 Certain areas designated by the City as Urban Infill may have existing alleys,
or existing easements, containing existing wastewater mains. If Standard
Alley width, or Standard Easement width requirements per Section 3.7
(Standard Easements), cannot be accommodated due to existing physical
conflicts, a variance may be granted by the Water Department Director for a
minimum wastewater easement width of 10 feet or use of a substandard alley,
provided that all of the following conditions are satisfied:
3.10.1.1 Franchise utilities are located outside of the wastewater easement.
3.10.1.2 The existing wastewater main does not exceed 8-inches in diameter
with a maximum depth of cover of 6.5 feet.
3.10.1.3 No water mains or storm drains exist within the alley.
3.10.1.4 No physical encroachments exist with the easement or alley.
3.10.1.5 Existing buildings are verified to be constructed with pier, or other
deep -type foundations, or the foundations can be verified by a
Licensed Professional Engineer to be outside of the zone of influence
of any construction associated with maintaining the existing main.
3.10.1.6 A minimum vertical clearance of 18 feet is provided above the
wastewater main.
3.10.2 A request for variance meeting these conditions can be submitted in
accordance with Section 9 (Variance Process).
POLICY 42 MAY 2019
SORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
3.11 SHARED UTILITY EASEMENTS
3.11.1 In the event that a Standard Easement cannot be provided per Section 3.7
(Standard Easements) and the development satisfies all of the City's
requirements for the creation of a Shared Utility Easement; upon the approval
of the Water Department Director, a combined water/wastewater easement
may be allowed provided that the following requirements are met:
3.11.1.1 Easement Width — For shared access developments including public
water and wastewater mains, the following easement widths apply:
Table 3-3. Minimum Width Requirements
Shared Utility Easement Water and Wastewater Easement
22 feet* 12 feet
20 feet** 18 feet
* includes 10' Public Utility Easement containing gas, electric, and communication on one side, or
a 5' Public Utility Easement on each side, of the Water and Wastewater Easement.
** assumes no Public Utility Easement with 5.5 feet horizontal clearance for wastewater main and
8 feet for water main from edge of easement.
3.11.1.2 General Requirements
• Water or wastewater mains located in a shared utility easement
may only provide service to lots directly adjacent to the shared
utility easement.
• The minimum vertical clearance above the water and wastewater
easement shall be 18 feet.
• Traffic rated water meter lids and wastewater cleanout covers
are required.
• No parking is allowed over the water and wastewater easement.
• No public or private storm drainage is allowed within the water
and wastewater easement.
• Water and Wastewater separation must be 4 feet as measured
from the outside edge of the water and wastewater mains.
• The maximum length of the street is 150 feet.
3.11.1.3 Water Main Requirements
• Size — 4-inch
o Developments requiring larger than 4-inch water mains,
must meet standard easement width requirements.
POLICY 41) Nl,r N, 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• Location — Water main must be a minimum distance of 2.0 feet
from the edge of water and wastewater easement to the
centerline of the water main (opposite side of the wastewater
main) and adjacent to a minimum 10-foot wide public utility
easement. See Appendix.
o The minimum horizontal clearance between the water main
and the franchise gas main is 5.5 feet as measured from the
centerlines of each main.
o An alternative layout includes 5-feet public utility
easements on each side of the Water and Wastewater
Easement and is shown in the Appendix.
• Cover — 4 feet maximum cover, 3 feet minimum cover
• A 6-inch isolation gate valve shall be provided at the boundary
line of the shared access development and the public right-of-
way.
• No fire line connections or fire hydrants can be located within
the shared access development.
• Dead end mains cannot exceed 150 feet in length.
o Any main terminating as a dead-end may be required to
install an automatic flushing device. A water meter should
be installed with the device. Device must be located within
the water and wastewater easement and discharge directly to
a wastewater manhole with an appropriate backflow device
to prevent cross connections.
3.11.2 Wastewater Main Requirements
• Material — Wastewater main material shall be ductile iron pipe
(lined with Protecto 401) or SDR 26, ASTM D2241, PR 160
PVC pipe with pressure rated joints.
o PVC pipe must be green in color.
• Size — 8-inch
o Developments requiring larger than 8-inch wastewater
mains, must: meet standard easement width requirements.
• Location — Wastewater main must be a minimum distance of 5.5
feet from the edge of water and wastewater easement to the
centerline of the wastewater main. (opposite side of the water
main) See Appendix.
POLICY 44 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o An alternative layout includes 5-feet public utility
easements on each side of the Water and Wastewater
Easement and is shown in the Appendix.
• Cover — 6.5 feet maximum cover
o Depth of cover cannot be shallower unless it can be
demonstrated that all service mains (including franchise
can be adequately installed in the corridor.
• Wastewater mains shall terminate with a manhole. Wastewater
Access Chambers may only be considered in narrow corridors
where vehicular access is prohibited.
• The minimum slope of the wastewater main shall be 0.75% due
to anticipated low flow condition.
3.11.3 The City has no obligation to maintain the Shared Utility Easement,
including its surface. If a Shared Utility Easement is not maintained in
compliance with the requirements set forth in the Shared Access Agreement,
the City shall have the right, but not the obligation, to take those actions
necessary to repair the surface. Any cost associated with surface repairs will
be the development's responsibility in accordance with the agreement.
POLICY 45 M.aY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
SECTION 4 — PROCEDURE
4.1 GENERAL
4.1.1 These procedures for the planning and design of water, wastewater, and
reclaimed water facilities are furnished to prevent delays, improve
uniformity, and secure adequate drawings so that these facilities will be
designed and constructed as economically as feasible to meet present and
future requirements. These procedures are provided to supplement the City of
Fort Worth's overall development/redevelopment procedures and do not
replace requirements set forth in other City documents such as, but not
limited to, the City's Policy for the Installation of Community Facilities.
4.2 PROJECT PROCESS
4.2.1 Water/Wastewater Loading/Study Determination
4.2.1.1 Prior to formal submission of a Preliminary Plat, Infrastructure Plan
Review Center (IPRC) process, Community Facilities Agreement
(CFA), redevelopment, or new building permit process, the Developer
is recommended to contact Water Department Staff to determine
Loading Analysis or Study Requirements. The Developer shall be
prepared to discuss the following:
• General overview and location of the development project;
• Summary of proposed water, wastewater, and/or reclaimed water
demands; and,
• Demonstration of how the proposed system will connect to the
City's existing system.
4.2.1.2 Water Department Staff shall have the final decision in determining
whether a Loading Analysis or Study will be required to be submitted
for review. In general, a Water Loading Analysis will be sufficient for
smaller developments that do not contain a fire service line. A
Wastewater Loading Analysis will be sufficient for most
developments as long as the capacity of the existing main will not be
exceeded with the additional load, or the existing main is not already
identified to be constructed in the Department's Master Plan. A Study
will be required for all other developments. The following contains
requirements and references for Loading Analysis and Studies:
• Loading Analysis
o The Developer shall submit the Loading Analysis in
accordance with the Department's requirements. Water and
Sewer Study Guidelines are attached in the Appendix.
PROCEDURE 46 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o Upon submittal to the Water Department and subsequen
review, comments will be provided, if necessary. Once the
submittal is determined to meet the Water Department's
requirements, the development may proceed to Cost
Participation Determination, if necessary.
• Study
o The Developer shall submit the Study in accordance with
the Department's requirements. In general, the study shall
be prepared in report format and be sealed by a Licensed
Professional Engineer in the State of Texas. In general, the
study should address the following sections: Purpose and
Scope, Design Criteria, Hydraulic Analysis, and
Recommendations. Refer to the Water and Sewer Study
Guidelines, attached in the Appendix, for more specific
requirements.
o Upon submittal to the Water Department and subsequent
review, comments will be provided, if necessary. Once the
submittal is determined to meet the Water Department's
requirements, the development may proceed to Cost
Participation Determination, if necessary.
Developments containing Loading Analysis and Study
Requirements
o It is possible for a proposed development to be required ib
submit a Loading Analysis for one type of service (i.e.
wastewater) and a Study for another type of service (i.e.
water). In this event, comments must be addressed and rr.eet
the Water Department's requirements for all types of service
(water/wastewater/reclaimed water) prior to proceeding 0
Cost Participation Determination, if necessary.
4.2.2 Cost Participation Determination
4.2.2.1 Once the Loading Analysis and/or Study meets the requirements of
the Water Department, the Water Department Staff will review and
recommend approval of the proposed improvements. In accordance
with Texas Local Government Code 212.904, the Developer's portion
of the cost of improvements must be determined by a Licensed
Professional Engineer retained by the City and may not exceed the
amount required that is roughly proportionate to the improvements
required to serve the development. Cost Participation, if any, will )fie
determined in accordance with Section 3 (Policy).
PROCEDURE 47 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
4.2.2.2 Community Facilities Agreement (CFA) — If it is determined City
Participation will be provided, the developer shall be required to
apply for a CFA in accordance with the City's Community Facilities
Agreements Ordinance In general, the CFA process requires bonding
and a public bidding process, with bid openings held at the City.
Community Facility Agreements often require City Council approval
depending upon their contract amounts.
IPRC Process — Upon determination of City Participation, the
development may begin the IPRC process for preparation and
review of construction drawings and specifications in
accordance with the City's Community Facilities Agreements
Ordinance.
Pre -Qualification Requirements — Once the required facility
improvements have been determined by the Water Department
Staff, any public improvements must be constructed by a Water
Department approved pre -qualified contractor. Pre -qualification
requirements are outlined in Section 4.4 (Pre -Qualification
Requirements for Contractors).
4.2.2.3 Miscellaneous Contracts — The Department's Miscellaneous Contract
process in an in-house option for design and construction of water or
wastewater infrastructure. Construction schedules for Miscellaneous
Contracts are often more streamlined than the CFA process, but can
be impacted by current construction workload and available contract
funding.
• Miscellaneous Contracts are intended for the following types of
infrastructure:
o Fire line taps
o Water service lines 2-inches, or smaller
o Water service taps greater than 2-inches
o Water or wastewater mains 16-inch, or smaller and less than
600 linear feet.
• At the discretion of Water Department Staff,
o Water or wastewater infrastructure that does not qualify for
the Miscellaneous Contract process, may be approved if
combined with infrastructure that does qualify for a
Miscellaneous Contract process.
PROCEDURE 48 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o Special, or unique, challenges may prohibit the Depart Tnt
from accepting a Miscellaneous project.
• Downtown Developments — Development improvements within
the City's Downtown Central Business District are not eligible
for the Miscellaneous Contract process unless granted prior
approval from the Water Department Director.
• Any facilities or services that require a street cut on a newly
paved street are not eligible for the Miscellaneous Contract
process.
If a project eligible and accepted for the Water Department's
Miscellaneous projects process, all required fees must be pain to
the City before any CFA-related holds on the Project may be
released.
o Miscellaneous contract projects will be reconciled upon
completion, and any outstanding fees more than $200 I
A
be paid to the City by the Developer. In the case of
overpayment, the difference shall be refunded by the City to
the Developer.
4.2.2.4 Water Department Coordination — Coordination with the Water
Department Staff for the various items above may be completed vita
telephone conversations, mail, email correspondence, or schedule
meetings. Meetings are encouraged for developments containing
unique circumstances.
4.3 FEES AND CHARGES
4.3.1 Service Installation Fees
4.3.1.1 The Water Department has separate service installation fees that may
apply to developments. Some of the more common fees include
Impact Fees, Tapping Fees, and Meter Deposits and are described in
more detail below. Depending upon the type of development,
additional fees associated with service installations may apply.
Contact the Water Department to determine if other fees may need to
be planned for the improvements.
Impact Fees — Water and Wastewater impact fees are one-time
fees assessed at the time that the final plat is recorded and are
based on the size of the water meter installed. Impact fees apply
to domestic and irrigation meters, but not fire line meters, and
are calculated in accordance with the requirements set forth in
Texas Local Government Code Chapter 395 and codified in City
PROCEDURE 49 Nhn 2019
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`14/'CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Code Chapter 35. Impact fees are required to be paid prior to
issuance of a building permit. More specific information about
impact fees and the amount to be paid for impact fees can be
found on the City's Website.
Tap Fees — A tap fee is a service fee that is charged for the
Water Department to install the service line from the public
water or wastewater main to the private plumbing. Tap fees only
apply to connections to existing mains. However, all new
connections incur both a tap and impact fee. More specific
information about tap fees and the amount required to be paid
for tap fees can be found on the City's Website.
o Tap fees are not required for service connections to new
mains constructed as part of the development.
Meter Deposits — New domestic and irrigation water taps also
require a meter deposit to be paid for billing purposes. Deposits
amounts are based upon meter size and customer class. More
specific information about meter deposits and the amount
required to be paid for meter deposits can be found on the City's
Website.
Water Testing Lab Fee — Prior to placing a newly constructed
water main in service, water sample testing is required by the
City. Testing of the water sample is conducted at a City
laboratory and a Water Testing Lab Fee must be paid by the
Developer in accordance with the City's Community Facilities
Agreements Ordinance. Fee only applies to testing of water
sample at the water laboratory. Fee does not include collection
of the water sample.
4.3.1.2 Water and Wastewater Main Charges
• Wastewater per Acre Charges
o Wastewater (sewer) per acre charges allow developers and
the City to recover some of the costs incurred associated
with the construction of wastewater main extensions.
Charges are based upon the demand required for the
development with its basin area in accordance with Division
3 — Sewer Per Acre Charges of City Code Chapter 35
• Water Main Capacity Charges
o Water main capacity charges allow developers and the City
to recover a portion of the cost incurred that are associated
PROCEDURE 50 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
with the construction of water mains. Charges are based on
1.0 million gallons per day (MGD) of maximum day
demand generated by a development in accordance with
Division 4 — Water Capacity Charges of City Code Chatter
35.
4.3.2 Front Foot Charges
4.3.2.1 Connections to an existing water, wastewater, or reclaimed water
main may be assessed a front foot charge in accordance with City
Code Chapter 35-58. Front foot charge amounts are subject to change
on an annual basis by City Ordinance. Front foot charges shall be paid
in the following cases:
• Service connections made to a main constructed by a developer
or single customer property owner before December 31, 1983;
• Service connections or extensions made to serve adjacent
property from a main constructed by a developer or single
customer property owner after December 31, 1983;
• Service connections or extensions made to vacant lots from a
water main that has been replaced at developer or single
customer property owner cost; or,
• Service connections or extensions made to vacant lots from a
main installed by multiple single customer property owners.
4.3.3 Assessment Taps — In cases where the City has paved a street that contains
water or wastewater mains and provided service taps to one or more unserved
lots, in order to prevent future pavement cuts, the City may charge an
additional fee for providing service to this lot in accordance with City Code
Chapter 35-57.7.
4.4 PRE -QUALIFICATION REQUIREMENTS FOR CONTRACTORS
4.4.1 Any project containing public infrastructure must be performed by a pre -
qualified contractor/sub-contractor in accordance the City requirements.
list of Water Department pre -qualified contractors is continually updated d
available from the Water Department.
4.4.1.1 If a contractor or sub -contractor is pre -qualified with the Water
Department, the General Conditions of the Project Manual must
include the City's Standard Construction Specification Documents,
General Conditions (or Developer Awarded Projects General
Conditions, as applicable) Section 00 45 12. This form includes lining
PROCEDURE 5 1 MAY 2019
I CiRT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
the applicable work type categories, name of the contractor/sub-
contractor, and the expiration date for their pre -qualification approval.
4.4.1.2 If a contractor or sub -contractor is not pre -qualified with the Water
Department, the contractor shall submit an application to be reviewed
for approval. Upon receipt of the pre -qualification application, the
Water Department Staff shall review the application for conformance
with the requirements and issue an approval or denial letter within 7
days. Pre -qualification work type categories and specific information
on the requirements to obtain pre -qualification are included in the
City's Standard Construction Specification Documents, General
Conditions (or Developer Awarded Projects General Conditions, as
applicable) Sections 00 45 11 and 00 45 13.
• General requirements for pre -qualification, further described in
City's Standard Construction Specification Documents, General
Conditions (or Developer Awarded Projects General Conditions,
as applicable) Sections 00 45 11 and 00 4513, include:
o Financial Statement;
o General Scope of Project Containing Public Water and/or
Wastewater Infrastructure;
o Work References;
o Equipment Schedule; and,
o Relevant Water and/or Wastewater Construction
Experience.
4.5 OTHER WATER/WASTEWATER FACILITIES
4.5.1 It is the intent of the Water Department to provide service by main
extensions. In the rare occasion that a main extension is not a feasible service
alternative for a development, the Water Department may require the
installation of booster pump stations, pressure regulating valves, lift stations,
and/or storage facilities to insure proper water/wastewater services are
provided to the development. However, the Water Department reserves the
right to require the developer to design and install these facilities as essential
components of the water/wastewater system necessary to serve the
development. Any cost participation for these improvements by the Water
Department will be in accordance with Section 3 (Policy) and coordinated
with the developer on a case -by -case basis.
PROCEDURE 52 MAY 2019
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"ICITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
4.6 ON -SITE SYSTEMS
4.6.1 Alternative systems, such as individual on -site water wells and on -site
sewerage facilities, shall be designed and operated in strict compliance w�th
all applicable permits, ordinances, regulatory guidance and regulations
including the Environmental Protection Agency (EPA), TCEQ, Texas
Department of State Health Services, County, and City.
4.6.1.1 All on -site sewage facilities shall be designed in accordance with .30
TAC Chapter 285 and approved by the appropriate permitting
authority. Use of holding tanks for temporary sewage disposal is rot
allowed.
4.6.1.2 Water wells must be drilled by a licensed well driller in accordance
with the Texas Occupations Code Chapter 1901.
4.7 PRE-TREATMENT
4.7.1 Commercial and industrial developments are subject to certain specific
requirements related to discharges into the wastewater system. These
requirements are set forth in City Code Chapter 12.5 — Environmental
Protection and Compliance.
4.8 BACKFLOW AND CROSS CONNECTION
4.8.1 Pursuant to 30 Texas Administrative Code (TAC), Section 290.44, it is the
responsibility of the City of Fort Worth to protects its drinking water supply
by instituting and enforcing a cross connection program. These requirements
are set forth in City Code Chapter 12.5 — Environmental Protection and
Compliance and Section 5.21 (Backflow Protection). The program includes
the installation of backflow prevention assemblies where deemed appropriate,
or necessary. In accordance with this requirement:
4.8.1.1 Annual testing is required for all commercial users.
4.8.1.2 All alternative water sources and contracted meters are required to
contain a backflow protection assembly.
4.8.1.3 Meters must be protected by a backflow assembly or air gap and t e
assembly must be tested upon installation.
• All newly installed, replaced, relocated, or removed backflow
assemblies for commercial, irrigation, and residential (when
applicable) services require initial testing to be performed by a
City approved Certified Backflow Prevention Assembly Tester.
4.8.1.4 More specific backflow information is included in the Backflow
Guidelines, Installation Standards & Specifications and can be
viewed on the City's Website.
PROCEDURE 53 MAY 2019
FOR` WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
SECTION 5 — DESIGN CRITERIA FOR WATER SYSTEMS
5.1 GENERAL
5.1.1 The following are the minimum Standard Design Criteria that must be met
for all water improvements to meet the requirements of 30 Texas
Administrative Code (TAQ Chapter 290, Sections 290.38 through 290.47, the
current edition of the City of Fort Worth Subdivision Ordinance, and the City
of Fort Worth Policy for the Installation of Community Facilities for
incorporation into the Fort Worth Water System.
5.2 PRESSURE PLANE AREAS
5.2.1 The City of Fort Worth distribution system is divided into several water
pressure planes to ensure even water pressure gradients throughout the City.
Prior to designing connection points between a proposed main and any
existing main, the Engineer shall investigate and determine if the proposed
water main crosses the boundary between any pressure planes. Even though
there are physical continuations of water pipes between pressure planes, they
are designed with valves that are closed at the boundary points so that each
pressure plane is isolated.
5.2.1.1 In addition, many pressure planes contain special service areas. These
areas could be susceptible to higher or lower pressures and are often
controlled through the use of pressure regulating valves.
Understanding the operation of these specialized service areas is
critical to ensuring proper water service to the area.
5.2.2 In certain conditions, pressure plane elevations may fluctuate depending upon
where development occurs within the pressure plane. Following is a listing of
standard pressure planes within the City. These pressure plane elevations may
be used for planning purposes. The Engineer can review more specific
information related to the pressure plane locations and boundaries by
contacting the Water Department Staff.
5.2.2.1 Holly Plane — The central area of the City, which is served from the
Holly Water Treatment Plants directly, without re -pumping, which
lies below ground elevation 640 feet. The water storage tank(s)
overflow elevation is 760 feet. The bottom of the water storage
tank(s) bowl elevation is 728 feet.
5.2.2.2 South Side II Plane — The area south and south west of the Holly
Plane between the ground elevations of 640 feet and 720 feet. The
water storage tank(s) overflow elevation is 850 feet. The bottom of
the water storage tank(s) bowl elevation is 815 feet.
DESIGN CRITERIA FOR WATER SYSTEMS 54 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.2.2.3 South Side III Plane — The area south and south west of the Southside
II Plane between the ground elevations of 720 feet and 860 feet. The
water storage tank(s) overflow elevation is 990 feet. The bottom of
the water storage tank(s) bowl elevation is 955 feet.
5.2.2.4 South Side IV Plane — The projected area south of the Southside I I
plane between the ground elevations 860 feet of 920 feet. The wat r
storage tank(s) overflow elevation is projected to be 1075 feet.
Currently, there is no bowl for this pressure plane.
5.2.2.5 West Side II Plane — The area west of the Holly Plane between ground
elevation 640 feet and 720 feet. The water storage tank(s) overflow is
857 feet. The bottom of the water storage tank(s) bowl elevation is
825 feet.
5.2.2.6 West Side III Plane — The area west of the West Side II Plane between
the ground elevations of 720 feet and 830 feet. The water storage
tank(s) overflow elevation is 974 feet. The bottom of the water
storage tank(s) bowl elevation is 924 feet.
5.2.2.7 West Side IV Plane — The area west of the West Side III Plane
between the ground elevations of 830 feet and 930 feet. The water
storage tank(s) overflow elevation is 1065 feet. The bottom of the
water storage tank(s) bowl elevation is 1022 feet.
5.2.2.8 West Side V Plane — The area west of the West Side IV Plane between
the ground elevations of 930 feet and 1060 feet. The water storage
tank(s) overflow elevation is 1190 feet. The bottom of the water
storage tank bowl elevation is 1155 feet.
5.2.2.9 Northside II Plane — The area north, northwest, and northeast of the
Holly Plane between ground elevations of 640 feet and 720 feet. Tie
water storage tank(s) overflow elevation is 853 feet. The bottom of
the water storage tank(s) bowl elevation is 797 feet.
5.2.2.10 Northside III Plane — The area north and northwest of the North Side
II Plane between the ground elevations of 720 feet and 820 feet. The
water storage tank(s) overflow elevation is 950 feet. The bottom of
the water storage tank(s) bowl elevation is 910 feet.
5.2.2.11 Northside IV Plane — The area north and northwest of the North Side
III Plane between the ground elevations of 820 feet and 920 feet. The
water storage tank(s) overflow elevation is 1030 feet. The bottom of
the water storage tank(s) bowl elevation is 990 feet.
5.2.2.12 East Side II Plane — The area east of the Holly Plane area between
ground elevation 640 feet and 680 feet. The water storage tank(s)
DESIGN CRITERIA FOR WATER SYSTEMS 55 NI AN' ?019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
overflow elevation is 805 feet. This plane also includes the area east
of IH-35 and north of Holly Plane. The bottom of the water storage
tank(s) bowl elevation is 770 feet.
5.3 MINIMUM WATER MAIN SIZE
5.3.1 Residential & Commercial Water Mains — The minimum water main size for
a residential (defined as single-family detached or two-family/duplex
housing) area or a commercial (defined as development not composed of
single-family detached or two-family/duplex housing and industrial
developments) area is 8-inch inside diameter (I.D.), or such larger size as
may be necessary to properly serve the proposed and existing development.
5.3.1.1 Upon approval of Water Department Staff, smaller residential
developments, such as cul-de-sacs, may be allowed in certain cases to
contain water mains less than 8-inch (I.D.) to help prevent water
quality issues. The minimum size allowed for these special
circumstances will be 4-inch water mains (with minimum 6-inch
valves).
5.3.2 Industrial Water Mains — The minimum water main size for an industrial
zoned area is recommended to be 12-inch (I.D.), or such larger size as may be
necessary to properly serve the proposed and existing development. 8-inch
(I.D.) water mains may be allowed in some situations, upon review and
approval of a Water Study. However, the maximum velocity allowed in
accordance with the Water and Sewer Study Guidelines is 10.0 feet per
second -(fps). In no case can water mains be allowed smaller than
recommended by the City's Fire Department.
5.4 SIZING WATER MAINS
5.4.1 Standard Sizes — New water mains shall consist of the following diameters
(in inches): 8, 12, 16, 24, 30, 36, and multiples of 6-inch thereon.
5.4.2 A Loading Analysis or Water Study shall be performed to determine the
demand/loads created by proposed development and if any necessary
improvements to the existing system to support the development are needed.
Water and Sewer Study Guidelines are included in the Appendix.
5.4.3 An alignment walk and/or study may be required if the water main is outside
of the existing public right-of-way.
5.4.3.1 All water mains 16-inch and larger in diameter will require an
alignment walk.
5.4.3.2 When special circumstances exist at the discretion of the Water
Department, an alignment walk may be required for 12-inch water
mains and smaller that are within the right-of-way.
DESIGN CRITERIA FOR WATER SYSTEMS 56 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.4.4 Water Demand Calculations and Modeling Criteria
5.4.4.1 Demand — The following demand criteria is in accordance with th�
Water Master Plan and Water and Sewer Study Guidelines:
• Average Day Water Use — Refer to Table 5-1 for average day
water demands for different land use types.
Table 5-1. Water Demands per Capita
Residential Average Non -Residential
Land Use Type Day per Capita Average Day per
(gpcd) Employee/Person/Student/Bed
(gpcd)
High Density Residential 180 -
Medium Density 180 -
Residential
Low Density Residential 180 -
Manufactured Housing 125
Single Family 200 -
Mixed Use Growth 180 I 50
Center
Commercial - 50
Heavy Industrial* t - 75
Light Industrial* - 50
Industrial Growth _ I 50
Center*
Hospitals - 350
Institutional/Schools - , 50
Institutional/Schools _ 40
without Showers
*Additional processes and maximum operating rate of water usage will need to be added to the water study
for proper pipe siting calculations.
• Maximum Day Water Use — For maximum day unrestricted use,
multiply the annual Average day by 2.25.
• Maximum Hour Water Use — For maximum hour unrestricted
use, multiply the maximum day by 2.00.
• Population Density for Study Purposes —When actual values gyre
unknown, use the following densities:
o Single Family— 14 persons per gross acre (based on
previous density assessment)
DESIGN CRITERIA FOR WATER SYSTEMS 57 NIAt 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o Commercial — 1 person per 400 square feet of structure for
non-residential use
o For mixed use land types, population density shall be
calculated for residential and non-residential buildings
separately.
• Persons per Residential Connection
o 3.5 people per connection for single-family residential
buildings
o 2.5 people per connection for multi -family buildings
• Computations
o Maximum Day/Connection — (2.25)(200 GPCD)(3.5 plc) _0.001575 MGD
1,000,000
o Maximum Hour/Connection=(2.00) (0.001575 MGD)=0.00315 MGD
5.4.4.2 Velocity and Head Loss
• For maximum hour demand condition, 12-inch and smaller
water mains shall be designed for a maximum velocity of 5 fps
and a maximum friction loss of 5 feet per 1,000 feet (ft/1,000-ft)
of water main length during 24 hours of extended period
simulation.
• For maximum hour demand condition, 16-inch and larger water
mains shall be designed for a maximum velocity of 7 fps and a
maximum friction loss of 7 ft/1,000-ft of water main length
during 24 hours of extended period simulation.
• For maximum day plus fire flow demand condition, water mains
shall be designed for a maximum velocity of 10 fps.
5.4.4.3 Fire Flow — Fire flow may be defined as the amount of water that
should be available for providing fire protection at selected locations
throughout a community. Fire flow rates vary depending on the land
use types per current Fire Code requirements. Texas Commission on
Environmental Quality (TCEQ) requires a minimum residual pressure
of 20 pounds per square inch (psi) be maintained while delivering fire
flow under maximum day demand conditions. Minimum fire flow
requirements are as follows:
• One and two-family dwellings and townhomes:
DESIGN CRITERIA FOR WATER SYSTEMS 53 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o 1,000 gallons per minute (gpm) in one and two-family
dwellings and townhomes for proposed dwellings smaller
than 3,600 square feet
o 1,500 gpm if dwelling's square footage is greater than 3,600
square feet
o The minimum fire flow duration is 1 hour.
• Other than one and two-family dwellings and townhomes:
o 1,500 gpm, or per current Fire Code requirements (contact
City of Fort Worth Fire Department for additional
information)
o The minimum fire flow duration should be 2 hours.
5.4.4.4 Supply Storage versus Pumping — The "Maximum Hour" demand
should be supplied with not less than 60% from pumping capacity and
not more than 40% from available elevated storage.
5.4.4.5 Elevated Storage Tank Depletion — Elevated water storage should
maintained not less than 5 feet above the storage tank's bottom
capacity level.
5.4.4.6 Minimum Working Pressure
• A minimum of 40 psi must be maintained at all times under
normal conditions.
• Plumbing Code allows a maximum pressure of 80 psi and a
pressure reducing valve (PRV) is required at connections where
the pressure exceeds 80 psi during any season.
5.4.4.7 Design — Water mains should be sized to meet "Maximum Hour" ur
"Maximum Day" plus Fire Flow, whichever is greater. Full
consideration shall be given to fire flow requirements as
superimposed upon the maximum day conditions, elevation, and the
type of development proposed, in arriving at the final water main
capacity.
5.4.4.8 Main Extensions for Wide Paved Streets — Wide paved streets
resulting in a copper service length of greater than 55 linear feet will
require a water main extension in accordance with Section 3 (Policy).
• The capacity of the two parallel water mains shall not be less
than the required capacity of a single line designed to serve the
area.
DESIGN CRITERIA FOR WATER SYSTEMS 519 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.5 TYPICAL LAYOUT OF WATER MAINS, SERVICE LINES, AND
APPURTENANCES WITHIN RIGHT-OF-WAY
5.5.1 Typical Locations — The following design criteria shall be considered to be
the normal locations for water mains, service lines, and appurtenances in the
Fort Worth Water distribution system:
5.5.1.1 Normal Residential Water Mains — The normal location of residential
water mains shall be in the north or east %4 of the street, as
appropriate.
• Other Street Types — Typical layouts for water mains within cul-
de-sacs and roundabouts are included in the Appendix.
• Streets Containing Large Storm Drain — For streets containing
greater than 36-inch storm drain, collaborative approval from the
Transportation/Public Works Department and Water Department
must be obtained for the water main to remain within the
pavement. If this cannot be achieved, the water main shall be
placed within the parkway 5 feet from the north or east property
line.
5.5.1.2 Residential Water Service Lines — The normal location of the
residential water service line shall be in the parkway in front of the
property and 1-foot offset from the property line.
Public or private service lines are not allowed to cross property
lines.
5.5.1.3 Meters — The normal location for domestic and irrigation water meter
boxes (with meters) is 2.5 feet behind the back of curb. In no case
shall the water meter box (and meter) be outside of the public right-
of-way or water easement.
5.5.1.4 Valves
• Valves should be located at all water main intersections and
should typically be located within the street intersection at water
main crosses or tees.
o Ring connections should be provided for water mains 16-
inch and larger instead of crosses in accordance with the
City's Standard Construction Details.
• Valve locations shall align with projected property line, unless
other locations are approved by the Water Department Staff.
DESIGN CRITERIA FOR WATER SYSTEMS 60 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o To provide proper valve restraint, large water mains
containing flanged connections require valves to be flanged
to the tee, or outlet fitting. r
o Valves shall not be located within curb ramps, or driveways.
• In -line valves, not located at intersections but required due to
spacing, should be placed before a fire hydrant lead line.
• For sizing and spacing of valves, refer to Section 5.13 (Gate
Valve and Butterfly Valve Requirements).
5.5.1.5 Fire Hydrants
• Fire hydrants should be placed at intersections, at least 2.5 fe ,-t,
but less than 9 feet, from the back of the curb of the paved st eet
or edge of a designated approved fire lane.
• Normal location is 3 feet behind the back of curb, but must avoid
placement within sidewalks, driveways, loading areas, etc.
Location for fire hydrants should be selected to provide shortest
possible lead under street pavement.
• For spacing and separations requirements, refer to Section 5.11
(Fire Hydrants).
• A standard blue raised reflective pavement marker shall be
placed on a highway, street, or road to mark fire hydrant
locations. In general, these makers should be placed 0.5 foot
from the centerline stripe, or approximate center of the pavement
where there is no centerline stripe, on the side nearest the fire
hydrant. Markers should be in accordance with Federal Highway
Administration Manual of Uniform Traffic Control Devices
Chapter 3A requirements.
5.5.1.6 Typical Layouts — Typical layouts for water and wastewater mains
and appurtenances are included in the Appendix.
5.6 HORIZONTALNERTICAL ALIGNMENT AND CLEARANCE
REQUIREMENTS
5.6.1 Radius of Curvature/Joint Deflection — Minimum radius of curve and
maximum deflection angle of pipe joints will be restricted to 50% of
manufacturer's recommendation, after which the use of horizontal or vertical
bends will be required. No bending of pipe is allowed.
5.6.2 Bends — All bends shall be 45' or less, where practicable. Two 45' bends #1 a
series should be used in lieu of 90' bends. Tee fittings should be used in liou
DESIGN CRITERIA FOR WATER SYSTEMS 61 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
of a 90' bend to allow for proper restraint for future maintenance or
connections.
5.6.3 Restrained .joints — All vertical and horizontal fittings and valves shall be
designed with restrained joints in addition to concrete thrust blocking.
Anchor tees or anchor couplings should be used to secure all branch valves to
fittings. Table 5-2 includes the minimum lengths of pipe to be restrained for
8-inch and 12-inch PVC water mains.
Table 5-2. PVC Pipe Joint Restraint
Pipe Size Plugs, Tees, and Bends*
(inches) Valves 900 450 22.50 11.250
8 88ft 33ft 14ft 7ft 4ft
12 126ft 45ft 19ft 9ft 5ft
*Length to be restrained on each side of the bend.
Assumptions: 250 psi test pressure, 1.5 safety factor, SP soil type, Type 4 trench
5.6.4 Depth of Cover Requirements
5.6.4.1 12-inch and smaller water mains shall be designed for a minimum
cover of 48 inches, measured from the top of surface (existing and
future) to the top of pipe.
5.6.4.2 16-inch and larger water mains shall be designed for a minimum
cover of 60 inches, measured from the top of surface (existing and
future) to the top of pipe.
0 To accommodate water main appurtenances requiring vaults,
depths exceeding 60 inches may be necessary.
5.6.5 Clearance Requirements
5.6.5.1 Other Water Mains within City Right -of -Way
0 If a 12-inch, or smaller, water main is proposed to be laid
parallel to an existing 12-inch, or smaller, water main, and a
horizontal clearance of 10 feet cannot be maintained as
measured from the outside diameter of each main, an alternate
alignment should be considered. If an alternate alignment is not
feasible, as agreed to by Water Department Staff, special
coordination and review will be required to be approved. In no
case shall the excavation of either main impact the bedding or
embedment of the other main.
a If a 16-inch, or larger, water main is proposed to be laid parallel
to an existing 16-inch, or larger, water main, and a horizontal
clearance of 20 feet cannot be maintained as measured from the
DESIGN CRITERIA FOR WATER SYSTEMS 62 MAY 2019
SORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
outside diameter of each main, an alternate alignment should be
considered. If an alternate alignment is not feasible, as agreed to
by Water Department Staff, special coordination and review will
be required to be approved. In no case shall the excavation of
either main impact the bedding or embedment of the other main.
5.6.5.2 Storm Drain
When water mains are parallel to storm drains, the minimum
horizontal clearance shall be 5 feet as measured from the outside
diameters of each main, or as required by the Transportation/
Public Works Department, whichever is greater.
When water mains cross storm drains, the water main should
cross over the storm drain with a minimum clearance of 2 feet as
measured from the outside diameters of each main.
o If the minimum clearance of 2 feet crossing over the storm
drain cannot be achieved, casing or an alternate alignment
may be required.
o If crossing over the storm drain cannot be achieved, the
water main should cross under the storm drain in accordance
with the City's Standard Construction Specifications and
Details.
5.6.5.3 Franchise Utilities — A minimum clearance of 3 feet horizontally and
vertically shall be maintained from all franchise utilities such as gas,
electric, fiber optic, and cable within City right-of-way. Proposed
franchise utilities shall cross beneath water mains. Where the
minimum clearance cannot be accommodated, less than minimum
clearance may be allowed at the discretion of Water Department Staff.
• Coordination with each utility is required to confirm clearance
requirements.
• The more stringent clearance requirements will be enforced.
5.6.5.4 Non -Franchise Utilities —Water mains proposed to parallel or cross
existing non -franchise utility lines, such as gas/energy pipelines, shall
adhere to the owner of the gas pipeline's clearance, and other,
requirements. At a minimum, water mains shall maintain a horizontal
clearance of 3 feet and vertical clearance of 3 feet, as measured from
the outside diameters of each main. However, if the non -franchise
utility contains an impressed current cathodic protection system, a
minimum horizontal clearance of 5 feet and vertical clearance of 3
feet is required as measured from the outside diameters of each main
DESIGN CRITERIA FOR WATER SYSTEMS (i? MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
to minimize the impacts of stray current to the main, fittings, and
appurtenances.
• Coordination with the non -franchise utility line owner is
required to confirm clearance requirements. The more stringent
clearance requirements will be enforced.
5.6.5.5 Drilled Shafts — Water mains adjacent to drilled shafts shall be
designed with a minimum horizontal clearance of 10 feet as measured
from the outside diameter (OD) of the main to the outside edge of the
drilled shaft.
5.6.5.6 Drainage Headwalls and Inlets
• Water mains shall not cross under headwalls and inlets.
• Water mains adjacent to headwalls and inlets shall be designed
with a minimum horizontal clearance of 10 feet to headwall and
5 feet to inlets as measured from the outside diameter of the
main to the outside edge of the headwall or inlet.
o In right-of-way sections where this clearance is not feasible,
an alternate alignment for the water main may be allowed at
the discretion of the Water Department Staff.
• Water mains perpendicular to headwalls and inlets shall be
designed with a minimum clearance of 10 feet to headwall and 5
feet to inlets as measured from the outside diameter of the main
to the outside edge of the headwall or inlet.
5.6.5.7 Mechanically Stabilized Earth (MSE) or Other Retaining Walls
• Water mains adjacent to MSE or other retaining walls shall be
designed to be placed outside of the zone of influence of the
wall, as determined by a Licensed Professional Engineer.
• Water mains crossing MSE or other retaining walls shall be
designed with steel casing through the entirety of the zone of
influence of the wall, as determined by a Licensed Professional
Engineer.
5.6.5.8 Other Bridge Features — Unless required otherwise by the bridge
owner, a minimum clearance of 5 feet horizontally and vertically shall
be maintained from all other bridge features.
5.6.5.9 Coordination with Other Entities — In situations where water mains
are required to be placed adjacent, within, or crossing easements or
right-of-way of highway or railroad entities, the Engineer is
DESIGN CRITERIA FOR WATER SYSTEMS 64 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
responsible for coordinating with such entity to confirm that futur-,
expansions from the entity will not impact the proposed water main.
Documentation of such correspondence should be provided for
review.
5.7 WATER MAIN SEPARATION FROM WASTEWATER MAINS
5.7.1 In accordance with TCEQ requirements, the purpose of maintaining minimal
spacing between water and wastewater mains is to protect the public water
distribution system from contamination from wastewater. Contamination may
occur when a vacuum develops within water main due to breakage or
malfunction of relief valve. The minimum horizontal space between a new
wastewater main and a water main shall be 9 feet measured from the outside
diameter of the water and wastewater mains or facilities. The wastewater
main that is parallel to a water main shall be installed in a separate trench.
When the 9-foot horizontal separation distance cannot be achieved, or if a
water main is crossing a wastewater main, the mains must meet separation
requirements set forth in 30 TAC Chapter 290.44.
5.8 WATER MAIN MATERIALS AND EMBEDMENT
5.8.1 Material and embedment requirements for water mains shall be as define d in
the City's Standard Construction Specifications and Details.
5.8.2 Trench Water Stops
5.8.2.1 If encountered during construction, or if groundwater is known to e
present, trench water stops should be installed at 500-foot interval Ito
prevent migration of water within the water main trench, unless
otherwise determined by the Engineer.
5.8.2.2 If a project is within the jurisdiction of the current City Code
Appendix A, Zoning Regulations, Chapter 6 Section 6.302 (Tree
Ordinance), all onsite underground utilities with backfill other than
onsite material shall have a trench water stop every 200 feet for the
entire length of the utility placement.
5.9 CONNECTIONS TO EXISTING WATER MAINS
5.9.1 Cut -in Tees — Connections are to be made in locations where existing valves
can be closed to isolate the connection point while keeping as much of the
surrounding system in service as possible. Cut -in tees are the preferred
method of connecting a new water main to an existing water main. If this
method is determined not to be feasible by the Water Department Staff, a
tapping sleeve and valve may be used.
5.9.1.1 Cut -in connections may require an additional valve on the existing
main to reduce the number of service disruptions.
DESIGN CRITERIA FOR WATER SYSTEMS 65 MAt' 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.9.1.2 For tapping sleeves, if allowed, the tap can only be connected to water
mains when the tap is at least one standard size smaller than the
existing main size. For example: 12-inch existing water main size and
8-inch tap and tapping valve size.
5.9.2 Provision for Future Extensions — Connections are to be designed to facilitate
future replacements and improvements. To accommodate future 12-inch or
smaller extensions and minimize future outages, the water main should
terminate with a gate valve and one joint 18-20 feet of water main. Water
mains 16-inch and larger will require a longer future stub -out or anchoring
restraint.
5.9.3 Shut -Down Periods for Large Mains — If a shut -down is required for a
connection or relocation to an existing main that is 24-inch in diameter, or
larger, the Engineer shall make provisions within the construction Contract
Documents (including drawings) to notify the contractor that connections to
mains will only be allowed from December 1- March 1, unless otherwise
approved by the Water Department Director. Prior to submittal of final plans,
the Engineer shall coordinate with Water Department Staff to discuss the
shut -down procedure and to determine if any additional requirements need to
be incorporated into the Contract Documents. Drawings shall also contain the
following notices for the contractor to adhere to during construction:
5.9.3.1 Contractor shall coordinate with Water Department Field Operations
at least 2 weeks before shut -down to discuss plan.
5.9.3.2 Contractor shall coordinate with Water Department Field Operations
at least 48 hours in advance of planned connection to discuss details
and sequencing procedure of the connection.
5.9.3.3 No shut -down will occur unless all required material and equipment
are on site.
5.10 DEAD END WATER MAINS
5.10.1 Dead-end mains shall be avoided and may only be considered when a looped
or interconnected water main system is not available. The design of all water
distribution systems should include the opportunity for future looping or
interconnect of any approved or proposed dead-end line.
5.10.2 Residential cul-de-sac dead-end lines may be allowed to be reduced down to
4-inch diameter, upon approval by the Water Department Staff.
5.10.2.1 The fire hydrant lead shall be installed prior to the reduction of the
main size.
5.10.2.2 The maximum length of a dead-end main in a cul-de-sac without a
fire hydrant is 250 feet.
DESIGN CRITERIA FOR WATER SYSTEMS 66 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.10.2.3 Future extensions from a 4-inch or 6-inch dead-end main will not !be
allowed.
5.10.3 Where dead-end mains are approved, the design shall allow for periodic
flushing of stagnant water through a flushing device in accordance with
Table 5-3.
Table 5-3. Flushing Requirements
Dead -End Length (feet)
Less than 100
100 - 300
More than 300
Flushing Requirement
Flush Point
Flush Point or Fire Hydrant
Fire Hydrant and Automatic Flushing Device
with Connection to Existing Wastewater
Main
5.10.3.1 The flushing requirements outlined above shall be provided unless
otherwise approved by the Water Department Director.
5.10.4 Pressure Plane boundaries shall be determined by the Water Department Staff
to meet operational requirements. Proposed mains that approach pressure
plane boundaries should be designed to loop within their designated pressure
plane.
5.10.5 To provide improved fire protection, water mains serving more than two fire
hydrants must be a looped system. Looped water mains through the site
should be connected to two different existing water mains to provide system
redundancy, unless otherwise approved by the Water Department Director.
5.11 FIRE HYDRANTS
5.11.1 Fire Hydrant Spacing and Separation — The following design criteria shall be
considered to be the normal locations for fire hydrants in the Fort Worth
distribution system. Fire Hydrant locations shall be in accordance with City
Code Chapter 13, Section 507.5.1 and reviewed by the Bureau of Fire
Prevention of the Fort Worth Fire Department.
5.11.1.1 One and Two -Family Residences — For all one and two-family
residences, fire hydrants must be installed within (or along) a 500-foot
radius along a direct horizontal line from residence and must be
within 600-feet hose lay using the most direct route of access between
fire hydrant and building.
5.11.1.2 Other Land Uses — For all other land uses, fire hydrants must be
installed within (or along) a 300-foot radius along a direct horizontal
line from building and must be within 500 feet hose lay using the
most direct route of access between fire hydrant and building.
DESIGN CRITERIA FOR WATER SYSTEMS 67 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.11.1.3 Cul-de-Sacs — Streets longer than 300 feet, which end in a cul-de-sac,
must have a fire hydrant in the cul-de-sac. When the cul-de-sac is less
than 300 feet from the center of the connecting street intersection, a
fire hydrant is required at the connecting street intersection.
5.11.1.4 Ground Elevation — The ground line on the fire hydrant in a standard
installation shall be set even with the elevation of the top of the
adjacent existing or proposed curb (elevation specified). When
parkways are to be developed with a rolling or irregular slope, the
ground line index on the fire hydrant shall be set to the proposed
ground elevation (specified) at the point of installation.
5.11.2 Private Fire Hydrants — Where the fire hydrant is on a metered line, fire
hydrant must be maintained by Owner and not obstructed. Paint in red color
to differentiate from public fire hydrant (aluminum color).
5.11.3 Fire Department Connection — Fire Department Connection shall be within
300 feet of a fire hydrant.
5.11.4 Fire Flow — Fire flow requirements shall comply with City Code Chapter 13,
Section B104, unless otherwise required or approved by the Fire Marshal.
5.11.4.1 Water supply, or fire hydrant flow, testing shall comply with City
Code Chapter 13, Section 507.4.
5.12 FIRE LINES
5.12.1 Main Connection Size — Fire lines can only be connected to water mains that
are one size larger, or more, than the fire line size.
5.12.2 Double Detector Check Valve Backflow Preventer— All fire lines are required
to have a double gate double detector check valve backflow preventer
assembly. The double detector check valve and vault is to be located on
private property in accordance with the requirements set forth in Section 5.21
(Backflow Protection).
5.12.3 Fire Department Connection — When a Fire Department Connection is
required, it must be located on the discharge (customer) side of the backflow
preventer.
5.12.4 Fire Line Testing — The Bureau of Fire Prevention of the Fort Worth Fire
Department is responsible for inspection and testing of all fire lines on owner
side of meter, gate valve, or backflow preventer.
5.12.5 Maximum Fire Line Length — The maximum length of fire lines is 100 feet
from the backflow preventer to the City water main, in accordance with
Section 5.21 (Backflow Protection). If the backflow preventer is located
within a vault, the vault shall be located adjacent to the right-of-way.
DESIGN CRITERIA FOR WATER SYSTEMS 68 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Deviations from this requirement require approval from the Water
Department Director through a variance request in accordance with Sectipn 9
(Variance Process).
5.12.6 Design and Construction Requirements for the Reconnection of Fire Line —
The following procedure should be utilized for the reconnection of fire 1' es
during design and construction of water mains:
5.12.6.1 All fire lines on existing water mains to be replaced shall be clearly
identified on the drawings and when necessary, detailed sequence of
construction should be provided for the reconnection to ensure that
affected properties have adequate fire protection during and after
construction. The Fort Worth Fire Department shall be notified of any
water supply impairments to a property's fire protection system(s).
The Fort Worth Fire Department may require a construction permit
depending on the nature or extent of the work.
5.12.6.2 The Engineer may need to visit with affected property owners to
obtain fire flow and pressure requirements and incorporate the data
into the fire service reconstruction design.
5.12.6.3 The Engineer must coordinate with Water Department Field
Operations during the design to coordinate design requirements. For
situations where the water main is removed and replaced in the same
trench, special attention should be given to maintaining adequate fire
protection. The transfer time of the fire line to the new water main
must be kept to a minimum.
5.12.6.4 Where necessary, design and appropriate pay items must be provided
for adequate temporary water service to feed fire service lines during
construction. If there is any question about the adequacy of the
temporary service to the fire line, then the inspector or project
manager will request field operations to perform a pressure test at the
nearest fire hydrant or outlet to determine the adequacy of the
temporary connection. If the temporary connection is inadequate to
provide fire protection until the permanent feed is in place, the project
manager will assess the situation and make a determination as to the
appropriate action.
5.12.6.5 The Engineer is responsible for locating and identifying fire services
to applicable buildings. The construction drawings should notify
contractors that it is their responsibility to maintain fire service to
such buildings. The proposed sequence of reconnection for fire lines
should be discussed at the pre -construction meeting and adhered to
during construction.
DESIGN CRITERIA FOR WATER SYSTEMS 69 NIAN 2019
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CITY OF FORT WORTH WATER'DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.12.6.6 The construction drawings should require contractor to coordinate
with the inspector to notify the Bureau of Fire Prevention and
property owners as early as possible, during construction, of the time
frame that the fire line will be impaired or shut down. Such
notification should be in written form, on company letter head, and
the City Inspector shall receive a copy. No fire line shut outs will be
allowed without this letter.
5.12.6.7 Fire Department Connection — When it is required that an immediate
water source be provided for a fire protection system, and upon
approval by the Fire Department, arrangements shall be made to
provide enough water pressure and flow to the system through an
alternate means, such as the Fire Department Connection. At the Fire
Department's request, calculations shall be submitted to show that fire
flow requirements for the specific hazard class are met.
5.12.6.8 Standpipe — When it is required that a standpipe be kept operational
from the Fire Department Connection, documents shall be submitted
to the Bureau of Fire Protection indicating that valves are in place and
configured to allow the system to be pumped at the Fire Department
connection without flowing back into the areas being repaired. This
may require a visual inspection by a Fire Inspector.
5.12.6.9 Fire Watch Requirements — When it is required that a fire watch be
provided, and upon approval by the Fire Marshal, provisions shall be
placed on the construction drawings to ensure continuous and
systematic surveillance of the building by one or more qualified
individuals for the purposes of identifying and controlling fire
hazards, detecting early signs of unwanted fire, raising an alarm of
fire and notifying the Fire Department. The individuals assigned to
fire watch duties shall have no other duty except as described above.
Each assigned person shall be an adult, be capable of communicating
verbally in English, and be provided with a method to communicate
with the Fire Department in the case of fire. There shall be enough
persons assigned to this duty so that all portions of the building may
be observed in a systematic manner at least once every 30 minutes, or
as required by the Fire Marshal. Any Fire Watch requires approval of
the Fire Marshal.
5.13 GATE VALVE AND BUTTERFLY VALVE REQUIREMENTS
5.13.1 Valve Spacing
5.13.1.1 Spacing between gate valves on a 16-inch or smaller water main
within a residential area shall be at least every 800 feet.
DESIGN CRITERIA FOR WATER SYSTEMS 70 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.13.1.2 Spacing between valves for water mains 16-inch and larger shall be at
least every 2,000 feet.
5.13.2 All valves shall be placed on a flat horizontal grade.
5.13.3 Valves on Fire Hydrants — All fire hydrants lead lines shall have a gate valve
(minimum 6-inch) and anchor tee.
5.13.4 Mains — All new water main connections (water services, mains etc.) shall
have an isolation valve at connections to an existing or proposed water main.
5.13.4.1 A gate valve must be placed after the last service installed on the
water main.
5.13.5 Gate Valves — Unless approved otherwise by the Water Department Staff,
gate valves shall be used for water mains 24-inch and smaller.
5.13.5.1 Vaults for 16-inch Valves & Larger — All valves that are 16-inch, or
larger, shall be installed in a valve vault in accordance with the City's
Standard Construction Specifications and Details.
5.13.5.2 Minimum Gate Valve Size — The minimum size of gate valve allowed
is 6 inches. Any valves needed for 4-inch or smaller connections
should be increased with a 6-inch reducer fitting and 6-inch gate
valve.
5.13.6 Gate Valve Orientation — All gate valves shall be installed in the vertical
direction. No horizontal orientations will be allowed. Gate valves must be
placed perpendicular to the existing/proposed ground elevation and shall
open in the clockwise direction.
5.13.7 Butterfly Valves — All valves installed on water mains 30-inch and larger in
diameter shall be butterfly valves contained within a vault in accordance with
the City's Standard Construction Specifications and Details.
5.13.8 Existing Isolation Valves for Connections and Sequencing — Existing gate
valves shall be located on the construction drawings to allow isolation of
specific section of the distribution system to prevent shutting off more than
once, services those customers who are served by water lines outside. Usually
this will be a water main under a street between two cross streets.
5.14 CLEANING PIGS AND WYES
5.14.1 In strategic locations along water mains, cleaning wyes shall be provided for
passing cleaning pigs through.the water line to sweep trash, dirt and debris
from the pipe. Cleaning wyes shall be supplemented with chlorination and
sampling points, as required for disinfecting of the water main.
DESIGN CRITERIA FOR WATER SYSTEMS '71 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.14.1.1 Locations for insertion of cleaning pigs and clean -out wyes shall be
located on the construction drawings and in accordance with the
City's Standard Construction Specifications and Details. The Water
Department Staff will review the cleaning pig insertion locations and
clean -out wyes on the drawings.
5.14.1.2 Water mains containing butterfly valves will require alternate
methods for cleaning such as closed-circuit television video (CCTV)
or physical inspection.
5.15 COMBINATION AIR VALVE ASSEMBLIES
5.15.1 In accordance with American Water Works Association (AWWA) standards
and manuals of practice, combination air release/vacuum valves shall be
installed in locations such to exhaust trapped air from the water distribution
system. These locations include, but are not limited to, high points, the
downstream side of mainline valves, increased downslopes or decreased
upslopes, long ascents or descents, and the beginning and end of horizontal
runs. Refer to AWWA M51 for suggested locations for combination air
release/vacuum valves. Table 5-4 includes general sizes of combination air
valve assemblies but shall be verified by the Engineer.
Table 5-4. Combination Air Valve Assemblies
Water Main Size
16-inch and smaller
24-inch to 30-inch
36-inch
42-inch
48-inch
54-inch and larger
Size of Relief Valve
2-inch
4-inch
6-inch
6-inch
8-inch
8-inch
Type of Relief Valve
Combination
Combination
Combination
Combination
Combination
Combination
5.15.1.1 A smaller size release/vacuum valve may be used if calculations
sealed by an Engineer are provided to demonstrate that the smaller
valve size is sufficient.
5.15.1.2 Combination release/vacuum valves shall be installed in vaults in
accordance with the City's Standard Construction Specifications and
Details.
5.16 BLOW -OFF ASSEMBLIES
5.16.1 Blow -off valves and vaults are required in the system to drain the mains and
shall be placed at low points along transmission mains (16-inch and larger).
Blow -off assembly valve sizes are shown in Table 5-5.
DESIGN CRITERIA FOR WATER SYSTEMS 72 MAY 2019
FORT WORTH
5.17
5.18
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Table 5-5. Blow -off Valve Size
Water Main Size Size of Blow -off Valve
16-inch
24-inch and larger
6-inch
8-inch
PRIVATE PRESSURE REDUCING VALVES
5.17.1 In low areas where pressures may exceed 80 psi, construction drawings
should contain provisions for individual pressure reducing devices to be
installed in accordance with the current Plumbing Code adopted by the CIt
y
of Fort Worth.
SERVICE LINE AND WATER METER REQUIREMENTS
5.18.1 Service Lines
5.18.1.1 No horizontal bending or splicing of service lines is allowed.
5.18.1.2 Service lines shall be aligned straight and perpendicular to the main
and should avoid conflicts with existing/proposed utilities, including
street lighting.
5.18.1.3 When in the opinion of the Water Department Staff, the integrity of
the water service lines may be jeopardized due to proximity of other
utilities, structures, etc., the service line will be required to be placed
within casing or sleeve.
5.18.1.4 Location within cul-de-sacs — Services within cul-de-sacs shall be
placed perpendicular to the main, unless otherwise directed by Water
Department Staff. A typical layout for water mains and service lines
within a cul-de-sac is included in the Appendix.
5.18.1.5 Staggering of Services — When providing service to both sides of the
street, service lines shall be staggered a minimum of 12 inches.
5.18.1.6 Service Lines for Wide Paved Streets — Wide paved streets resulting in
a service length of greater than 55 linear feet will require a parallel
main system (water main extension) in accordance with Section 3
(Policy).
5.18.1.7 Service Lines for Fire Lines — When a structure requires a fire line for
service, a separate service line is required from the main with separate
backflow devices. In no case can a 2-inch or smaller domestic service
line and meter be combined with a fire line service.
DESIGN CRITERIA FOR WATER SYSTEMS 73
MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.18.2 Residential Water Meters and Service Lines — The minimum size residential
water service line for new residential development shall be 1-inch. A
residential meter may be either % -inch or 1-inch.
5.18.2.1
A 1-inch water service with two 3/4-inch meters (commonly called a
bullhead connection) can be installed for residential duplex lots or for
contiguous single-family residential lots having a front footage of 40
feet or less. The meter boxes can only be installed in non -paved areas.
Irrigation meters are not allowed for bullhead installations unless
the service tap and line size is increased.
5.18.3 Meters Larger than 2-inches in Size — Water meters that are larger than 2-
inches
in size shall contain the following design criteria:
5.18.3.1
Meter Vault — Meter shall be installed in a vault in accordance with
City of Fort Worth Standard Construction Specifications and Details.
5.18.3.2
Bypass — All meters larger than 2 inches shall have a bypass in
accordance with City of Fort Worth Standard Construction
Specifications and Details.
5.18.3.3
Type of Meter — All meters larger than 2-inch shall be a combination
meter in accordance with City of Fort Worth Standard Construction
Specifications and Details
5.18.3.4
Purchase — All meters shall be purchased from the Water Department.
5.18.3.5
Service Line Size — 3-inch and 4-inch meters shall contain a minimum
service line size of 4-inches.
5.18.4 Service Connections from Existing Lines
5.18.4.1 Domestic water service taps shall be off a looped water main, when
available.
5.18.4.2 Domestic water service taps shall not be shared, split or bullheaded
with an irrigation tap.
5.18.5 Sub -metering Requirements
5.18.5.1 Owners shall comply with private sub -metering requirements
established by Plumbing Code and TCEQ Requirements.
5.18.5.2 Water service to multi -unit facilities; including condominiums,
apartments, manufactured home rental community and multiple use
facilities, will be provided through a master meter, if construction is
on one lot.
DESIGN CRITERIA FOR WATER SYSTEMS 74 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• Sub -meters and plumbing after the master meter will be inst�lled
and maintained at the customers' expense.
• Sub -meters must conform to current AWWA Standards C700.
• Master meters will be furnished by the Water Department and
paid for by the customer.
5.18.6 Maximum Number of Meters per Lot — The number of domestic meters
allowed on one lot shall not exceed 4.
5.19 WATER SAMPLE STATIONS
5.19.1 Water sample stations are required to meet compliance regulatory
requirements. These stations may be required to be installed at the request of
the City at locations such as: major intersections, water transmission main
tees/crosses, large water meters, schools, fire stations, or other locations to be
designated by the Water Department.
5.20 CATHODIC PROTECTION
5.20.1 If materials other than PVC are proposed for City water mains, a Cathodi
Protection Study should be performed by a corrosion specialist. In
accordance with recommendations from the Cathodic Protection Study,
Construction Drawings and Specifications should include provisions for
Cathodic Protection in accordance with the City of Fort Worth Standard
Construction Specifications and Details
5.21 BACKFLOW PROTECTION
5.21.1 As a condition of water service, all customers shall install, maintain, and
operate their piping and plumbing systems in accordance with the current
City adopted Plumbing Code and City Code Chapter 12.5 (Environmental
Protection and Compliance). Service connections shall have a back -flow
prevention device to protect the public water system from cross
contamination in accordance the most restrictive requirements set forth by
City Code and the City's Backflow Guidelines, Installation Standards &
Specifications.
5.21.2 Circumstances Requiring Use of Backflow — At a minimum, a backflow
prevention assembly will be required in each of the following circumstances:
5.21.2.1 When the nature and extent of any activity at a premise, or the
materials used in connection with any activity at a premise, or
materials stored at a premise, could contaminate or pollute the potable
water supply.
5.21.2.2 When a premise has one or more cross connections.
DESIGN CRITERIA FOR WATER SYSTEMS 75 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.21.2.3 When internal cross connections are present that are not correctable.
5.21.2.4 When intricate plumbing arrangements are present that make it
impractical to ascertain whether cross connections exist.
5.21.2.5 When a premise has a repeated history of cross connections being
established or re-established.
5.21.2.6 When entry to a premise is unduly restricted so that inspections for
cross connections cannot be made with sufficient frequency to assure
that cross connections do not exist.
5.21.2.7 When materials are being used such that, if backflow should occur, a
health hazard could result.
5.21.2.8 When installation of an approved backflow prevention assembly is
deemed by an Inspector to be necessary to accomplish the purpose of
these regulations.
5.21.2.9 When an appropriate cross connection survey report form has not
been led with the Water Department Director.
5.21.2.10 When a fire sprinkler system using non -potable piping material is
connected to the City's water system.
5.21.2.11 In all new nonresidential construction there shall be installed an
approved backflow assembly at the service connection (outside of
City right-of-way or easement). The type of the assembly will be
commensurate with the degree of hazard as determined by the
inspector.
5.21.2.12 When a building is constructed on commercial premises, and the end
use of such building is not determined or could change, a reduced
pressure principle backflow prevention assembly shall be installed at
the service connection (outside of City right-of-way or easement) to
provide protection of the public water supply in the event of the most
hazardous use of the building.
5.21.2.13 If a premise is required to have backflow prevention assemblies, but
water cannot be turned off during the testing of such assemblies, the
premises shall be equipped with dual backflow prevention assemblies
of the same type so that testing, repair and maintenance can be
performed.
5.21.2.14 Any used water return system that has received approval from the
Water Department Director.
5.21.2.15 If a point -of -use assembly has not been tested or repaired as required
by this Division, a premise isolation assembly shall be required.
DESIGN CRITERIA FOR WATER SYSTEMS 76 MAY 2019
FORT FORTH
_.."*44�.
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.21.2.16 If a Backflow or Plumbing Inspector determines that additions or
rearrangements have been made to the plumbing system without the
proper permits as required by the Plumbing Code, premise isolation
shall be required.
5.21.2.17 All multistory buildings or any building with a booster pump or
elevated storage tank.
5.21.2.18 Retrofitting shall be required on all health hazard connections and
wherever else the Water Department Director deems retrofitting
necessary.
5.21.2.19 Any premises requiring multiple service connections for adequacy of
supply and/or requiring protection shall have a backflow assembly on
each service connection (outside of City right-of-way or easement).
The assembly shall be commensurate with the degree of potential
hazard that could occur in the event of an interconnect between any of
the buildings on the premises.
5.21.3 Location Requirements — Backflow preventer approval must be obtained
from the City of Fort Worth Water Department, Cross Connection Section,
prior to installation.
5.21.3.1 In the interest of protecting public health, any service that remains in
a static condition from the property line to an ending point exceeding
100 linear feet requires installation of an approved backflow
prevention device installed within said footage.
5.21.3.2 To install the Backflow Assembly inside the building, the distance
from tap to assembly shall not be over 100 feet, unless otherwise
approved by the Water Department Director. Branch lines from tap at
the main to assembly are not allowed.
5.21.3.3 For unmetered, dedicated fire lines over 100 feet from tap to
assembly, the assembly shall be installed in an approved vault, or
above ground (type of assembly) at property line. Install to meet City
testing procedures. Locate the assembly on private property, not in an
easement or right of way.
5.21.3.4 All installations shall be horizontal unless approved by the Water
Department Director. To be installed in the vertical position, the
assembly has to:
• Be approved by University of Southern California Foundation
for Cross -Connection Control and Hydraulic Research
(USCFCCCHR) for vertical installation.
• Contain spring loaded checks.
DESIGN CRITERIA FOR WATER SYSTEMS 77 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• Be installed in the up -flow position.
• Be approved by the appropriate authority within the City.
o Fire Line backflow approval and permitting is through
Water Department's Backflow Division.
o All other backflow approvals and permitting is through the
City's building permit process.
5.21.4 Backflow Prevention for Fire Lines
5.21.4.1 Refer to Table 5-6 for the required types of backflow prevention for
fire lines.
Table 5-6. Backflow Prevention for Fire Lines
Fire Line Type
Backflow Protection
Fire line with no
chemical additive
Double Check Detector Assembly
and no additional
water supply
Fire line with fire
hydrant with no
chemical additive
Double Check Detector Assembly
and no additional
water supply
Fire line with
Air Gap Separation or Reduced
chemical additive
Pressure Principle Assembly
Fire protection
system with access
Air Gap Separation or Reduce
to an auxiliary
Pressure Principle Assembly
water supply
Fire line connected
to metered domestic
Double Check Valve Assembly
lines
5.21.4.2 Systems with only a single chemical loop, e.g., anti -freeze loop, foam,
etc., may install the backflow protection on the loop, however, an
expansion chamber will be recommended to be installed to
compensate for thermal expansion.
5.21.4.3 Systems containing more than one loop must provide backflow
protection for the entire system.
5.21.4.4 Existing chemical loops and systems with access to an auxiliary water
supply shall be retrofitted with approved backflow protection.
5.21.4.5 Existing Fire Lines
DESIGN CRITERIA FOR WATER SYSTEMS 78 MAY 2019
FORT FORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Retrofitting existing fire lines is required if there is a chemical
additive used, or if there is alternate water tied into system. This
is a HIGH HAZARD RETROFIT.
• Retrofitting low hazard existing fire line is not required unle$s
size of main is changed or replaced to accommodate pressur�
loss for additional sprinkler heads.
5.21.4.6 Testing Requirements for Fire Lines
• Backflow prevention for fire lines is permitted and tested
through the Water Department.
• New Fire Lines — Coordinate with Water Department Backflow
Division for specific testing requirements.
• Existing Fire Lines — Coordinate with Water Department Field
Operations to schedule valve crew and associated testing.
• Backflow assemblies shall meet testing specifications for
distance from wall to floor in accordance with the City Standard
Construction Specifications and Details for backflow
prevention.
• Backflow assemblies inside buildings, more than 5 feet abovv.
floor level, shall have an approved permanent platform for
testing and maintenance
5.21.5 Backflow Preventive Approval — Backflow preventer approval must be
obtained from the Water Department, Cross Connection Division, prior to
installation. The installation shall conform to the Backflow Guidelines,
Installation Standards & Specifications.
5.21.6 Installation Requirements — Backflow prevention assemblies shall be
installed in accordance with the Plumbing Code and City Code. The assembly
installer shall obtain the required plumbing permits prior to installation and
shall have the assembly inspected by a certified cross connection inspector
and as required by the Plumbing Code.
5.21.6.1 No part of a reduced pressure principle backflow prevention assembly
(RP) shall be submerged in water or installed in a location subject to
flooding. All assemblies installed below grade shall have non-ferrous
threaded plugs inserted in the test ports.
5.21.6.2 Assemblies shall be installed at the point of delivery of the water
supply, before any branch in the line, and on private property located
just inside the boundary of the City's right-of-way. An Inspector y
DESIGN CRITERIA FOR WATER SYSTEMS 79 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
specify other areas for installation of the assembly. The assembly
shall be protected from freezing and other severe weather conditions.
5.21.6.3 All vertical installations shall be approved, in writing, prior to
installation and all vertical installations must be of an assembly
approved by the USCFCCCHR.
5.21.6.4 The assembly shall be readily accessible with adequate room for
maintenance and testing. Assemblies 2 inches and smaller shall have
at least a 6-inch clearance on all sides of the assembly. All assemblies
larger than 2 inches shall have a minimum clearance of 12 inches on
the back side, 24 inches on the test cock side, 12 inches below the
assembly and 36 inches above the assembly.
5.21.6.5 If the Water Department Director grants written permission to install
the backflow assembly inside of a building, the assembly shall be
readily accessible between 8:00 a.m. and 5:00 p.m., Monday through
Friday.
5.21.6.6 If an assembly is installed pursuant to City Code Chapter 12.5-531,
subsection (a)(8), and is 4 inches or larger and is installed 5 feet or
higher above the floor, it shall be equipped with a rigidly and
permanently installed scaffolding acceptable to the Water Department
Director. This installation shall also meet all applicable requirements
set out by the U.S. Occupational Safety and Health Administration
and the State of Texas occupational safety and health laws.
5.21.6.7 Reduced pressure principle assemblies may be installed in a vault
only if relief valve discharge can be drained to daylight through a
bore sight type drain. The drain shall be of adequate capacity to carry
the full rated flow of the assembly and shall be screened on both ends.
5.21.6.8 An approved air gap shall be located at the relief valve orifice of RP
assemblies. This air gap shall be at least twice the inside diameter of
the incoming supply line as measured vertically above the top rim of
the drain and in no case less than 1-inch.
5.21.6.9 All assemblies installed in a vault that is 5 feet from finish floor to top
of lid must have a permanently installed ladder.
5.21.6.10 Vaults must have BILCO type J, JD or equivalent. Vaults in high
traffic areas must have BILCO type HLC, or equivalent
5.21.7 For further information related to the requirements for Backflow Prevention,
refer to the Back, low Guidelines, Installation Standards & Specifications
included in the Appendix.
DESIGN CRITERIA FOR WATER SYSTEMS s0 MAY 2019
FORT NORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
5.22 ABANDONMENT OF WATER MAINS AND APPURTENANCES
5.22.1 Water mains shall be abandoned by removal if the proposed main is within
the same trench as the existing main.
5.22.1.1 All other water mains shall be abandoned by draining the existing
main, cutting and filling the existing main with grout, and plugging in
accordance with the City of Fort Worth Standard Construction
Specifications and Details
5.22.2 Water main appurtenances shall be removed and salvaged in accordance the
City of Fort Worth Standard Construction Specifications and Details.
5.22.3 Concrete Water Vaults
5.22.3.1 In accordance City of Fort Worth Standard Construction
Specifications and Details, abandonment for concrete vaults is as
follows:
• Remove and salvage vault lid, valves, and meters;
• Remove and dispose of piping and other appurtenances; and/or,
• Demolish and remove entire concrete vault and backfill, unless
determined by the Water Department Staff to be unfeasible.
o Should the vault demolition and removal be determined by
the Water Department Staff to be unfeasible, the vault may
be abandoned by removing the top 3 feet of vault and filling
the vault with acceptable material in accordance with City of
Fort Worth Standard Construction Specifications and
Details.
5.23 SPECIAL REQUIREMENTS FOR CRITICAL FACILITIES
5.23.1 Critical Facilities require the following additional provisions:
5.23.1.1 Meters and Services
• A minimum of 2 domestic and fire services shall be provided O
provide for redundant operation of the entire facility.
o Each domestic/fire service shall be located on separate
water mains.
• Domestic and fire services line shall be separate service with
separate taps from the water main.
o Combined service lines are not allowed.
DESIGN CRITERIA FOR WATER SYSTEMS 81 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• Meters should be located at perimeter locations of the
development and should be located within private property or
vacated streets.
o Meters cannot be located within a street or within a building
with limited access such as a basement, tunnel, garage, etc.
5.23.1.2 Isolation Valves
• Valve should be added as necessary to allow for service from 2
directions.
• Services proposed to be placed on existing water mains should
include sufficient isolation at each intersection.
o Cut -in valves will be required to achieve proper service
from 2 directions if valve spacing exceeds 1,000 feet.
5.23.1.3 Distribution Lines
Water lines should be looped to ensure water quality, reliability,
and capacity. Service are not allowed from dead-end water
mains.
Developments proposed adjacent to any existing cast iron water
main may require replacement in accordance with Section 3
(Policy).
5.24 CROSSINGS
5.24.1 Texas Department of Transportation (TxDOT) Highway Crossings
5.24.1.1 The design of water mains within a state highway must be in
compliance with all applicable TxDOT requirements, unless a
variance is approved by TXDOT. The following reference applies: 43
TAC, Part 1, Chapter 21, Subchapter C — Utilities Accommodation.
5.24.1.2 Water mains shall be located to avoid'or minimize the impact to
future highway projects and improvements, to allow other utilities in
the right-of-way, and to permit access to water mains and other utility
facilities for their maintenance with minimum interference to highway
traffic.
5.24.1.3 New water mains crossing a highway shall be installed at
approximately 90' to the centerline of the highway.
5.24.1.4 New water mains located longitudinally along a highway shall be
designed parallel to and outside of the right-of-way in a separate
easement.
DESIGN CRITERIA FOR WATER SYSTEMS 82 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• Any water main proposed to be located longitudinally within
state highway right-of-way requires approval from the Water
Department Director.
5.24.1.5 All water crossings shall be cased with steel casing pipe, in
accordance with City of Fort Worth Standard Construction
Specifications and Details. Limits of casing pipe shall be in
accordance with 43 TAC, Part 1, Chapter 21, Subchapter C — Utilities
Accommodation.
5.24.1.6 Water valves and other appurtenances shall not be placed in the
pavement or shoulder of highway.
5.24.1.7 Water main crossings shall include a valve on each side of the
highway crossing.
5.24.1.8 Individual service meters shall be placed outside the limits of the
right-of-way within an easement.
5.24.1.9 The Engineer shall be responsible for preparing draft permits with all
required drawings and attachments to the City. Drawings must be
signed and sealed by Licensed Professional Engineer in the State of
Texas. All drawings and attachments must be provided to the City in
electronic format. The City will submit the permit to TxDOT.
5.24.2 Railroad Crossings
5.24.2.1 The design of water mains within railroad right-of-way must be in
compliance with the requirements of the appropriate railroad
authority. The engineer should determine which railroad company
right-of-way is being crossed and obtain their utility accommodation
policies prior to beginning the design. These include, but are not
limited to, insurance and licensing agreement requirements.
5.24.2.2 License Agreement — Construction of mains cannot occur until a
permit or license agreement has been executed.
5.24.2.3 Transverse Crossing —New mains crossing the railroad shall be
installed at approximately 90' to the centerline of the railroad, if
possible.
5.24.2.4 Longitudinal/Encroachment Alignment - New water mains located
longitudinally along railroad right-of-way shall be designed parallel to
and outside of the right-of-way within a separate easement.
• Any water main proposed to be located longitudinally within
railroad right-of-way requires approval from the Water
Department Director.
DESIGN CRITERIA FOR WATER SYSTEMS 83 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Longitudinal installation, if allowed shall be located on uniform
alignments to and outside of the right-of-way line within an
easement to provide space for future railroad construction and
possible future utility installation.
All new mains shall be located on top of back slope at the outer
limits of railroad property.
• If main is located 40 feet or less from centerline of track, the
mains shall be encased in a steel pipe as approved by the railroad
authority under jurisdiction. No main may be placed within 25
feet from the centerline of the track, or in accordance with
railroad requirements, whichever is greater.
5.24.2.5 All mains crossing under railway track shall be placed in a casing
pipe, unless otherwise approved by railroad authority. Casing pipe
crossing railroad tracks shall be designed to withstand E80 railroad
loadings in accordance with City Standard Construction
Specifications and Details and shall extend to the right-of-way lines.
5.24.2.6
Water valves, manholes, meters and other appurtenances shall be
placed outside the limits of the right-of-way.
5.24.2.7
Water main crossings shall include a valve on each side of the
railroad crossing.
5.24.2.8
The Engineer shall be responsible for preparing draft permits with all
required drawings and attachments to the City. Drawings must be
signed and sealed by Licensed Professional Engineer in the State of
Texas. All drawings and attachments must be provided to the City in
electronic format. The City will submit the permit to Railroad. Any
application costs/fees associated with the railroad permit will be the
responsibility of the Engineer.
5.24.3 Creek, River, or other Water Feature Crossings
5.24.3.1
Creek, river, or other water feature crossings are required to meet
jurisdictional determination and permitting requirements in
accordance with the United States Army Corps of Engineers and other
regulatory agencies.
5.24.3.2
Main crossings of existing, or proposed, detention or retention ponds
are not allowed.
5.24.3.3 Pursuant to 30 TAC Chapter 290.44(0(2), where water mains are laid
under any flowing stream or semi -permanent body of water, such as a
marsh or pond, the water main shall be installed in a separate
watertight casing pipe or installed with valves on each side of the
DESIGN CRITERIA FOR WATER SYSTEMS 84 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
crossing to allow the isolation and testing of that portion of the wTer
main to determine if there are any leaks.
5.24.3.4 A primary consideration in the design of creek, river, or other water
feature crossings is the prevention of soil erosion at the areas of
trench backfill. As a minimum, cement stabilized backfill shall be
used from top of bank to top of bank in accordance with the City's
Standard Construction Specifications and Details. Erosion control
measures are also subject to review by the City's
Transportation/Public Works Department.
• If velocities of the flowing water exceed 10 fps, the cement
stabilized backfill shall be covered with riprap and/or stone -
filled caged baskets from top of bank to top of bank.
• In areas where there is a planned channel improvement, the
stabilized backfill shall be used up to the line of planned
improvement. The area above this planned line of improvement
shall be compacted fill.
• All mains must be designed with a minimum clearance from Jhe
top of the pipe to the bottom of the channel of 5 feet, or 1.5
multiplied by the outside diameter of the pipe, whichever is
greater.
5.24.4 Trenchless Construction
5.24.4.1 Construction by other than open cut are methods used for water main
installation under restrictive conditions when open cut construction is
not allowed. Only straight pipe alignments for both horizontal and
vertical alignment are allowed.
5.24.4.2 Auger Boring
Engineers should consider the location, size and depth of born
and receiving pits when choosing the beginning and ending
stations for boring. A bore pit typically exceeds 20 feet in length
to accommodate one joint of pipe. Bore pit width varies
depending on the depth and size of pipe, with the narrowest
width approximately 5-7 feet. The design engineer is responsible
for determining the appropriate bore pit size for the installation.
Auger Boring shall be designed in accordance with the City's
Standard Construction Specifications and Details. The
anticipated size and location for all bore pits should be included
in the design for the main and shown on the drawings.
DESIGN CRITERIA FOR WATER SYSTEMS 85 MAY 2019
FORT WORTH
"'-"Oor� CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Launching pits shall be located at the lower elevation end of the
tunnel.
5.24.4.3 Other Trenchless Construction — When traditional auger boring is not
feasible for the construction of the improvements, other trenchless
methods of construction shall be designed by the Engineer in
accordance with City's Standard Construction Specifications and
Details. Any designs not meeting these requirements, such as, but not
limited to, micro -tunneling, open shield pipe jacking, and horizontal
directional drilling, will require submittal of design and technical
specifications for an additional review by the Water Department Staff.
5.24.5 Elevated Crossings
5.24.5.1 Elevated crossings for water mains should be avoided. Elevated
crossings create special design problems in which no set of
circumstances is duplicated from one design to another. Two methods
of elevated crossings acceptable for consideration by the engineer are:
• Hanging the water main on a roadway bridge; or,
Designing a specific utility bridge for the support of the water
main crossing.
5.24.5.2 The following basic criteria must be addressed by the engineer for all
elevated crossing:
• Prior to proceeding with design for attaching a main to abridge,
documentation of correspondence approving the placement of
the main on the bridge should be provided to the Water
Department.
• Provisions for thrust restraints at the points of transition from a
buried conduit to an elevated conduit and for all elevated
changes of alignments and fittings.
• Water main must be fully restrained at changes in alignment and
at fittings, as necessary.
• Increased loading effects on the bridge created by a full main
and its supports.
• Access to main and appurtenances for maintenance purposes.
• Coatings or methods of corrosion control for elevated pipe
sections and pipe supports.
DESIGN CRITERIA FOR WATER SYSTEMS 86 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• PVC pipe is not to be used for any exposed sections of elevated
crossing because of the deterioration caused by the ultraviolet
rays present in direct sunlight.
• Evaluate the freeze potential of small diameter or low flow
mains.
• To ensure positive restraint in all directions, each joint of pipr is
to have 2 support straps. Spacing of pipe supports is to be In
accordance with the length of pipe joints specified and one of the
supports should be placed near the bell end of the pipe.
• Air relief provisions are required where high points are created
in the main.
• A minimum of one expansion joint fitting is recommended for a
water main crossing on a roadway bridge. Placement of the
expansion joints should coincide with the expansion joints of the
road way bridge.
• Water main crossings shall include a valve on each side of thb
elevated crossing.
• Proposed elevation of the main shall meet low chord bridge
requirements and be 2 feet above the 100-year water surface
elevation to prevent damage to the main.
5.25 PAVEMENT REPAIR
5.25.1 Mains designed to be placed within existing pavement shall contain
provisions for pavement repair in accordance with the City's Street Cut
Policy as well as the Standard Construction Specifications and Details.
DESIGN CRITERIA FOR WATER SYSTEMS 87 MAY 2019
FORT WORTN
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
SECTION 6 — DESIGN CRITERIA FOR WASTEWATER MAINS
6.1 GENERAL
6.1.1 The following are the minimum standard Design Criteria that must be met for
all wastewater main improvements in order to meet the requirements of 30
Texas Administrative Code (TAC) Chapter 217, Sections 217.1 through
217.3, the current edition of the City of Fort Worth Subdivision Ordinance,
and the City of Fort Worth Policy for the Installation of Community
Facilities, also to be approved for incorporation into the Fort Worth
Wastewater Collection System.
6.2 MINIMUM WASTEWATER MAIN SIZE
6.2.1 The minimum size for any public gravity wastewater collection main shall be
8-inch.
6.3 SIZING WASTEWATER MAINS
6.3.1 Standard Sizes — New wastewater mains shall consist of the following
diameters (in inches): 8, 10, 12, 15, 18, 21, 24, 27, 30 and multiples of 6
inches thereon.
6.3.2 Wastewater mains must obtain a minimum cleansing velocity of 2 feet per
second (fps) with maximum design flows. Wastewater mains maximum
velocity shall not exceed 10 fps.
6.3.3 In accordance with Texas Commission on Environmental Quality (TCEQ)
requirements, the maximum design flow velocity shall be determined using
the "Manning's Equation" with a minimum "n" value (Roughness
Coefficient) of 0.013. Refer to Table 6-1 for minimum and maximum slopes
allowed for wastewater mains.
Table 6-1. Minimum and Maximum Slopes
Main Size (Inches) I Minimum Slope (%) Maximum Slope (%)
8
0.40
8.40*
10
0.29
6.23 *
12
0.22
4.88*
15
0.16
3.62*
18
0.12
2.83 *
21
0.095*
2.30*
24
0.08*
1.93*
27
0.07*
1.65*
30
0.06*
1.43*
36
0.045*
1.12*
Larger than 36
See Section 6.3.1)
*Minimum/maximum requirements
per 30 TAC Chapter 217
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 88 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.3.3.1 The "n" value must take into consideration the slime, grit, and grease
layers that will affect hydraulics or hinder flow as a pipe ages.
6.3.4 For mains larger than 36 inches in diameter (I.D.), the slope may be
determined by the Manning's equation to maintain a minimum of 2 fps when
flowing full and maximum velocity less than 10 fps when flowing full.
1.49
V = ( n )(Rh.67)(So.,)
Where: V = velocity (feet/second)
n = Manning's roughness coefficient (n = 0.013)
Rh = hydraulic radius (feet)
S = slope (feet/feet)
6.3.5 Determination of Wastewater Flows — A Loading Analysis or Sewer Study
shall be performed to determine the demand/loads created by proposed
development and if any necessary improvements to the existing system to
support the development are needed. Water and Sewer Study Guidelines are
included in the Appendix.
6.3.6 An alignment walk with Water Department Staff and/or study may be
required if the wastewater main is outside of the public right-of-way.
Wastewater mains 15 inches and larger in diameter and wastewater force
mains transitioning to gravity mains will require an alignment walk.
6.3.6.1 A conceptual layout should be provided to Water Department Staff
for review prior to scheduling the alignment walk.
6.3.7 Wastewater Demand Calculations and Modeling Criteria
6.3.7.1 Single -Family Residential Demand — Refer to Table 6-2 for average
day wastewater loading. If the density is unknown, a population
density of 14 persons per gross acre shall be used to calculate the
cumulative population load at each point of load increment to
determine the load on each section below that point using:
6.3.7.2 Average Day Wastewater Flow for Other Land Uses — Refer to Table
6-2 for average day wastewater load for different land use types.
6.3.7.3 Computation Example:
Single -Family Residential Buildings
o Average load per person in GPM = 100/1440 = 0.0694
GPM
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 89 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o Average load of a given population in GPM = (0.0694
GPM) x (population) = (load in GPM)
Table 6-2. Wastewater Load per Capita
Residential Non -Residential
Average Average Day per
Land Use Type Day per Employee/Person/Student
Capita
(gpcd) (gpcd)
High Density 85 -
Residential
Medium Density 85 -
Residential
Low Density ( 85 -
Residential
Manufactured 90 -
Housing
Single Family 100 -
Mixed Use Growth 85 35
Center
Commercial I - I 35
Heavy Industrial - 50
Light Industrial - 35
Institutional - 35
Junior and High
School (with showers - 20
and cafeteria)
Elementary School
(with cafeteria and no - 15
showers)
Restaurant - 10 gallons/meal
Restaurant (with bar I -
and cocktail lounge) 12 gallons/meal
Hospitals - 315
6.3.7.4 Peak Daily Flow (PDF)
• Each wastewater main shall be sized with a peaking factor to
appropriately handle infiltration and inflow. The peaking factor
shall be evaluated by the Engineer from known metering and
flow data for the particular basin or area under design. In
absence of actual peaking flow, Table 6-3 can be used to
determine the minimum peaking flow.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 90 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Table 6-3. Wastewater Peaking Factor
Pipe Size Peaking Factor Depth of Flow
30-inch or less Harmon's Formula Full
36-inch or larger 2.5 or Harmon's Formula; whichever is Full
greater
• Harmon's Formula — Ratio of Design Load (peak daily flow) to
Average Load (average daily flow) is expressed by:
14
M=1+
4+ P
Where: M = Ratio of Design Load to Average Load
P = Population in Thousand
• Procedure for Design Flow Calculation — Using the cumulative
population at each load point based on residential and
employment density, calculate the cumulative population load at
each point of load increment to determine the load on each
section below that point using:
o Step 1:
■ Average load per person per day equal to 100 gallons
for single-family buildings.
■ Average load per employee/person/student is 35 gallons
per day for non-residential buildings.
o Step 2:
■ Average load per person in GPM = 100/1440=0.0694
GPM
■ Average load per employee/person/student in GPM =
35/1440 = 0.0243 GPM
o Step 3: Average load of a given population (in GPM) =
(0.0694 GPM x population) + (0.0243 GPM x employment)
= (load in GPM)
o Step 4: Total Design Load = PDF x the average load
generated by the ultimate population to be served by the
main being designed
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 91 NIAt, 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o Special Considerations for Infiltration Load - The Water
Department has found through study that an infiltration load
must be considered for use on projects serving large areas
developed using clay pipes. An allowance of 1.5 times the
total design load will be used in order to provide for excess
infiltration in such areas.
6.4 TYPICAL LAYOUT OF WASTEWATER MAINS, SERVICE LINES, AND
APPURTENANCES WITHIN RIGHT-OF-WAY
6.4.1 Typical Locations — The following design criteria shall be considered to be
the normal locations for wastewater mains, service lines, and appurtenances
in the Fort Worth wastewater system
6.4.1.1 Normal Residential Wastewater Mains — The normal location of the
wastewater main shall be in the south or west 1/4 of the street, as
appropriate.
6.4.1.2 Wastewater Mains on Wide Paved Streets — A proposed wastewater
service main that requires crossing over more than 55 linear feet
(perpendicular to street center line) of street pavement (either existing
or proposed) is not permitted and will require a wastewater main
extension in accordance with Section 3 (Policy).
For situations where a main extension is impractical due to grade
limitations or corridor/installation constraints, a Variance
Request may be submitted for Water Department Director
approval in accordance with Section 9 (Variance Process)
6.4.1.3 Residential Wastewater Service Lines — The normal location for a
wastewater service line shall be at the center of the lot frontage.
• Wastewater service lines should maintain a minimum horizontal
separation of 9 feet from water service lines as measured from
the outside diameters of each service line.
Wastewater services should avoid placement in driveways. If the
normal location places the service in the driveway, the service
line should be designed to placed south or west of the proposed
driveway location.
Where the grade of the wastewater main serving the lot is 3% or
more, the wastewater service line shall be located 5 feet
upstream from the lower lot front corner.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 92 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• For wastewater mains serving each side of the street, service
lines should be staggered such that a distance of 24 inches
separates the centerlines of each service tap.
6.4.1.4 Manholes — Manholes shall be placed at all points of change in
alignment, grade, size, material, or inside diameter of the wastewater
main. In addition, manholes shall be placed at an intersection of 2 or
more wastewater mains, at the end of the main in accordance with
Section 3 (Policy), and any locations required to provide accessibility
for maintenance.
6.4.1.5 Typical Layouts — Typical layouts for water and wastewater mains
and appurtenances are included in the Appendix.
6.5 HORIZONTALNERTICAL ALIGNMENT AND CLEARANCE
REQUIREMENTS
6.5.1 General Horizontal Requirements:
6.5.1.1 Wastewater mains shall be laid straight between manholes.
No horizontal or vertical bends or curved alignments are allowed
between manholes.
6.5.1.2 Wastewater mains shall not be installed parallel within the floodway.
6.5.1.3 Wastewater mains shall not be installed within the top of bank of a
creek, river, channel, or other water feature.
6.5.2 Depth of Cover Requirements
6.5.2.1 Wastewater mains should be laid with the top of the pipe at a
minimum of 42 inches below the surface of the ground, or future
ground, whichever is greater. The standard depth of cover is 72
inches. Wastewater mains laid with less than 42 inches of cover, as
measured from the top of pipe to the surface, require approval from
the Water Department Director.
Where the topography requires that a wastewater main be
installed with less than 42 inches of cover, upon approval from
the Water Department Director, the main shall be encased in
1,500 psi concrete and constructed of ductile iron pipe through
the restricted area. Encasement requirements for wastewater
mains shall be as defined in the City's Standard Construction
Specifications and Details.
6.5.3 Deep Mains — Wastewater mains exceeding 15 feet of cover from the top f
the main to the surface require specialized backfill and embedment
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 93 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
requirements in accordance with the City's Standard Construction
Specifi, cations and Details.
6.5.3.1 4-inch wastewater service line connections are not permitted to
wastewater mains exceeding 15 feet of cover. An extension of a
horizontally parallel wastewater main is required for wastewater
service line connections in this case in accordance with Section 3
(Policy). Vertically stacked mains are not allowed.
Exceptions — In certain cases such as creek crossings, where
mains are required to be deep to achieve proper clearance from
the flowline of the crossing, parallel main extensions may not be
required for service installations. This will be evaluated on a
case -by -case basis by request of a variance in accordance with
Section 9 (Variance Process).
6.5.4 Clearance Requirements
6.5.4.1 Other Wastewater Mains
If a wastewater main is required to be laid parallel to an existing
wastewater main, a minimum horizontal clearance of 4 feet shall
be maintained as measured from the outside diameter of each
main. In no case shall the excavation of either main impact the
bedding or embedment of the other main. The Engineer is
responsible for determining proper clearance between mains
based upon soil conditions. Trench boxes, hydraulic shoring, or
other means may be necessary to achieve 4 feet, or more,
clearance.
6.5.4.2 Storm Drain
When wastewater mains are parallel to.storm drains, the
minimum horizontal clearance shall be 5 feet as measured from
the outside diameters of each main, or as allowed by the
Transportation/Public Works Department, whichever is greater.
When wastewater mains cross storm drains, the wastewater main
should cross the storm drain with a minimum clearance of 2 feet
as measured from the outside diameters of each main
o Concrete Stabilized Sand (CSS) or Controlled Low Strength
Material (CLSM) backfill is required for any storm drain
crossings.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 94 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o If the minimum clearance of 2 feet crossing the storm drain
cannot be achieved, casing, bridging structures, or other
special engineered structural design may be required.
o At the discretion of Water Department Staff, crossings
beneath large storm drains or box culverts may require steel
casing.
o In no cases will wastewater mains to be permitted to cross
through storm drains or storm drain junction structures.
6.5.4.3 Franchise Utilities — A minimum horizontal and vertical clearance of
3 feet, as measured from outside diameter of the main to the outside
diameter of the franchise utility, shall be maintained from all
franchise utilities such as gas, electric, fiber optic, and cable.
Proposed franchise utilities shall cross beneath wastewater mains.
Where the minimum clearance cannot be accommodated, less than
minimum clearance may be allowed at the discretion of Water
Department Staff.
• Coordination with each utility is required to confirm clearance
requirements.
• The more stringent clearance requirements will be enforced.
6.5.4.4 Non -Franchise Utilities —Wastewater mains proposed to parallel or
cross existing non -franchise utility lines, such as gas/energy pipelines,
shall adhere to the owner of the gas pipeline's clearance, and other,
requirements. At a minimum, wastewater mains shall maintain a
horizontal clearance of 3 feet and vertical clearance of 3 feet, as
measured from the outside diameters of each main. However, if the
non -franchise utility contains an impressed current cathodic
protection system, a minimum horizontal clearance of 5 feet and
vertical clearance of 3 feet is required as measured from the outside
diameters of each main to minimize the impacts of stray current to the
main, fittings, and appurtenances.
• Coordination with the non -franchise utility line owner is
required to confirm clearance requirements. The more stringent
clearance requirements will be enforced.
6.5.4.5 Drilled Shafts — Wastewater mains adjacent to drilled shafts shall be
designed with a minimum horizontal clearance of 10 feet as measured
from the outside diameter of the main to the outside edge of the
drilled shaft.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 95 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.5.4.6 Drainage Headwalls and Inlets
• Wastewater mains shall not cross under headwalls and inlets.
• Wastewater mains adjacent to headwalls and inlets shall be
designed with a minimum horizontal clearance of 10 feet to
headwall and 5 feet to inlets as measured from the outside
diameter of the main to the outside edge of the headwall or inlet.
o In right-of-way sections where this clearance is not feasible,
an alternate alignment for the wastewater main may be
allowed at the discretion of the Water Department Staff.
• Wastewater mains perpendicular to headwalls and inlets shall be
designed with a minimum clearance of 10 feet to headwall and 5
feet to inlets as measured from the outside diameter of the main
to the outside edge of the headwall or inlet.
6.5.4.7 Mechanically Stabilized Earth (MSE) or Other Retaining Walls
• Wastewater mains adjacent to MSE or other retaining walls shall
be designed to be placed outside of the zone of influence of the
wall, as determined by a Licensed Professional Engineer.
• Wastewater mains crossing MSE or other retaining walls, shall
be designed with steel casing through the entirety of the zone of
influence of the wall, as determined by a Licensed Professional
Engineer.
6.5.4.8 Other Bridge Features — A minimum clearance of 5 feet horizontally
and vertically shall be maintained from all other bridge features,
unless required to be greater as regulated by the bridge owner.
6.5.4.9 Coordination with Other Entities — In situations where wastewater
mains are required to be placed adjacent, within, or crossing
easements or right-of-way of highway or railroad entities, the Design
Engineer is responsible for coordinating with such entity to confirm
that future expansions from the entity will not impact the proposed
wastewater main. Documentation of such correspondence should be
provided for review.
6.6 WASTEWATER MAIN SEPARATION FROM WATER MAINS
6.6.1 In accordance with TCEQ requirements, the purpose of maintaining minimal
spacing between water and wastewater mains is to protect the public water
distribution system from contamination from wastewater. Contamination may
occur when a vacuum develops within water main due to breakage or
malfunction of relief valve. The minimum horizontal space between a new
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 96 MAY 2019
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FORT
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
wastewater main and a water main shall be 9 feet measured from the outside
diameter of the water and wastewater mains or facilities. Wherever possible,
a wastewater collection system pipe must be located below a water supply
pipe. In addition, any wastewater main that is parallel to a water main shall
be installed in a separate trench. When the 9-foot horizontal separation
distance cannot be achieved, or if a wastewater main is crossing a water
main, the mains must meet separation requirements set forth in 30 TAC
Chapter 217.53.
6.7 WASTEWATER MAIN MATERIALS AND EMBEDMENT
6.7.1 Material and embedment requirements shall be as defined in the City's
Standard Construction Specifications and Details.
6.7.2 Trench Water Stops
6.7.2.1 Groundwater — If encountered during construction or if groundwater
is known to be present, trench water stops should be installed at 500-
foot intervals to prevent migration of water within the water main
trench, unless otherwise determined by the Engineer.
6.7.2.2 Other Requirements — Trench water stops are required for wastewater
mains when the following conditions are present:
Slopes exceeding 3%
o Trench water stops should be placed before each manhole
and at 200 feet intervals.
• Downstream of any storm drain or water main crossing.
6.7.2.3 Tree Ordinance — If a project is within the jurisdiction of the current
City Code Appendix A, Zoning Regulations, Chapter 6 Section 6.302
(Tree Ordinance), all onsite underground utilities with backfill other
than onsite material shall have a trench water stop every 200 feet for
the entire length of the utility placement
6.8 CONNECTIONS TO EXISTING WASTEWATER MAINS
6.8.1 In accordance with TCEQ requirements, when connecting a proposed main to
an existing main at a manhole, the preferred connection should have the
elevation of the outfall main level with the top inside elevation of the
proposed main.
6.8.2 Manholes are required at service line connections meeting any of the
following conditions:
6.8.2.1 6-inch, or larger, service lines
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 97 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• Manholes for 4-inch service lines require prior approval by the
Water Department Staff.
6.8.2.2 In situations when the slope of a service line on public or private
property is 5%, or greater. If multiple adjacent service lines result in
this scenario, an alternate solution will need to be developed and
discussed for consideration by the Water Department Staff.
6.8.3 Drop Manholes — When connecting a wastewater lateral to an existing
manhole with an invert elevation more than 24 inches lower, the connection
must use a lined, exterior drop and must meet the requirements set forth in
the City's Standard Construction Specifications and Details.
6.8.4 Hydraulic Slides — When connecting a wastewater lateral to an existing
manhole with a manhole invert elevation 24 inches, or less, than the lateral, a
hydraulic slide is required in accordance with the City's Standard
Construction Specifications and Details.
6.8.5 Flowlines of Wastewater Mains at Change in Diameter — In manholes when a
smaller diameter main is flowing into a larger main, the tops of pipes shall be
placed at the same elevation (soffit to soffit).
6.9 MANHOLES
6.9.1 Manholes shall be placed at all points of change in alignment, grade, size,
material, or inside diameter of the wastewater main. In addition, manholes
shall be placed at an intersection of two or more wastewater mains, at the end
of the main in accordance with Section 3 (Policy), and any locations required
to provide accessibility for maintenance.
6.9.2 Distance Between Manholes
6.9.2.1 Refer to Table 6-4 for the maximum distance between wastewater
manholes on mains.
Table 6-4. Maximum Distance Between Manholes
Size of Wastewater Main Distance Between Manholes (feet)
15-inch and smaller 500
18-inch to 30-inch 800
36-inch to 48-inch 1,000
54-inch and larger 2,000
6.9.3 Manhole Sizes and Types
6.9.3.1 The inside diameter of a manhole must not be less than 48 inches. The
minimum manhole diameter shall be as required in Table 6-5.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 98 MAY 2019
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\� CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Table 6-5. Minimum Manhole Diameter
Size of Wastewater Main Minimum Manhole Diameter (feet) i
21-inch and smaller 4
24-inch to 36-inch 5
Larger than 36-inch 6
6.9.3.2 Standard Manholes shall be specified on the drawings unless
conditions warrant another manhole type.
• Type A Manholes — Type A manholes are required for
wastewater mains 36-inch, and larger.
• Shallow Manholes — All manholes that have a depth of 48
inches, or less, as measured from the surface to the manhole
invert, shall be installed with a shallow manhole in accordance
with the City's Standard Construction Specifications and
Details.
o Upon approval by Water Department Staff, wastewater
access chambers may only be considered at the end of the
main when shallow wastewater main conditions exist within
narrow corridors, such as an alley, and within non -traffic
areas. The Water Department will determine whether a
wastewater access chamber can be used.
6.9.4 Manhole Flowlines
6.9.4.1 Manholes shall be designed with a 0.10-foot drop from the inlet
elevation to the outlet elevation for any flow direction changes
exceeding 60 degrees.
6.9.4.2 Flowline elevation differences of 24-inches, or less, a hydraulic sli,ie
is required in accordance with the City's Standard Construction
Specifications and Details.
6.9.5 Corrosion Prevention
6.9.5.1 Manholes are required to be lined in accordance with the City's
Standard Construction Specifications and Details when any of the
following conditions exist:
• Manholes on wastewater mains 15 inches and larger in diameter;
• Manholes transitioning from force mains to gravity mains;
• Drop Manholes;
• Manholes constructed with a hydraulic slide;
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 99 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• Manholes with entering or exiting wastewater main slopes of
3%, or greater; or,
• Manholes connecting wastewater mains exceeding 15 feet of
cover from the top of the main to the surface.
6.9.6 Wastewater Manholes in the Flood Plain — In accordance with TCEQ
requirements, wastewater main manholes located in the 100-year flood plan
shall include manhole covers and rings with watertight gaskets or other
means to prevent inflow.
6.9.6.1 Where gasketed, watertight manholes are required for more than 3
manholes in a sequence, a venting method, such as raising the rim a
minimum of 2 feet (maximum 5 feet) above the 100-year flood plain,
shall be provided on every third manhole.
If this cannot be accommodated, an alternate venting method to
minimize inflow, shall be proposed for review by the Water
Department Staff.
6.9.7 Manhole at End of a Main — In accordance with 30 TA Chapter 217.55, all
wastewater mains that may be extended at a future date shall end (highest
point) with a manhole, main stub -out of one joint of pipe or less, and plug
shall be blocked with concrete.
6.9.8 Concrete Collars
6.9.8.1 All wastewater main manholes within asphalt pavement, unpaved
alleys, or other load bearing areas, shall have a concrete collar to
secure manhole frame.
Manholes located in concrete paved areas within the street will
not require concrete collars but must be sawcut in accordance
with the City's Standard Construction Specifications and
Details.
6.10 SPECIAL REQUIREMENTS FOR WASTEWATER SERVICE LINES
6.10.1 The design of wastewater service lines follows the same basic design
procedures as those outlined for mains, except, of course, that the information
required is reduced in complexity to conform to the reduced function of a
lateral. No change in material is allowed along the length of a wastewater
service line.
6.10.2 All service lines shall connect to a wastewater main at a 90-degree angle. 6-
inch and larger wastewater service lines shall connect to a manhole on the
wastewater main at a 90-degree angle.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 100 MAY 2019
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CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.10.3 Slope of Wastewater Service — In accordance with plumbing code
requirements, the minimum slope for 4-inch service lines is 2% on private
property, and the minimum slope for 6-inch and larger service lines is 1 % on
private property.
6.10.4 Length of Wastewater Service Line — Wastewater service lines shall be
extended from the main to the property line when the service is installed, in
accordance with City Standard Construction Specifications and Details, and
shall not exceed a length from main to cleanout of 55 feet, in accordance with
Section 3 (Policy).
6.10.5 Wastewater Service Line Depth of Cover — Wastewater service lines shall be
installed with a minimum depth of cover of 36-inches as measured from the
top of the service line to the surface.
6.10.5.1 When allowed by Water Department Staff, any installations requiring
a depth of cover less than 36-inches must be installed with cement
stabilized sand backfill in accordance with City Standard
Construction Specifications and Details.
6.10.6 Wastewater Service Lines Crossing Water Main/Storm Drain — When a
wastewater service line crosses a water main or storm drain (long side
services), the service line shall be green in color and meet SDR-26
requirements, including pressure rated joints. Cement stabilized backfill shall
be specified on the drawings.
6.10.6.1 The clearance shall be 2 feet as measured from the outside diameter
of the service line to the outside diameter of the storm drain or water
line.
When the minimum clearance cannot be achieved, the design
should include casing the services line with ductile iron pipe
sufficiently beyond the limits of the crossing.
6.10.7 Each lot must contain its own wastewater service line. Public and private
service lines are not allowed to cross any existing, proposed, or future lot
line(s).
6.10.8 Wastewater service lines cannot be directly connected to wastewater main
larger than 15 inches. An extension of a parallel main is required in
accordance with Section 3 (Policy).
6.11 CLEANOUTS
6.11.1 Cleanouts may not be used except at the end of a wastewater service line.
6.11.2 Cleanouts must contain a concrete collar and be constructed in accordance
with the City's Standard Construction Specifications and Details.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 101 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.11.3 6-inch and larger service lines require a manhole at the property line.
6.11.3.1 If there is not sufficient space to meet this requirement, a variance
request can be submitted for an alternate installation method for
review in accordance with Section 9 (Variance Process).
6.12 CLOSED CIRCUIT TELEVISION VIDEO (CCTV)
6.12.1 Post -CCTV is required for all wastewater main and service line construction
projects and should be included as a bid item in the construction documents.
Pre -CCTV is required for all rehabilitation or relocation wastewater main
projects, as well as some grading projects, and should be included as a bid
item in the construction documents. All CCTV is required to be performed in
accordance with the City's Standard Construction Specifications and Details.
In accordance with the specifications, paving or pavement repair may not be
allowed to commence without approval of CCTV submittals.
6.13 INVERTED SIPHONS
6.13.1 Inverted siphons should be avoided and shall only be considered where
avoidance or adjustment of the obstructing utility or structure is not practical.
An inverted siphon can be designed to a portion of a wastewater main which
dips below the hydraulic grade line to avoid any obstructions including, but
not limited to a drainage structure, utility, tunnel or stream. When allowed by
the Water Department Staff, siphons shall be designed in accordance
requirements of 30 TAC Chapter 217.53., and the following additional
requirements:
6.13.1.1 Provide permanent access to all structures for maintenance of
facilities.
Junction structures/manholes shall have adequate access for
cleaning with a flushing truck.
6.13.1.2 Stop logs are required for each barrel on the upstream side and shall
be specified as part of the design as approved by the Water
Department.
6.13.1.3 Any barrels that are open cut shall be embedded with controlled low
strength material in accordance with the City's Standard Construction
Specifications and Details.
6.13.1.4 All structures should be lined with an approved lining system in
accordance with the City's Standard Construction Specifications and
Details.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 102 MAY 2019
FORT W4�RT_H, CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.13.1.5 Design for structures shall include a submittal of buoyancy
calculations to ensure the prevention of floatation of the wall and
floor sections during at a 100-year water surface elevation.
6.13.1.6 Construction drawings and specifications should include provisions to
restore and protect the entire easement area and any other disturbed
areas with slope stabilization such as erosion control blankets, rip rap,
gabion mattress, and/or gabion baskets in accordance with the City's
Standard Construction Specifications and Details.
6.14 ODOR CONTROL UNIT
6.14.1 The Water Department may require the installation of odor control units q
force mains, lift stations, inverted siphons, drop manholes, or 24-inch (and
larger) diameter gravity mains. Odor control units must be designed in
accordance with requirements as determined by the Water Department and be
compatible with existing odor control units within the City.
6.15 PRE-TREATMENT
6.15.1 Pre-treatment facilities should be designed and installed in accordance with
the City of Fort Worth Guidance Document for Sizing and Installation of
Grease Traps and Interceptors.
6.16 ON -SITE SEWAGE FACILITIES
6.16.1 If allowed in accordance with Section 3 (Policy), all On -Site Sewage
Facilities (OSSF) shall be designed strictly in accordance with 30 TAC
Chapter 285: On -Site Sewage Facilities as approved by the appropriate
permitting authority on a case -by -case basis.
6.17 WASTEWATER LIFT STATIONS AND FORCE MAINS
6.17.1 It is the intent of the Water Department to provide wastewater service by
main extensions. In the rare occasion that a wastewater main extension is not
a feasible service alternative, the Water Department Director may require
design and construction of a lift station and force main to serve a
development. Lift stations and force mains are often discouraged due to their
higher risk of causing a wastewater overflow and increased maintenance
costs. If service by a gravity wastewater main is not feasible upon agreement
by the Water Department Director, lift stations and force mains shall be
designed with the criteria described in the following sections.
6.17.2 Preliminary Engineering Report
6.17.2.1 The design engineer shall submit Preliminary Engineering Report
prepared by Licensed Professional Engineer in the state of Texas for
the proposed lift station force main in accordance with this section
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 10, MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
and the requirements of 30 TAC Chapter 217.59: Lift Station
Requirements. The Preliminary Engineering Report shall consist of,
as a minimum, the following components:
• Introduction and Justification for Proposed Lift Station;
• Site Location, Property Dedication, and Access;
• Wastewater Flow Analysis;
• Force Main System Curves and Pump Curves;
• Downstream Wastewater Main Capacity Available;
• Electrical Power and Reliability; and,
• Site Specific Issues.
6.17.3 Drawings and Specifications
6.17.3.1 Upon submittal and approval of the Preliminary Engineering Report,
prepare construction drawings and specifications for review by the
Water Department.
• All drawings, including civil, mechanical, electrical, and
instrumentation shall be signed and sealed by Licensed
Professional Engineer in the State of Texas.
6.17.4 General Lift Station Design Requirements
6.17.4.1 General Design — Standard lift station consisting of wet well with
submersible pumps.
6.17.4.2 Regulatory Requirements — Lift station design and construction shall
comply with federal and state requirements, including current 30 TAC
Chapter 217.59: Lift Station Requirements and the Texas Department
of Licensing and Regulation.
6.17.5 Civil Design Criteria
6.17.5.1 Wastewater Flow Projections
• Calculate projected wastewater inflow to a lift station using the
procedure outlined Water and Sewer Study Guidelines included
in the Appendix. The wastewater inflow calculations, shall
contain, as a minimum, the following:
o Total acreage in lift station watershed and total acreage
proposed to be served by the lift station;
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 104 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o total population and acreage of existing developments to be
served by lift station;
o total population, proposed land uses, and acreage of
developments to be served by lift station;
o Harmon's peaking factor; and,
o average day and maximum day inflows to lift station.
Lift Station Design Pumping Capacity — The firm (largest pump
out -of -service) pumping capacity of the lift station shall be equal
to or greater than the peak wastewater inflow.
6.17.5.2 Site Considerations
Lift Station Site Survey and Platting — Prepare site survey
containing the lift station site boundary legal description or plat
also indicating all adjoining properties. The lift station site shall
be platted, and the City shall be granted fee title ownership of
the lift station site upon filing of the plat.
Access — A 12-foot wide minimum concrete driveway with
provisions for turning vehicles around shall be provided in a
dedicated right-of-way or permanent easement. Site shall be
accessible by maintenance vehicles, including cranes and other
large vehicles, during all weather conditions, including 100-year,
24-hour rainfall event.
Water Service —Provide a 1-inch water service with hose bib on -
site.
• Lift Station Fence and Gate
o Provide intruder resistance fence in accordance with 30 TAC
Chapter 217.59.
o Gates — Provide a gated entrance with two 8-foot wide gates
across the access road with a removable center pole.
■ Gates may be required to be upgraded as necessary
depending on the size of the lift station and the
equipment located on site.
Set gate entrance back at least 20 feet from the road to
allow vehicles to pull off the road before opening the
gate.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 105 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• Flood Protection
o The lift station shall be protected from the 100-year flood
event including wave action. The following Items shall be
indicated in the drawings:
■ The 100-year base flood elevation (BFE) and/or
floodplain delineation;
■ the elevation of the top of the wet well;
■ the elevation of the vent pipe outlet; and,
■ the elevation of base of all motor control centers.
o Grade the site to generally to drain away from the lift station
wet well, and to remove storm water runoff from the site in
a non -erosive manner.
o Flood Study — Provide a flood study if the lift station is
susceptible to localized flooding, or the 100-year or 25-year
flood event is not known.
6.17.5.3 Wet Wells
• Size and configure wet wells in accordance with 30 TAC
Chapter 217.60 — Lift Station, Wet Well, and Dry Well Designs
with the following additions:
o Wet Well Materials — Only reinforced concrete wet wells are
acceptable.
o Wet Well Coatings — Interior of the lift station wet well shall
be coated with a structural epoxy liner in accordance with
the City's Standard Specifications.
o Baffle Walls — Provide anti-vortexing baffle walls for lift
station with firm pumping capacity greater than 5.0 MGD,
when required by the requirements of the Hydraulic
Institute, or the pump manufacturer
o Wet Well Level — Bubbler systems are prohibited. Wet well
water levels shall be by ultrasonic with float switches
provided as a back-up
o Hydrostatic Test — Prior to backfilling the wet well, a
hydrostatic test shall be performed on the wet well structure,
performed in accordance with ACI 350 — Environmental
Engineering Concrete Structures.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 106 MAY 2019
FORT NORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o Ventilation— Ventilation for the wet well shall be designed
as a passive gravity ventilation system.
o Minimum Acceptable Diameter of Air Vents —The minimum
allowable passive vent diameter shall be 6 inches. Provide
stainless steel screens to prevent bird and/or insect entry into
the wet well.
o Odor Control — Odor control facilities may be required if
there is potential odor to be a nuisance at the site.
Coordinate with Water Department to determine odor
control requirements. An aeration system may be required.
6.17.6 Structural Design Criteria
6.17.6.1 Geotechnical Report — A geotechnical report, prepared with
information determined from a soil boring at the lift station site, shall
be required for the structural design of the lift station wet well and
valve vault. The geotechnical report shall contain, at a minimum, soil
classifications, information on the water table location, the soil
bearing capacity, and the lateral earth pressure coefficients.
6.17.6.2 Buoyancy — Design the wet well and valve vault to resist the
buoyancy due to the presence of the ground water table located at
finished grade or the 100-year base flood elevation, whichever is
higher. Submit buoyancy calculations to the Water Department upon
request.
6.17.6.3 Structural Design Considerations — The wet well and valve vault
shall be constructed using cast -in -place reinforced concrete. Structural
design calculations for the wet well and valve vault shall be submitted
to the Water Department, upon request.
• At a minimum, design wet well and valve vault for the following
loading conditions:
o Loading Condition #1— Wet well empty with full lateral
loads developed from groundwater and soil surcharge
conditions.
o Loading Condition #2 — Wet well filled to the top slab level
with water without the backfill in place.
6.17.6.4 Structural Details — Detailing of reinforcement shall follow the
requirements ofACI315, ACI318, and ACI350R. All construction
joints in water containing and below grade elements shall be provided
with water -stops.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 107 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.17.6.5 Access Hatches — Access hatches shall be aluminum frame with
stainless steel hardware. Hatches shall be lockable with recessed hasp.
Provide hatch nets or other approved fall prevention system for
hatches which provide access into the wet well. If not included in the
City's Standard Products List, acceptable manufacturers include
Bilco, Flygt, or approved alternate. Unless otherwise specified, access
hatches shall be designed for 300 pounds per square foot load rating
and be sized to accommodate removal of a pump sized for build -out
conditions of the station. Hatch size shall also be sufficient for pump
removal while mounted on rails with a 12-inch horizontal clearance.
6.17.6.6 Hardware used within the wet well, to include pipe supports, pump
guide rails, pump lifting chains, pipe fasteners, anchor bolts, clasps,
etc., shall be stainless steel.
6.17.6.7 Pipe Penetrations — Pipe penetrations into the lift station wet well
shall be waterproof and gas proof. Pipe penetrations use manufactured
wall pipe or other approved method.
6.17.6.8 Electrical conduits — Electrical conduits must pass through concrete
walls using use wall sleeves or core through walls and provide
waterproof and gas proof seals using link seals, or other approved
method.
6.17.7 Pumping and Mechanical Design Criteria
6.17.7.1 Lift Station Pumps — Lift Station Pumps and Mechanical shall be in
accordance with 30 TAC Chapter 217.61 - Lift Station Pumps with the
following additions:
0 Pumps shall be submersible only.
0 Pump and Motor Requirements:
o Allowable pump manufacturers shall be pre -approved by
Water Department
o Pumps shall be non -clog submersible, or approved equal,
capable of passing a minimum 3-inch diameter solid.
Pumps shall be provided with moisture and temperature
sensors that prevent running when in alarm. Alarms
must be connected to SCADA to indicate pump failure.
■ Grinder type pumps shall contain a grinder/shredder
type impeller.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 108 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o Pumps shall use a stainless steel, rail mounted pump support
system with a secured sealing surface that does not fall out
during removal/installation of pump.
o Stainless -steel lifting chain shall be attached to the pump
and hung next to cables for pump removal. Chains must be
rated for lifting more than the weight of the pump and
cables.
o Motors shall be non -overloading over the entire range o
pump operation.
o HOA switches should be provided for each pump with red
running lights indicating true run status.
o Submersible pumps shall be removable for inspection or
service without entering the wet well.
o Pumps impellers shall be certified to pass or shred flushable
wipes.
o The pump manufacturer shall be responsible for supplying
the pump, motor, discharge elbow, anchor bolts, guide rails,
and all miscellaneous stainless -steel hardware required to
place the submersible pump within the wet well.
Pump Head Calculations — System curves versus the pump
curve. One system curve shall be developed using a C factor bf
120, and another system curve shall be developed using a C
factor of 140. The selected pumps should be able to pump at it
minimum efficiency of 60% between the heads generated 1
between these C factors.
Net Positive Suction Head (NPSH) — The NPSH available shall
always at least 5 feet greater than the NPSH required as
calculated according Hydraulic Institute Standards. Calculations
shall be submitted to the Fort Worth Water Department, upon
request.
6.17.7.2 Lift Station Pipes and Valve Vaults
• Lift Station Pipes shall be in accordance with 30 Chapter TAC
217.62 - Lift Station Pipes, with the following additions:
o Each pump shall have an individual discharge pipe complete
with flanged coupling adaptor, check valve, and shut off
valve. Piping shall be sized so that the maximum discharp
velocity does not exceed 7 feet per second.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 109 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o Emergency Bypass Allowance — The lift station piping shall
allow an emergency bypass of the lift station wet well.
Provide a tee with a valve and quick connect on the
discharge side of the isolation valves.
o Flexible Connections — A flexible connection, consisting of
a flange coupling adaptor, shall be installed on each pump's
discharge piping between the valve vault wall and the check
valve in order to allow for removal and maintenance of
valves and fittings.
o Exposed Piping— Exposed piping shall be flanged ductile
iron and shall be painted with a primer and coating
combination acceptable to the Water Department. Flanged
pipe and fittings within the wet well and valve vault shall be
supported sufficiently to avoid excessive stress to flanges
and to allow for routine maintenance.
o Pressure Gauges — Each pump discharge shall be fitted with
a minimum 2-inch glycerin filled pressure gauge with
shutoff valve. The gauge range shall be as required to gage
the pump discharge head over the entire range of operation.
Check Valves — Provide a dedicated check valve for each pump
located within the valve vault.
o Check valves shall not be installed vertically.
o Check Valves with less than 5 fps and the system head is
less than 60 feet, the check valves may be swing type with
weighted lever.
o Check Valves with greater than 5 fps or where the system
head is greater than 60 feet, the check valves shall be
cushioned check swing valve.
o Check valves shall be of a type and manufacturer acceptable
to the Water Department.
Surge and Pressure Relief Valves — Surge or pressure relief
valves shall be required where the surge pressure exceeds the
pressure rating of the pipe.
o The surge relief line shall be piped back into the wet well.
o Surge and pressure relief valves shall be of a type and
manufacturer acceptable to the Water Department.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 110 MAY 2019
FORT NORTH
� CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Isolation Valves — Each pump shall have a dedicated isolation
valve.
o Isolations valves shall be a resilient seated OS&Y gate alve
or plug valve with position indicator, placed downstre; of
the check valve, located in the valve vault.
o Isolation valves shall be of a type and manufacturer
acceptable to the Water Department.
Access Hatches — Access hatches shall be aluminum frame ith
stainless steel hardware and lockable with a recessed hasp.
o If not included in the City's Standard Products List,
acceptable manufacturers include Bilco, Flygt, or approved
alternate and be sized to accommodate removal of a pump
sized for build -out conditions of the station. Hatch size shall
also be sufficient for pump removal while mounted on rails
with a 12-inch horizontal clearance.
o Unless otherwise specified, access hatches shall be designed
for 300 pounds per square foot load rating.
Ladders and Ladder Safety Equipment (Valve Vault Only) — ,The
minimum allowable ladder width shall be 16 inches. Rung
spacing shall be 12 inches, center to center. Top rung shall be
placed no more than 12 inches from the top hatch elevation.
Bottom rungs shall be placed a maximum of 12 inches from
valve vault fmished floor.
o Ladder -Up Safety Devices —Ladder safety extension, shJI
be provided with the ladder. Ladder extension shall be
easily reachable from the top slab of the valve vault.
• The minimum vertical distance from the valve vault top slab or
grate walking surface to the valve vault finished floor shall b 6
feet, 8 inches.
The overall length and width of the valve vault must provide A
least 24 inches of horizontal clearance between the outside edge
of the check valves and the valve vault walls.
• Valve vault floors shall be sloped to the sump to float activated
sump pump. The sump pump will pump water directly into the
wet well. The sump pump shall be located in a 24-inch deep by
24-inch diameter sump. Sump pumps shall be provided with a
check valve and shutoff valve, located in the valve vault.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS III MAY 2019
FORT WORTH
/"- CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
A valve vault with a grated top shall normally not require
mechanical ventilation. Mechanical ventilation shall be required
where grated valve tops are not utilized. Mechanical ventilation
systems under intermittent operation shall be designed to
provide a minimum of 30 air changes per hour. Mechanical
ventilation systems under continuous operation shall be designed
to provide a minimum of 6 air changes per hour
• The slope of the valve vault floor shall drain all water to the
sump.
6.17.8 Emergency Provisions for Lift Stations — Provisions for signage, alarms,
alternate power sources, as a well as other requirements shall be included in
the system design in accordance with 30 TAC Chapter 217.63 — Emergency
Provisions for Lift Stations.
6.17.8.1 Emergency on -site electrical power generation is required.
6.17.9 Force Mains
6.17.9.1 Lift station force mains shall be in accordance with 30 TAC Chapter
217.64 -Material for Force Main Pipes, 30 TAC Chapter 217.65 -
Force Main Pipe Joints, 30 Chapter TAC 217.66 - Identification of
Force Main Pipes, 30 TAC Chapter - 217.67 Force Main Design,,and
30 TAC Chapter 217.68 - Force Main Testing, with the following
additions:
• Alignment — Force mains shall be aligned to minimize peaks and
valleys which require combination air/vacuum valves.
Surge Pressure Design Considerations — The engineer shall
calculate the surge pressures expected within the force main
during pump operation.
o Where applicable, surge valves shall be placed downstream
of the check valve and shall discharge back into the wet
well.
Receiving Gravity Wastewater System — Due to odor
considerations, the manhole at the transition from the force main
to gravity main shall be located in the City right-of-way and as
far away from existing or proposed residences as possible.
Transition manhole should be designed to prevent surcharging
and/or overflow conditions.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 1 1 2 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
A corrosion resistant coating shall be placed at the transition
between the wastewater force main and the receiving gravity
main.
• Air and Vacuum Valves — Combination air and vacuum valves
shall be placed as required to vent air accumulation in the force
main and to prevent negative pressures from occurring within
the force main.
o Combination air and vacuum valves shall be required at all
peak/high points and all valleys/low points along the force
main vertical profile.
o Combination air and vacuum valves shall be of a type and
manufacturer acceptable to the Water Department.
6.17.10 Electrical and Instrumentation Design Criteria
6.17.10.1 Pump Cables— Pump cables must be designed to terminate in a
junction box on top of the wet well with appropriate termination strip.
Junction box must be a minimum of 3 feet away from opening to
facilitate pump removal. Cables shall be removable from conduits
without entering the wet well. Conduits shall be sealed with
removable sealant inside termination/junction box.
6.17.10.2 Pump Control and Level Monitor — Submersible pump lift stations
shall be controlled using approved control system and equipment with
ultrasonic level control. A high-level and low-level alarm float shall
be included within the monitoring system. Low-level float shall lock
out pump from running dry when water is below the set level. A
manual low-level override switch through relay logic shall be
provided for maintenance.
6.17.10.3 Load Analysis —Prepare a load analysis to size the main disconnect,
switches, generator (if required), motor breakers and starters,
transformer, wiring and conduit, and enclosures. Electrical system
shall meet the requirements of the City of Fort Worth Electrical Code.
6.17.10.4 Single Line Diagrams — Prepare a single line diagram of the lift
station electrical system and include the diagram within the
engineering drawings.
6.17.10.5 Control System Wiring Diagrams — Prepare the control wiring
diagram(s) and include the diagram(s) within the Drawings.
6.17.10.6 Enclosure Layout Diagrams — Prepare a schematic of the electrical
enclosure layout, motor control center, and support structures and
include the schematics within the Drawings.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 113 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.17.10.7 Enclosures — All exterior enclosures shall be NEMA 4, type 304 or
type 316 stainless steel. Enclosures must be mounted above the 100-
year base flood elevation. Motor control centers placed inside a
control building may be NEMA 3R.
6.17.10.8 Lighting — The lift station site shall be lighted with an approved
outdoor site light with photocell and manual switch. In addition, valve
vaults and motor control center buildings and enclosures shall be
lighted.
6.17.10.9 Supervisory Control and Data Acquisition (SCADA) Control —
Provide SCADA monitoring system within the drawings and
specifications. SCADA remote monitoring system shall be of the type
and manufacturer required by the Fort Worth Water Department. For
sites requiring radio telemetry, provide a radio frequency study.
6.17.11 Start-up and Project Closeout
6.17.11.1 Start-up — Start-up shall be conducted by the pump manufacturer's
factory trained start-up representative. The start-up and operational
test shall be conducted in the presence of the design engineer, Water
Department Staff, and the contractor.
6.17.11.2 Pump Warranty — The pump manufacturer shall warrant, in writing,
the pump system to be free from defects in materials for a period of 2
years starting from the date of final acceptance.
6.17.11.3 Project Closeout — The contract documents shall include requirements
for Submittals, Operation and Maintenance Manuals, Record
Drawings, Cleaning, and Closeout requirements in accordance with
Division 01 of the City's Standard Construction Specifications.
6.18 LOW-PRESSURE SYSTEMS
6.18.1 It is the intent of the Water Department to provide wastewater service by
main extensions. In the rare occasion that a wastewater main extension is not
a feasible service alternative, the Water Department Director may allow
design and construction of a low-pressure system to serve a development. At
a minimum, low-pressure systems shall be design in accordance with the
section and 30 TAC Chapter 217.97 —Pressure Sewers.
6.18.2 Design for the low-pressure system shall include grinder pumps, vault/wet
well, service lines, electrical/mechanical and enclosures, discharge mains,
and collection mains. Design shall be sealed by a Licensed Professional
Engineer in the State of Texas and submitted to the Water Department for
review.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 114 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.18.3 Permanent access should be provided for any facilities to be maintained I"
the City.
6.18.4 Provisions should be made in the form of an agreement between the Water
Department and the private entity responsible for the system to clearly outline
the division between privately maintained and City maintained facilities and
the terms for maintenance of said facilities.
6.19 BYPASS PUMPING FOR WASTEWATER MAINS
6.19.1 In the event that construction necessitates abandoning an existing wastewater
main prior to the new wastewater main being put in service, provisions must
be made for temporary bypass. Any necessary bypass pumping shall be
indicated on the construction drawings by requiring the contractor to provide
a bypass pumping submittal in accordance with the City's Standard
Construction Specifications and Details.
6.20 ABANDONMENT OF WASTEWATER MAINS AND APPURTENANCES
6.20.1 The design engineer shall identify all wastewater service lines connecting
into the existing wastewater main to be transferred to the new main, so that a
live wastewater main is not abandoned during construction.
6.20.2 Wastewater Mains, Manholes, and Junction Structures
6.20.2.1 Wastewater mains shall be abandoned by removal if the proposed
main is within the same trench as the existing main.
All other wastewater mains shall be abandoned by draining the
existing main, cutting and filling the existing main with grout,
and plugging in accordance with the City's Standard
Construction Specifications and Details.
6.20.2.2 Manholes and junction structures to be abandoned should be shown to
be removed on the construction drawings.
Should manhole/structure removal be determined by the Water
Department Staff to be unfeasible due to proximity of other
structures or utilities, the manhole/structure may be abandoned
by removing the top 3 feet of the manhole/structure and filling
with controlled low strength material (CLSM) in accordance
with City of Fort Worth Standard Construction Specifications
and Details
6.20.2.3 Wastewater mains within a single lot can be abandoned or converted
to service lines by written request to the Water Department. The d
of the public wastewater main will require a manhole if one does n�t
already exist.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS I 15 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.21 CROSSINGS
6.21.1 Texas Department of Transportation (TxDOT) Highway Crossings
6.21.1.1 The design of wastewater mains within or crossing a state highway
must be in compliance with all applicable TxDOT requirements,
including 43 TAC, Part 1, Chapter 21, Subchapter C — Utilities
Accommodation, unless a variance is approved by TXDOT. The
following reference applies: 43 TAC, Part 1, Chapter 21, Subchapter
C— Utilities Accommodation.
6.21.1.2 Wastewater mains shall be located to avoid or minimize the impact to
future highway projects and improvements, to allow other utilities in
the right-of-way, and to permit access to water mains and other utility
facilities for their maintenance with minimum interference to highway
traffic.
6.21.1.3 New wastewater mains crossing a highway shall be installed at
approximately 90' to the centerline of the highway.
6.21.1.4 New wastewater mains located longitudinally along a highway shall
be designed parallel to and outside of the right-of-way within a
separate easement.
• Any wastewater main proposed to be located longitudinally
within state highway right-of-way requires approval from the
Water Department Director.
6.21.1.5 All wastewater crossings shall be cased with steel casing pipe, in
accordance with the City's Standard Construction Specifications and
Details. Limits of casing pipe shall be in accordance with 43 TAC,
Part 1, Chapter 21, Subchapter C — Utilities Accommodation.
6.21.1.6 Manholes and other wastewater appurtenances shall not be placed in
the pavement or shoulder of highway.
6.21.1.7 Wastewater main crossings shall include a manhole on each side of
the highway crossing. Concrete collars shall be required, unless
allowed to be omitted at the discretion of Water Department Staff.
6.21.1.8 The Engineer shall be responsible for preparing draft permits with all
required drawings and attachments to the City. Drawings must be
signed and sealed by Licensed Professional Engineer in the State of
Texas. All drawings and attachments must be provided to the City in
electronic format. The City will submit the permit to TxDOT.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 1 l 6 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.21.2 Railroad Crossings
6.21.2.1 The design of wastewater mains within railroad right-of-way must be
in compliance with the requirements of the appropriate railroad
authority. The engineer should determine which railroad company
right-of-way is being crossed and obtain their utility accommodation
policies prior to beginning the design. These include, but are not
limited to, insurance and licensing agreement requirements.
6.21.2.2 License Agreement — Construction of mains cannot occur until a
permit or license agreement has been executed.
6.21.2.3 Transverse Crossing— New mains crossing the railroad shall be
installed at approximately 90' to the centerline of the railroad, if
possible.
6.21.2.4 Longitudinal/Encroachment Alignment - New wastewater mains
located longitudinally along railroad right-of-way shall be designed
parallel to and outside of the right-of-way within a separate easement.
• Any wastewater main proposed to be located longitudinally
within railroad right-of-way requires approval from the Water
Department Director.
• Longitudinal installation, if allowed, shall be located on uniform
alignments to and outside of the right-of-way line within an
easement to provide space for future railroad construction and
possible future utility installation.
• All new mains shall be located on top of back slope at the outer
limits of railroad property, and outside of the zone of influence
of any structure.
• If main is located 40 feet or less from centerline of track, the
mains shall be encased in a steel pipe as approved by the railroad
authority under jurisdiction. No pipe may be placed closer than
25 feet from the centerline of the track, or as required by the
appropriate railroad authority.
6.21.2.5 All mains crossing under railway track shall be placed in a steel
casing pipe, unless otherwise approved by railroad authority. Casing
pipe crossing railroad tracks shall be designed to withstand E80
railroad loadings in accordance with the City's Standard Construction
Specifications and Details and shall extend to the right-of-way lines.
6.21.2.6 Manholes, cleanouts and other appurtenances shall be placed outside
the limits of the right-of-way.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 117 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.21.2.7 Wastewater main crossings shall include a manhole on each side of
the railroad crossing.
6.21.2.8 The Engineer shall be responsible for preparing draft permits with all
required drawings and attachments to the City. Drawings must be
signed and sealed by Licensed.Professional Engineer in the State of
Texas. All drawings and attachments must be provided to the City in
electronic format. The City will submit the permit to Railroad. Any
application costs/fees associated with the railroad permit will be the
responsibility of the Engineer.
6.21.3 Creek, River, or other Water Feature Crossings
6.21.3.1 Creek, river, or other water feature crossings are required to meet
jurisdictional determination and permitting requirements in
accordance with the United States Army Corps of Engineers and other
regulatory agencies.
6.21.3.2 Main crossings of existing, or proposed, detention or retention ponds
are not allowed.
6.21.3.3 A primary consideration in the design of creek, river, or other water
feature crossings is the prevention of soil erosion at the areas of
trench backfill. As a minimum, cement stabilized backfill shall be
used from top of bank to top of bank in accordance with the City's
Standard Construction Specifications and Details. Erosion control
measures are also subject to review by the City's
Transportation/Public Works Department.
If velocities of the flowing water in the creek/river exceed 10
fps, the cement stabilized backfill shall be covered with riprap
and/or stone -filled caged baskets from top of bank to top of
bank.
In areas where there is a planned channel improvement, the
stabilized backfill shall be used up to the line of planned
improvement. The area above this planned line of improvement
shall be compacted fill.
All mains must be designed with a minimum clearance from the
top of the pipe to the bottom of the channel of 5 feet, or 1.5
multiplied by the outside diameter of the pipe, whichever is
greater.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 118 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
6.21.4 Trenchless Construction
6.21.4.1 Construction by other than open cut are methods used for wastewater
main placement under restrictive conditions when open cut
construction is not allowed.
6.21.4.2 Auger Boring
Design engineers should consider the location, size and depth of
boring and receiving pits when choosing the beginning and
ending stations for boring. A bore pit typically exceeds 20 feet in
length to accommodate one joint of pipe. Bore pit width varies
depending on the depth and size of pipe, with the narrowest
width approximately 5-7 feet.
Auger boring shall be designed in accordance with the City's
Standard Construction Specifications and Details. The
anticipated size and location for all bore pits should be included
in the design for the main and shown on the drawings.
Launching pits shall be located at the lower elevation end of the
tunnel.
6.21.4.3 Other Trenchless Construction — When traditional auger boring is not
feasible for the construction of the improvements, other tenchless
methods of construction such as hand tunneling, pipe enlargement,
and slip lining shall be designed by the engineer in accordance with
the City's Standard Construction Specifications and Details. Any
designs not meeting these standard requirements, such as, but not
limited to, micro -tunneling, open shield pipe jacking, and horizontal
directional drilling, will require submittal of design and technical
specifications for an additional review by the Water Department Staff.
6.21.5 Elevated Crossings
6.21.5.1 Elevated crossings for wastewater mains should be avoided. Elevated
crossings create special design problems in which no set of
circumstances is duplicated from one design to another. Two methods
of elevated crossings acceptable for consideration by the engineer are:
• Hanging the wastewater main on a roadway bridge; or,
• Designing a specific utility bridge for the support of the
wastewater main crossing.
6.21.5.2 The following basic criteria must be addressed by the engineer for All
elevated crossings:
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 119 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• Elevated crossings must maintain gravity flow to meet capacity
requirements.
• Prior to proceeding with design for attaching a main to a bridge,
documentation of correspondence approving the placement of
the main on the bridge should be provided to the Water
Department.
• Increased loading effects on the bridge created by a full main
and its supports.
• Access to main for maintenance purposes.
• Coatings or methods of corrosion control for elevated pipe
sections and pipe supports.
• PVC pipe is not to be used for any exposed sections of elevated
crossing because of the deterioration caused by the ultraviolet
rays present in direct sunlight.
• Evaluate the freeze potential of small diameter or low flow
mains.
• To ensure positive restraint in all directions, each joint of pipe is
to have (2) support straps. Spacing of pipe supports is to be in
accordance with the length of pipe joints specified and one of the
supports should be placed near the bell end of the pipe.
• Placement of the expansion joints should coincide with the
expansion joints of the road way bridge.
• Wastewater main crossings shall include a manhole on each side
of the elevated crossing.
6.21.5.3 For bridge sections:
• Pipe with restrained joints or monolithic pipe shall be required
between manholes on each end of bridged sections.
• Design to withstand the hydraulic forces applied by the
occurrence of a 100-year flood, including buoyancy.
• Pipe material shall also be capable of withstanding impact from
debris.
• Bank stabilization shall be provided to prevent erosion of bank
sections.
DESIGN CRITERIA FOR WASTEWATER SYSTEMS 120 MAY 2019
F_0RTORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Pier supports shall be spaced and designed to ensure that
adequate grade, slope and structural integrity are maintained.
6.22 PAVEMENT REPAIR
6.22.1 Mains designed to be placed within existing pavement shall contain
provisions for pavement repair in accordance with the City's Street Cut
Policy as well as the Standard Construction Specifications and Details.
DESIGT4 CRITERIA FOR WASTEWATER SYSTEMS 121 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
SECTION 7 — DESIGN CRITERIA FOR RECLAIMED WATER MAINS
7.1 GENERAL
7.1.1 The following are the minimum Standard Design Criteria that must be met
for all reclaimed water improvements in order to meet the requirements of 30
Texas Administrative Code (TAQ Chapter 210, 217, and 290, and current
editions of the City of Fort Worth Subdivision Ordinance, the City of Fort
Worth Policy for the Installation of Community Facilities, and City Code
Chapter 35 to be approved for incorporation into the Fort Worth Reclaimed
Water System.
7.1.2 Once a reclaimed water service agreement is executed for reclaimed water to
be provided by the City, all public and privately owned and maintained
reclaimed water mains must meet the requirements of the standard reclaimed
water agreement set forth in City Code Chapter 35 as well as the
requirements within 30 TAC Chapter 210.
7.1.3 Reclaimed water mains must be designed in accordance with acceptable
engineering practices and must be labeled and separated from other mains to
protect human health and the environment.
7.2 SIZING RECLAIMED WATER MAINS
7.2.1 Standard Sizes — New reclaimed water mains shall consist of the following
diameters (in inches): 4, 6, 8, 12, 16, 20, 24, 30, 36, and multiples of 6-inch
thereon.
7.2.1.1 The minimum size for reclaimed water mains is 4-inches.
7.2.2 The reclaimed water mains should be sized in accordance with applicable
master plan established for that area, if available. If a master plan is not
available, the sizing of the main must be based on engineering analysis of
initial and future demand of the reclaimed water users. A Loading Analysis
or Water Study shall be performed to determine the demand/loads created by
proposed development and if any necessary improvements to the existing
system to support the development are needed. Water and Sewer Study
Guidelines are included in the Appendix.
7.2.3 Reclaimed water main pipe design requires an additional allowance for
transient pressures due to system operation. This allowance should be
coordinated with the Water Department Staff to determine an appropriate
pressure to be applied to account for possible transient conditions in the
system.
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 122 MAY 2019
FORTWORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
7.2.4 Continuous supply of reclaimed water is not guaranteed. All system designs
should incorporate provisions to accommodate an alternate supply, if needed.
7.2.5 An alignment walk with Water Department Staff and/or study may be
required if the water main is outside of the public right-of-way. Reclaimed
water mains 16-inch and larger in diameter will require an alignment wallf.
7.2.6 Water Demand Calculations — Demand calculations and assumptions should
be submitted for review. Where applicable, calculations and criteria should
adhere to the guidelines set forth in the Water and Sewer Study Guidelines
which are included in the Appendix.
7.3 TYPICAL LAYOUT OF RECLAIMED WATER MAINS, SERVICE LINES,
AND APPURTENANCES WITHIN RIGHT-OF-WAY
7.3.1 Location of all new reclaimed water mains shall be considered on a case -by -
case basis generally on the opposite side of the street from any existing or
proposed water mains. Reclaimed water mains should be located where
maintenance can be accomplished with the least interference with traffic,
structures, and other utilities. When mains are located outside of the right-of-
way, they shall be within a dedicated reclaimed water main easement.
7.3.2 Valves — In general, valve locations for reclaimed water mains should meet
the same requirements as water mains.
7.3.2.1 Valves should be located at all reclaimed water main intersections and
should typically be located within the street intersection at reclaimed
water main crosses or tees.
7.3.2.2 Valve locations shall align with projected property line, unless other
locations are approved by the Water Department Staff.
7.3.2.3 For sizing and spacing of valves, refer to Section 7.8 (Gate Valve and
Butterfly Valve Requirements).
7.3.3 Service Locations — The preferred location for reclaimed water service lines
is within the parkway in front of the right-of-way line, and adjacent to the
opposite property line from the water service. However, minimum separation
distances should be provided:
7.3.3.1 Reclaimed water service lines should be separated a minimum
distance of 9 feet from water service lines and 4 feet from the
wastewater service lines as measured from the outside diameters of
each line.
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 123 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
7.4 HORIZONTALNERTICAL ALIGNMENT AND CLEARANCE
REQUIREMENTS
7.4.1 Radius of Curvature/Joint Deflection — Minimum radius of curve and
maximum deflection angle of pipe joints will be restricted to 50% of
manufacturer's recommendation, after which the use of horizontal or vertical
bends will be required. No bending of pipe is allowed.
7.4.2 Bends — All bends shall be 45' or less, where practicable. Two 45' bends in a
series should be used in lieu of 90' bends. Tee fittings should be used in lieu
of a 90' bend to allow for proper restraint for future maintenance or
connections.
7.4.3 Restrained Joints — All vertical and horizontal fittings and valves shall be
designed with restrained joints in addition to concrete thrust blocking.
Anchor tees or anchor couplings should be used to secure all branch valves to
fittings. Table 7-1 includes the minimum lengths of pipe to be restrained for
8-inch and 12-inch PVC reclaimed water mains.
Table 7-1. PVC Pipe Joint Restraint Length
Pipe Size Plugs, Tees, and Bends*
(inches) Valves 900 450 22.50 11.250
8 88ft 33ft 14ft 7ft 4ft
12 126ft 45ft 19ft 9ft 5ft
*Length to be restrained on each side of the bend, tee, or valve.
Assumptions: 250 psi test pressure, 1.5 safety factor, SP soil type, Type 4 trench
7.4.4 Depth of Cover Requirements:
7.4.4.1 12-inch and smaller reclaimed water mains shall be designed for a
minimum cover of 48-inches measured from the top of ground to the
top of pipe.
7.4.4.2 16-inch and larger reclaimed water mains shall be designed for a
minimum cover of 60-inches measured from the top of ground to the
top of pipe.
7.4.5 Clearance Requirements
7.4.5.1 Other Water Mains
• If a reclaimed water main is required to be laid parallel to an
existing water or reclaimed water main, a minimum horizontal
clearance of 5 feet shall be maintained as measured from the
outside diameter of each main. In no case shall the excavation of
either main impact the bedding or embedment of the other main.
Engineer is responsible for determining proper clearance
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 124 MAY 2019
FORT WORTH
`11"/" CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
between mains based upon soil conditions. Trench boxes,
hydraulic shoring, or other means may be necessary to achie e 5
feet, or more, clearance.
7.4.5.2 Storm Drain
When reclaimed water mains are parallel to storm drains, the
minimum horizontal clearance shall be 5 feet as measured from
the outside diameters of each main, or as required by the
Transportation and Public Works Department, whichever is
greater.
• When reclaimed water mains cross storm drains, the reclaimed
water main should cross over the storm drain with a minimum
clearance of 2 feet as measured from the outside diameters of
each main.
o If the minimum clearance of 2 feet crossing over the storm
drain cannot be achieved, casing or an alternate alignment
may be required.
o If crossing over the storm drain cannot be achieved, the
reclaimed water main should cross under the storm drain in
accordance with the City's Standard Construction Details.
7.4.5.3 Franchise Utilities — A minimum clearance of 3 feet horizontally and
vertically shall be maintained from all franchise utilities such as gas,
electric, fiber optic, and cable within City right-of-way. Where the
minimum clearance cannot be accommodated, less than minimum
clearance may be allowed at the discretion of Water Department Staff.
Coordination with each utility is required to confirm clearance
requirements.
• The more stringent clearance requirements will be enforced.
7.4.5.4 Non -Franchise Utilities —Reclaimed water mains proposed to parallel
or cross existing non -franchise utility lines, such as gas/energy
pipelines, shall adhere to the owner of the gas pipeline's clearance,
and other, requirements. At a minimum, reclaimed water mains shall
maintain a horizontal clearance of 3 feet and vertical clearance of 3
feet, as measured from the outside diameters of each main. However,
if the non -franchise utility contains an impressed current cathodic
protection system, a minimum horizontal clearance of 5 feet and
vertical clearance of 3 feet is required as measured from the outside
diameters of each main to minimize the impacts of stray current to the
main, fittings, and appurtenances.
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 12> MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Coordination with the non -franchise utility line owner is
required to confirm clearance requirements. The more stringent
clearance requirements will be enforced.
7.4.5.5 Drilled Shafts — Reclaimed water mains adjacent to drilled shafts shall
be designed with a minimum horizontal clearance of 10 feet as
measured from the outside diameter of the main to the outside edge of
the drilled shaft.
7.4.5.6 Drainage Headwalls and Inlets
• Reclaimed water mains shall not cross under headwalls and
inlets.
• Reclaimed water mains adjacent to headwalls and inlets shall be
designed with a minimum horizontal clearance of 10 feet to
headwall and 5 feet to inlets as measured from the outside
diameter of the main to the outside edge of the headwall or inlet.
o In right-of-way sections where this clearance is not feasible,
an alternate alignment for the reclaimed water main may be
allowed at the discretion of the Water Department Staff.
Reclaimed water mains perpendicular to headwalls and inlets
shall be designed with a minimum clearance of 10 feet to
headwall and 5 feet to inlets as measured from the outside
diameter of the main to the outside edge of the headwall or inlet.
7.4.5.7 Mechanically Stabilized Earth (MSE) or Other Retaining Walls
Reclaimed water mains adjacent to MSE or other retaining walls
shall be designed to be placed outside of the zone of influence of
the wall, as determined by a Licensed Professional Engineer.
Reclaimed water mains crossing MSE, or other retaining walls,
shall be designed with steel casing through the entirety of the
zone of influence of the wall, as determined by a Licensed
Professional Engineer.
7.4.5.8 Other Bridge Features — A minimum clearance of 5 feet horizontally
and vertically shall be maintained from all other bridge features,
unless required to be greater as regulated by the bridge owner.
7.4.5.9 Coordination with Other Entities — In situations where reclaimed
water mains are required to be placed adjacent, within, or crossing
easements or right-of-way of highway or railroad entities, the
Engineer is responsible for coordinating with such entity to confirm
that future expansions from the entity will not impact the proposed
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 126 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
reclaimed water main. Documentation of such correspondence should
be provided for review.
7.5 RECLAIMED WATER MAIN SEPARATION FROM WATER AND
WASTEWATER MAINS
7.5.1 In accordance with 30 TAC Chapter 210.25 requirements, where a reclaimed
water main parallels a wastewater main, the reclaimed water main shall be
constructed in accordance with subsection (1) of this section. The horizontal
separation distance shall be 3 feet (outside diameter to outside diameter) with
the reclaimed water main at the level of or above the wastewater main.
Reclaimed water mains which parallel wastewater mains may be placed in
the same benched trench. Where a reclaimed water main crosses a
wastewater main, the requirements of Chapter 290.44 shall be followed, with
"reclaimed water main" substituted in for "water main."
7.5.2 In accordance with 30 TAC Chapter 217.70 requirements, a Type I reclaimed
water pipe must be at least 4 feet from a potable water pipe, as measured
from the outside surface of each of the respective pipes. A physical
connection between a potable water pipe and a reclaimed water pipe is
prohibited. Where a 4-foot separation distance cannot be achieved, a
reclaimed water main must meet additional separation requirements set forth
in 30 TAC Chapter 217.70.
7.6 RECLAIMED WATER MAIN MATERIALS AND EMBEDMENT
7.6.1 All piping shall be manufactured in purple, painted purple, taped with purple
metallic tape, or bagged in purple. Any exposed piping should be stenciled in
white with a warning reading "Non -Potable Water".
7.6.2 Other material and embedment requirements for reclaimed water mains Shull
be as defined in the City's Standard Construction Specifications and Details
for water mains.
7.6.3 Trench Water Stops
7.6.3.1 If encountered during construction, or if groundwater is known to be
present, trench water stops should be installed at 500-foot intervals to
prevent migration of water within the water main trench, unless
otherwise determined by the Engineer.
7.6.3.2 If a project is within the jurisdiction of the current City Code
Appendix A, Zoning Regulations, Chapter 6 Section 6.302 (Tree
Ordinance), all onsite underground utilities with backfill other thar
onsite material shall have a trench water stop every 200 feet for the
entire length of the utility placement
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 127 MAY 2019
FORT WORTH
7.7
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
CONNECTIONS TO EXISTING RECLAIMED WATER MAINS
7.7.1 Cut -in Tees — Connections are to be made in locations where existing valves
can be closed to isolate the connection point while keeping as much of the
surrounding system in service as possible. Cut -in tees are the preferred
method of connecting a new reclaimed water main to an existing reclaimed
water main. If this method is determined not to be feasible by the Water
Department Staff, a tapping sleeve and valve may be used.
7.7.1.1 Cut -in connections may require an additional valve on the existing
main to reduce the number of service disruptions.
7.7.1.2 For tapping sleeves, if allowed, the tap can only be connected to
reclaimed water mains when the tap is at least one size smaller than
the existing main size. For example: 12-inch existing reclaimed water
main size and 8-inch tap and tapping valve size.
7.8 GATE VALVE REQUIREMENTS
7.8.1 Valve Spacing — Spacing between valves for reclaimed water mains shall be
at a minimum of every 1,500 feet, or as needed for operation of the reclaimed
water system.
7.8.2 Mains — All new reclaimed water main connections (reclaimed water
services, mains etc.) shall contain a valve at connections to an existing or
proposed reclaimed water main.
7.8.3 Gate Valves — Unless approved by the Water Department Staff, only gate
valves will be used in the distribution system for reclaimed water mains.
7.8.3.1 Vaults for 16-inch Valves & Larger —All valves that are 16-inches, or
larger, shall be installed in a valve vault in accordance with City's
Standard Construction Specifications and Details.
7.8.3.2 Minimum Gate Valve Size — The minimum size of gate valve allowed
is 6 inches. Any valves needed for 4-inch or smaller connections
should be increased with a 6-inch reducer fitting and 6-inch gate
valve.
7.8.4 Valve Orientation — All valves shall be installed in the vertical direction. No
horizontal orientations will be allowed. Valves must be placed perpendicular
to the existing/proposed ground elevation. Valves shall open in the clockwise
direction.
7.9 CLEANING, TESTING, AND SAMPLING
7.9.1 Cleaning Pigs and Wyes - In strategic locations along water mains, cleaning
wyes shall be provided for passing cleaning pigs through the reclaimed water
main to sweep trash, dirt and debris from the pipe. These wyes shall be
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 128 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
supplemented with sampling points, as required, for testing of the reclailr ed
water main.
7.9.1.1 Locations for insertion of cleaning pigs and clean -out wyes shall he
located on the construction drawings and in accordance with City 9f
Fort Worth Standard Construction Specifications and Details. The
Water Department Staff will review the cleaning pig insertion
locations and clean -out wyes on the drawings.
7.9.1.2 Cleaning wyes should include a receiving cage to accommodate
pressure differentials during pigging operations.
7.9.2 Water for Cleaning and Testing — If reclaimed water is not available for
cleaning and testing, provisions should be made in the construction drawings
to temporarily connect the reclaimed water main to a potable water main. The
temporary connection must include proper backflow prevention device to
prevent a cross -connection, and the temporary connection shall be removed
upon completion of testing.
7.9.3 Sampling Points — All sampling points, including automatic flushing devices,
shall be designed with a direct discharge connection to a wastewater main.
The connection must include proper cross -connection design in accordance
with TCEQ requirements.
7.10 COMBINATION AIR VALVE ASSEMBLIES
7.10.1 In accordance with American Water Works Association (AWWA) standards
and manuals of practice, combination air release/vacuum valves shall be
installed in locations such to exhaust trapped air from the water distribution
system. These locations include, but are not limited to, high points, the
downstream side of mainline valves, increased downslopes or decreased
upslopes, long ascents or descents, and the beginning and end of horizontal
runs. Refer to AWWA M51 for all suggested locations and types of air
release/vacuum valves. Table 7-2 includes general sizes of combination air
valve assemblies but shall be verified by the Engineer.
Water Main Size
16-inch and smaller
24-inch to 30-inch
36-inch
42-inch
48-inch
54-inch and larger
Table 7-2. Combination Air Valve Assemblies
Size of Relief Valve
2-inch
4-inch
6-inch
6-inch
8-inch
8-inch
Type of Relief Valve
Combination
Combination
Combination
Combination
Combination
Combination
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 129 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
7.10.1.1 A smaller size relief valve may be used if calculations sealed by a
Licensed Professional Engineer are provided to demonstrate that the
smaller valve size is sufficient for system design.
7.10.1.2 Combination relief valves shall be installed in vaults in accordance
with the City's Standard Construction Specifications and Details.
7.11 BLOW -OFF ASSEMBLIES
7.11.1 Blow -off valves and vaults are required in the system to drain the mains and
shall be placed at low points along transmission mains (I6-inchand larger).
Blow -off assembly valve sizes are shown in Table 7-3. Blow -off assemblies
must be designed to discharge into a wastewater main manhole with an
appropriate backflow prevention device to prevent a cross -connection. In
addition, capacity of the receiving discharge wastewater main must be
evaluated to determine whether the main has sufficient capacity to receive the
addition demand.
Table 7-3. Blow -off Valve Size
Water Main Size Size of Blow -off Valve
16-inch 6-inch
24-inch and larger 8-inch
7.12 BACKFLOW PREVENTION DEVICE
7.12.1 A backflow prevention device shall be installed at each delivery point and
discharge point to protect the reclaimed water system from potential cross
contamination. Air gaps and reduced pressure principle backflow prevention
assemblies are acceptable methods of backflow prevention for reclaimed
water systems in accordance with 30 TAC Chapter 290.4769, effective July
30, 2015. The Engineer is responsible for adhering to the most current
version of these requirements.
7.13 HOSE BIBS AND FAUCETS
7.13.1 The language in this section is a summary from 30 TAC Chapter 210.25
requirements, effective February 12, 1997 and are included only for
reference. The Engineer is responsible for adhering to the most current
version of these requirements.
7.13.2 All hose bibs and faucets shall be painted purple and designed to prevent
connection to a standard water hose.
7.13.3 Hose bibs shall be located in locked, below grade vaults which shall be
clearly labeled as being of non -potable quality. As an alternative to the use of
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 130 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
locked, below grade vaults with standard hose bibs services, hose bibs m�.y
be placed in a non -lockable service box which can only be operated by a
special tool so long as the hose bib is clearly labeled as non -potable water.
One of the following requirements must be met by the user or provider, for
any area where reclaimed water is stored or where there exists hose bibs cr
faucets:
7.13.3.1 Signs having a minimum size of 8 inches by 8 inches shall be posted
at all storage areas and on all hose bibs and faucets reading, in boil
English and Spanish, "Reclaimed Water, Do Not Drink" or similar
warning.
7.13.3.2 The area shall be secured to prevent access by the public.
7.13.3.3 An example sign is included below:
DO NOT DRINK THE WATER
NO TOMAR EL AGUA
7.14 SERVICE LINE AND RECLAIMED WATER METER REQUIREMENTS
7.14.1 Service Lines — Reclaimed service lines shall meet the same criteria as set
forth in Section 5.18 (Service Line and Water Meter Requirements) for water
service lines.
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 131 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
7.14.2 Meters — Reclaimed water meters should meet the same criteria as set forth in
Section 5.18 (Service Line and Water Meter Requirements) for water meters,
in addition to the following:
7.14.2.1 Drawings must show the location of the reclaimed meter and specify
purple meter and lids.
7.14.2.2 Meter boxes and vaults shall be locked, or accessible only with
special tools, square, or rectangular, with "Reclaimed Water" cast into
the lid.
7.14.2.3 Sample test points shall be required and shall be locked, plugged, or
capped to prevent access to the reclaimed water system.
7.14.3 Drawings shall show irrigation lines, sizes, and specify pipe color to be
purple. All sprinkler heads, control box, and meter covers shall be purple.
7.14.4 Maximum Number of Meters per Lot — The number of meters allowed on one
lot shall not exceed 4.
7.15 CATHODIC PROTECTION
7.15.1 If materials other than PVC are proposed for City reclaimed water maids, a
Cathodic Protection Study should be performed by a corrosion specialist. In
accordance with recommendations from the Cathodic Protection Study,
Construction Drawings and Specifications should include provisions for
Cathodic Protection in accordance with the City of Fort Worth Standard
Construction Specifications and Details
7.16 ABANDONMENT OF RECLAIMED WATER MAINS AND
APPURTENANCES
7.16.1 Reclaimed water mains shall be abandoned by removal if the proposed main
is within the same trench as the existing main.
7.16.1.1 All other reclaimed water mains shall be abandoned by draining the
existing main, cutting and filling the existing main with grout, and
plugging in accordance with the City's Standard Construction
Specifications and Details.
7.16.2 Reclaimed water appurtenances shall be removed and salvaged in accordance
the City's Standard Construction Specifications and Details.
7.17 CROSSINGS
7.17.1 Texas Department of Transportation (TxDOT) Highway Crossings
7.17.1.1 The design of reclaimed water mains within a state highway must be
in compliance with all applicable TxDOT requirements, unless a
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 132 MAY 2010
FORT NORTH
�`�
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
variance is approved by TXDOT. The following reference applies: 43
TAC Part 1, Chapter 21, Subchapter C — Utilities Accommodation.
7.17.1.2 Reclaimed water mains shall be located to avoid or minimize the
impact to future highway projects and improvements, to allow other
utilities in the right-of-way, and to permit access to water mains acid
other utility facilities for their maintenance with minimum
interference to highway traffic.
7.17.1.3 Reclaimed water mains crossing a highway shall be installed at
approximately 90' to the centerline of the highway.
7.17.1.4 Reclaimed water mains located longitudinally along a highway shall
be designed parallel to and outside of the right-of-way in a separate
easement.
Any reclaimed water main proposed to be located longitudinally
within state highway right-of-way requires approval from the
Water Department Director.
7.17.1.5 All reclaimed water crossings shall be cased with steel casing pipe, in
accordance with City's Standard Construction Specifications and
Details. Limits of casing pipe shall be in accordance with 43 TAC,
Part 1, Chapter 21, Subchapter C — Utilities Accommodation.
7.17.1.6 Reclaimed water valves and other appurtenances shall not be placed
in the pavement or shoulder of highway.
7.17.1.7 Reclaimed water main crossings shall include a valve on each side of
the highway crossing.
7.17.1.8 Individual service meters shall be placed outside the limits of the
right-of-way within an easement.
7.17.1.9 The Engineer shall be responsible for preparing draft permits with all
required drawings and attachments to the City. Drawings must be
signed and sealed by Licensed Professional Engineer in the State of
Texas. All drawings and attachments must be provided to the City in
electronic format. The City will submit the permit to TxDOT.
7.17.2 Railroad Crossings
7.17.2.1 The design of reclaimed water mains within railroad right-of-way
must be in compliance with the requirements of the appropriate
railroad authority. The engineer should determine which railroad
company right-of-way is being crossed and obtain their utility
accommodation policies prior to beginning the design. These include,
DESIGN CRITERIA FOR RECLAIMED WATERMAINS 133 MAY2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
but are not limited to, insurance and licensing agreement
requirements.
7.17.2.2 License Agreement — Construction of mains cannot occur until a
permit or license agreement has been executed.
7.17.2.3 Transverse Crossing — Reclaimed water mains crossing the railroad
shall be installed at approximately 90' to the centerline of the
railroad, if possible.
7.17.2.4 Longitudinal/Encroachment Alignment - New reclaimed water mains
located longitudinally along railroad right-of-way shall be designed
parallel to and outside of the right-of-way within a separate easement.
• Any reclaimed water main proposed to be located longitudinally
within railroad right-of-way requires approval from the Water
Department Director.
• Longitudinal installation, if allowed, shall be located on uniform
alignments to and outside of the right-of-way line within an
easement to provide space for future railroad construction and
possible future utility installation.
• All new mains shall be located on top of back slope at the outer
limits of railroad property.
• If main is located 40 feet or less from centerline of track, the
mains shall be encased in a steel pipe as approved by the railroad
authority under jurisdiction. No pipe may be placed closer than
25 feet from the centerline of the track, or as required by the
appropriate railroad authority.
7.17.2.5 All mains crossing under railway track shall be placed in a steel
casing pipe, unless otherwise approved by railroad authority. Casing
pipe crossing railroad tracks shall be designed to withstand E80
railroad loadings in accordance with the City's Standard Construction
Specifications and Details and shall extend to the right-of-way lines.
7.17.2.6 Reclaimed water valves, meters and other appurtenances shall be
placed outside the limits of the right-of-way.
7.17.2.7 Reclaimed water main crossings shall include a valve on each side of
the railroad crossing.
7.17.2.8 The Engineer shall be responsible for preparing draft permits with all
required drawings and attachments to the City. Drawings must be
signed and sealed by Licensed Professional Engineer in the State of
Texas. All drawings and attachments must be provided to the City in
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 134 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
electronic format. The City will submit the permit to Railroad. Ary
application costs/fees associated with the railroad permit will bet e
responsibility of the Engineer.
7.17.3 Creek, River, or other Water Feature Crossings
7.17.3.1 Creek, river, or other water feature crossings are required to meet
jurisdictional determination and permitting requirements in
accordance with the United States Army Corps of Engineers and other
regulatory agencies.
7.17.3.2 Main crossings of existing, or proposed, detention or retention ponds
are not allowed.
7.17.3.3 A primary consideration in the design of creek, river, or other water
feature crossings is the prevention of soil erosion at the areas of
trench backfill. As a minimum, cement stabilized backfill shall be
used from top of bank to top of bank in accordance with the City's
Standard Construction Specifications and Details. Erosion control
measures are also subject to review by the City's
Transportation/Public Works Department.
• If velocities of the flowing water exceed 10 fps, the cement
stabilized backfill shall be covered with riprap and/or stone -
filled caged baskets from top of bank to top of bank.
• In areas where there is a planned channel improvement, the
stabilized backfill shall be used up to the line of planned
improvement. The area above this planned line of improvement
shall be compacted fill.
• All mains must be designed with a minimum clearance from the
top of the pipe to the bottom of the channel of 5 feet, or 1.5
multiplied by the outside diameter of the pipe, whichever is
greater.
7.17.4 Trenchless Construction
7.17.4.1 Construction by other than open cut are methods used for reclaimed
water main placement under restrictive conditions when open cut
construction is not feasible. Only straight pipe alignments for both
horizontal and vertical alignment are allowed.
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 135 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
7.17.4.2 Auger Boring
Engineers should consider the location, size and depth of boring
and receiving pits when choosing the beginning and ending
stations for boring. A bore pit typically exceeds 20 feet in length
to accommodate one joint of pipe. Bore pit width varies
depending on the depth and size of pipe, with the narrowest
width approkimately 5-7 feet.
Auger Boring shall be designed in accordance with the City's
Standard Construction Specifications and Details. The
anticipated size and location for all bore pits should be included
in the design for the main and shown on the drawings.
Launching pits shall be located at the lower elevation end of the
tunnel.
7.17.4.3 Other Trenchless Construction — When traditional auger boring is not
feasible for the construction of the improvements, other trenchless
methods of construction such as hand tunneling shall be designed by
the engineer in accordance with City's Standard Construction
Specifications and Details. Any designs not meeting these
requirements, such as,, but not limited to, micro -tunneling, open shield
pipe jacking, and horizontal directional drilling, will require submittal
of design and technical specifications for an additional review by the
Water Department Staff.
7.17.5 Elevated Crossings
7.17.5.1 Elevated crossings for reclaimed water mains should be avoided.
Elevated crossings create special design problems in which no set of
circumstances is duplicated from one design to another. Two methods
of elevated crossings acceptable for consideration by the engineer are:
• Hanging the reclaimed water main on a roadway bridge; or,
• Designing a specific utility bridge for the support of the
reclaimed water main crossing.
7.17.5.2 The following basic criteria must be addressed by the engineer for all
elevated crossing:
Prior to proceeding with design for attaching a main to a bridge,
documentation of correspondence approving the placement of
the main on the bridge should be provided to the Water
Department.
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 136 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• Provisions for thrust restraints at the points of transition front a
buried conduit to an elevated conduit and for all elevated
changes of alignments and fittings.
• Reclaimed water main must be fully restrained at changes in
alignment and at fittings, as necessary.
• Increased loading effects on the bridge created by a full glair
and its supports.
• Access to main for maintenance purposes.
• Coatings or methods of corrosion control for elevated pipe
sections and pipe supports.
• PVC pipe is not to be used for any exposed sections of elevated
crossing because of the deterioration caused by the ultraviolet
rays present in direct sunlight.
• Evaluate the freeze potential of small diameter or low flow
mains.
• To ensure positive restraint in all directions, each joint of pipe is
to have 2 support straps. Spacing of pipe supports is to be in
accordance with the length of pipe joints specified and one of the
supports should be placed near the bell end of the pipe.
• Air relief provisions are required where high points are created
in the main.
• A minimum of one expansion joint fitting is recommended for a
reclaimed water main crossing on a roadway bridge. Placement
of the expansion joints should coincide with the expansion joints
of the road way bridge.
• Reclaimed water main crossings shall include a valve on each
side of the elevated crossing.
• Proposed elevation of the main shall meet low chord bridge
requirements and be 2 feet above the 100-year water surface
elevation to prevent damage to the main.
7.18 PAVEMENT REPAIR
7.18.1 Mains designed to be placed within existing pavement shall contain
provisions for pavement repair in accordance with the City's Street Cut
Policy as well as the Standard Construction Specifications and Details.
DESIGN CRITERIA FOR RECLAIMED WATER MAINS 137 MAY 2019
F-oRT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
SECTION 8 — REQUIREMENTS FOR DRAWINGS
8.1 GENERAL PLAN SHEET REQUIREMENTS
8.1.1 The cover sheet should include the following information:
8.1.1.1 Appropriate names and titles, such as the Mayor, City Manager, and
Water Department Director.
8.1.1.2 If the project affects other organizations, such as the Parks
Department, another City or Governmental Agency, etc., their names
should be included
8.1.1.3 Engineer's name, seal, and engineering firm name and registration
number, in accordance with the Texas Board of Professional
Engineers (TBPE) Board Rules §137.33 and §137.77.
8.1.1.4 Acceptable project name and project numbers, as approved by
Infrastructure Plan Review Center (IPRC).
• Project numbers consist of:
o City Project Number;
o "X" Number; and,
o Water/Wastewater Fund Account Numbers.
8.1.1.5 Location map in the center of the sheet.
8.1.1.6 Project name and City Project Number on the right edge.
8.1.2 Full size drawings shall be submitted on 22" x 34" paper.
8.1.3 Scales are to be shown on each sheet, both numerically and graphically. The
standard scale is as follows:
8.1.3.1 Layout Sheets: 1 inch = 100 feet
8.1.3.2 Profile Sheets: 1 inch = 4 feet vertical
8.1.3.3 Plan Sheets: 1 inch = 40 feet horizontal
• Exceptions may be allowed by the Water Department Staff when
a double scale would show the overall layout more clearly.
8.1.4 Water Department Capital Improvements Plan (CIP) project drawings should
include a standard title block, shown below. Development type projects
should refer to the standard title block template included in Infrastructure
Plan Review Center (IPRC) requirements.
REQUIREMENTS FOR DRAWINGS 1118 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
CITY OF FORT WORTH, TEXAS
WATER DEPARTMENT
PLAN & PROFILE
DESIGNED: SUHMrrTED:
REVIEWED: RECOMMENDED:
DESIGN: SCALE PROJECT NO. SHEET
DRA%%74: DATE OF
CHECKED:
8.1.5 Contact Information — Contact information for City Project Manager,
DigTess, electric, gas, and communication utilities shall be included in the
City Standard General Notes as set forth in the City's Standard Construction
Specifications and Details. Provide contact phone numbers for any other
entities affected by the project such as Texas Department of Transportation
(TxDOT), Railroad, etc., as necessary.
8.1.6 Use Fort Worth standard symbols and abbreviations. Refer to Section 8.3
(Water and Wastewater Main Plan and Profile Sheet Requirements) and
Section 8.4 (Standard Abbreviations) for standard abbreviation and drafting
symbols.
8.1.7 Benchmarks — Show the location of all benchmarks (permanent or temporary)
on the plan layout sheets.
8.1.7.1 Describe the location of the nearest permanent benchmark and show
identify if the on -site benchmarks are temporary.
8.1.7.2 Provide a minimum of 2 survey control points for each line segment.
8.1.8 Include a copy of the recorded (or proposed) Final Plat of the project area in
the drawings.
8.1.9 Provide a legend, scale, north arrow, and Tarrant Appraisal District map
number on each sheet.
8.1.10 Each sheet shall be sealed by a Licensed Professional Engineer in the State of
Texas and include the engineering firm name and registration number, in
accordance with the Texas Board of Professional Engineers (TBPE) Board
Rules §137.33 and §137.77.
REQUIREMENTS FOR DRAWINGS 139 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
8.1.11 Layout Sheet Requirements
8.1.11.1 Layout sheets shall sufficiently show the entire scope of the project
including fire hydrant coverage, main connections, isolation valves,
wastewater flow direction in the project area, and bypass pumping
operations, as necessary.
8.1.11.2 Provide separate layout sheets for all water and wastewater
improvements.
8.1.11.3 Include the following layout sheets, as appropriate for the project:
• Sheet Index and General Notes;
• Control Point Layout (if applicable);
• Existing Water Main Layout;
• Existing Wastewater Main Layout;
• Proposed Water Main Layout (include Water Study number, if
applicable; can be included on Proposed Water Main Layout
sheet for development projects);
• Proposed Wastewater Main Layout (include Wastewater Study
number, if applicable; can be included on Proposed Wastewater
Main Layout sheet for development projects);
• Water Main Abandonment Layout (can be included on Proposed
Water Main Layout sheet for development projects);
• Wastewater Main Abandonment Layout (can be included on
Proposed Wastewater Main Layout sheet for development
projects);
• Existing and Proposed Easements with recording information (if
applicable);
• Wastewater Bypass Pumping (if applicable); and/or,
• Water Main Shutdown and Construction Sequence (if
applicable).
8.2 SURVEY REQUIREMENTS
8.2.1 Horizontal and Vertical Control
8.2.1.1 Horizontal Control Datum — North American Datum of 1983
(NAD83) as defined by National Geodetic Survey (NGS)
• North Central Zone coordinates for City of Fort Worth, Texas.
REQUIREMENTS FOR DRAWINGS 140 MAY 2019
ORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
8.2.1.2 Vertical Control Datum — Existing City of Fort Worth vertical datum
(NAVD88), as defined by NGS.
• Set temporary benchmarks at a minimum of every 1,000 linear
feet for construction.
8.2.2 Survey the proposed main location, along with such alternate locations, to
include the following:
8.2.2.1 Baseline/route surveys showing relation between property corners and
proposed water/wastewater main centerline.
• Provide sufficient detail to properly locate the proposed main on
the preliminary plan sheet and to determine the number of
properties involved for securing the necessary right-of-way a-nd
easements.
• For existing water mains and appurtenances, provide survey of
topographic features such as existing water meters, water val ie
covers, vaults, lids, blow off valve manhole rim elevations.
• For existing wastewater mains and appurtenances, survey of
topographic features such as existing wastewater manhole rir
elevations, junction structures.
• Provide survey for any other pertinent topographic features such
as, but not limited to: property corners, buildings/structures,
pavement type, driveways, road signs, signal poles and boxes,
franchise or other utility appurtenances, channels, outfall
structures, culverts, storm drain inlet/manhole rims, storm drain
junction structures, trees, fences, and gates.
8.2.2.2 Width Limits of Survey — The width of a typical topographic surve}�
shall be as follows:
• Alignments outside of City right-of-way — 10 feet beyond
required easement width in accordance with Section 3 (Standard
Easements).
• Alignments within City right-of-way — 10 feet beyond the right-
of-way width.
8.2.2.3 Profile survey showing:
• Field -determined elevation of any existing manhole invert, stub,
or wastewater main to which the proposed wastewater lines is to
connect.
REQUIREMENTS FOR DRAWINGS 1 4 1 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
o Provide existing manhole and wastewater main
material/size.
• Top of nut elevation for existing water valves, and water main
elevation to which the proposed water main is to connect.
• Elevation of crossings for water mains, wastewater mains, or any
other utility crossing.
• Elevation of the ground at centerline of the proposed main at
each station, half station and/or ground break.
• For wastewater mains outside of right-of-way provide ground
elevations 100 feet left and right of centerline at each station.
• Elevation at any draw, creek, depression, pond, lake or water
course within any portion of the centerline at intervals not to
exceed 10 feet, with proper reference made as to location with
respect to centerline.
• Survey for wastewater services — As appropriate elevation of
service stub- out of each existing house or building to be served
directly by the main.
o In case service stub is not available, finish floor or basement
elevation should be shown at the front and back of the
house.
o Care should be taken to properly locate the existing house
and points of elevation taken with relation to centerline.
8.3 WATER AND WASTEWATER MAIN PLAN AND PROFILE SHEET
REQUIREMENTS
8.3.1 General
8.3.1.1 All mains requiring plan and profile drawings shall be shown within a
combined plan and profile drawing with the plan sheet at the top half
of the sheet and the profile view at the bottom half of the sheet.
• Water and wastewater main plan and profile sheets may not be
combined on the same sheet.
8.3.1.2 All water and wastewater sheets shall include the Water/Wastewater
Study Number, if applicable.
8.3.1.3 Stationing in the plan and profile drawings should align together at
the left of the page.
REQUIREMENTS FOR DRAWINGS 142 MAY 2019
FORT NORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
8.3.1.4 Identify the following existing and proposed features in the plan apd
profile view:
• Trees, landscaping;
• Monuments, signs, street lights, signals, signal boxes, etc;
• Utilities and appurtenances such as, but not limited to, water
mains, wastewater mains, storm drains, gas lines, undergrou d
cables, electric, telecommunication wires, poles, meter boxet,
vaults, valves, manholes;
• Pavement, access roads, curbs, gutters, driveways;
• Label street names, right-of-way and pavement widths, types of
surfacing;
• Structures, railroad tracks, buildings;
• 100-year floodplain and floodway;
• Rivers, levees; and/or,
• Right-of-way, easements
8.3.1.5 Locate any applicable approved design of proposed construction
which may be pertinent to the design of the project.
8.3.1.6 Texas coordinate system information shall be provided in addition to
stationing on plan or profile sheet, as appropriate.
8.3.1.7 Contour lines on a minimum basis of 2-foot intervals should be
included as necessary for clarification of design.
8.3.1.8 Include "Warning to the Contractor" note requiring the location of
any utilities 48 hours prior to any execution on each sheet.
• Provide caution notes for overhead and underground utilities.
8.3.1.9 Include notes to reconstruct any driveways, sidewalks, ramps, parking
lots, fences, etc. affected by design.
8.3.1.10 Provide notes pertinent to connections with existing water and
wastewater mains.
8.3.1.11 Label the proposed surface repair for each disturbed area.
8.3.1.12 Bold all proposed mains, appurtenances, and service lines.
8.3.1.13 For existing mains, label the main size and material. Include flow
direction for all wastewater mains.
REQUIREMENTS FOR DRAWINGS 143 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
8.3.1.14 Auger Boring and Hand Tunneling
• Label the size of steel casing or tunnel liner plate and reference
appropriate specifications and details in accordance with the
City's Standard Construction Specifications and Details.
• Include stationing callout for each beginning and end of the bore
in the plan and profile view.
• Show the location of bore pits (launching and receiving) and
dimensions on the plan view.
8.3.1.15 Utility Crossings
• Include all existing utility crossings on the proposed water and
wastewater main profiles.
• For water mains that are required to be lowered to cross beneath
storm drain or wastewater mains, reference City's Standard
Water Line Lowering Detail on the plan view drawing in
accordance with the City's Standard Construction Specification
and Details.
8.3.1.16 Dimension distance from the centerline of the main to the right-of-
way or easement line.
8.3.1.17 For urban infill/redevelopment or Capital Improvement Projects
(CIP), dimension water/wastewater services from the property line, or
provide stationing.
8.3.1.18 Delineate the portion of work that is public and the portion that is
private, when applicable.
8.3.1.19 Main Connections — Label the existing main with the City Project
Number, "X" Number, size, and material at the point of connection.
8.3.1.20 Show surrounding property owners information, including public
access easements and ownership.
8.3.1.21 Show and label TxDOT and railroad right-of-way, if applicable
8.3.2 Water Main and Service Lines — Plan Sheets
8.3.2.1 Show individual stationing for all water appurtenances (fittings,
valves, fire hydrants, services, blow off valves, air release valves,
flushing devices, meters, etc.).
• Stationing shall start at 0+00 for proposed mains.
REQUIREMENTS FOR DRAWINGS 144 MAY 2019
ORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
8.3.2.2 For mains less than 12 inches that are not profiled, call out the
clearance required between the top of water main and bottom of a 1
utility crossings.
• The City's Standard Water Line Lowering Detail should be
completed and included in the drawings for any proposed
crossings beneath storm drain or wastewater mains.
8.3.2.3 Curve Data — Curve data (if applicable) shall be provided including,
but not limited to, stationing, point of curvature, point of tangency,
and radius.
8.3.2.4 Label water meters larger than 2-inch with the meter size and the ripe
(domestic, irrigation, or fire).
8.3.2.5 Show and call out all existing and proposed (by others) backflow
preventers/double detector check valves.
8.3.2.6 Pressure Planes
• For water mains located within a pressure plane that it is not
serving, label the water main with its appropriate pressure plane.
• Identify any existing or proposed pressure plane valve, including
the appropriate symbol.
o Include a note on the drawings that all proposed pressure
plane valves shall remain closed at all times.
• Show pressure plane boundaries, as appropriate.
8.3.2.7 Bends — Call out all bends with standard manufactured fittings and
note deflection angle in degrees.
8.3.2.8 Cleaning Wyes
• Indicate cleaning wyes required and show the location with the
station number.
• Indicate the station number where poly pigs are inserted and
removed to verify location of additional fittings required.
8.3.2.9 Service Lines
• Show locations of all existing and proposed services (domestic,
fire, irrigation).
• Show the number of services and the type installed and/or
replaced on each sheet.
REQUIREMENTS FOR DRAWINGS 145 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
• Multiple domestic, or irrigation services lines within a small area
shall be shown in a separate, enlarged detail for clarity.
8.3.2.10 Water Main Connections — Show the existing water system within the
immediate area to show how new mains will connect to the existing.
• Call out the type of connection proposed for the installation,
such as remove plug and connect, cut -in tee, tapping sleeve and
valve, etc.
• Include existing main information such as shop drawing
information (if applicable).
• Label any meters required to be abandoned as part of the project.
• Show and label all existing fire line services that will be
impacted during shutdown for main connection.
• Show, or note, location of isolation valves on existing mains.
• Review shut -out limits to determine extent of property owner
notification required. Include appraisal district addresses for
affected property owners.
o If temporary water services will be required for
construction, show or note the limits of the temporary
services and include references to the applicable City
Standard Construction Specifications and Details.
8.3.3 Water Main — Profile Sheets
8.3.3.1 A profile is required for all water mains 12-inch, or larger.
• Profiles are required for 8-inch, or smaller, water mains, 4-inch
and larger water meter service lines, and long water services
when any of the following circumstances exist:
o crossing congested corridors;
o creek crossings;
o by other than open cut crossings;
o gas line crossings; and/or,
0 other circumstances requiring special design considerations.
8.3.3.2 Call out beginning and end stationing for water main.
8.3.3.3 Provide stationing and show all gate valves, air release valves, blow -
off valve outlet, vaults, fittings, and grade changes. References should
REQUIREMENTS FOR DRAWINGS 146 MAY 2019
14
i'ORT W4� RTH_ CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
be included for each appurtenance to its respective City Standard
Construction Detail.
8.3.3.4 Show percent grade and top of pipe elevations for existing and
proposed mains.
8.3.3.5 Show water valve vaults for mains 16-inch or larger and ensure that
all gate valves are placed on a level grade.
8.3.3.6 Label and show all utility crossings.
• Show outside diameter for any existing or proposed storm in
crossing.
8.3.3.7 Profile all water mains crossing channels, creeks, rivers, detention
ponds, etc., regardless of size.
• Label encasement, casing, rip rap, channels, creeks, or detent�on
ponds.
8.3.4 Wastewater Main and Service Lines — Plan Sheets
8.3.4.1 Show individual stationing for all wastewater appurtenances
(manholes, junction structures, air release valves, flushing device
connections, wastewater access devices, etc.).
8.3.4.2 Main Stationing
• Station wastewater mains beginning at 0+00 from downstream
to upstream. If continuing an existing wastewater main, use the
existing main end stationing as the beginning station.
o Stationing should read from left to right on the plan sheet
and be from downstream to upstream.
• Existing stationing on relocations and rehabilitations shall be
used when intercepting the existing line.
• Existing wastewater main stations shall be shown at the point of
connection.
8.3.4.3 Flow direction arrows should be shown for all wastewater mains.
8.3.4.4 Service Lines
• Existing wastewater service lines that are relocated shall include
a service relocation plan, including cutting and plugging existing
services, if required.
REQUIREMENTS FOR DRAWINGS 147 MAY 2019
FOR WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Wastewater service lines shown on wastewater mains must have
wastewater main stationing or dimensions from the property
line.
8.3.4.5 Label and provided stationing for all manholes and junction
structures.
Include reference to City Standard Construction Specifications
and Details for manhole lining requirements, if applicable.
8.3.4.6 If a water main flushing device contains a direct connection to a
sewer manhole, the connection should be labeled on the wastewater
main plan view.
8.3.5 Wastewater Main — Profile Sheets
8.3.5.1 Profile all wastewater mains.
• Profiles are required for wastewater service lines crossing
congested corridors, or gas lines, requiring special design
considerations.
8.3.5.2 Profile from the left to right from the lowest flow line to the highest
flow line elevation.
8.3.5.3 For 12-inch mains and larger, indicate the capacity, in millions of
gallons per day, required and provided.
8.3.5.4 Identify manholes by station and line designation. Provide rim
elevations. Show the flowline in and flowline out for manhole inverts,
and reference Section 6.9 (Manholes) and City Standard Construction
Specifications and Details for manhole lining requirements, if
applicable.
For manholes constructed within pavement, provide ± rim
elevations and provide a note that the contractor is responsible
for matching the rim elevation to the existing/proposed
pavement surface.
8.3.5.5 Profiles shall show parallel storm drain facilities.
8.3.5.6 Profiles shall show all water main, storm drain, and/or utility
crossings and the separation from the wastewater main.
8.3.5.7 Call out any special or unusual backfill or embedment such as
concrete encasement, select fill, cement stabilized sand (CSS), or
controlled low strength material (CLSM).
8.3.5.8 Show proposed footings, retaining walls, piers, etc.
REQUIREMENTS FOR DRAWINGS 148 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
8.3.5.9 Show datum elevations, as necessary for clarification.
8.3.5.10 Call out floodplain,100-year water surface elevations, and floodway
(if applicable) on the profile.
• Show the high and low banks of creeks, if nearby.
8.3.6 Water and Wastewater Details
8.3.6.1 Show all applicable standard details in accordance with the City
Standard Construction Details.
8.3.6.2 Provide a typical utility location and typical lot service detail, if
applicable.
8.3.6.3 Provide a detail for any non-standard installations such as specialized
junction structures or vaults.
8.3.7 Easements
8.3.7.1 Show and label existing and proposed easements.
8.3.7.2 Identify any areas where encroachment agreements are required.
8.3.7.3 Show and label adjacent city limit boundaries.
8.3.7.4 Delineate temporary construction and permanent easements on the
drawings.
• Include the affected property owner's name and easement
reference designation.
• Include copies of executed easements in the Appendix of the
Project Manual as part of the Special Conditions of the City's
Standard Construction Specifications.
8.3.7.5 When crossing private property, show the easement and property
owner.
8.3.7.6 Call out easements for any lines under future pavement.
8.3.7.7 Easement Recording Information — Recording information for any
easements obtained for the project should be included in the drawings.
If not recorded prior to issuance of construction drawings, easement
recording information should be included on the record drawings
provided to the City prior to Final Inspection in accordance with the
City's Standard Construction Specifications.
REQUIREMENTS FOR DRAWINGS 149 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION
POLICY AND DESIGN CRITERIA
8.4
STANDARD ABBREVIATIONS
STANDARD ABBREVIATIONS
L
ANGLE
LF
LINEAR FOOT
A
DELTA ANGLE
MH
MANHOLE
ARV
AIR RELEASE VALVE
MAX
MAXGMUM
AC
ASBESTOS - CEMENT
MJ
MECHANICAL JOINT
AFD
AUTOMATIC FLUSHING DEVICE
MIN
MINIMUM
ARV
AIR RELEASE VALVE
OHE
OVERHEAD ELECTRIC CABLE
BO
BLOW OFF
OHT
OVERHEAD TELEPHONE CABLE
BFV
BUTTERFLY VALVE
PE
PLAIN END
Cl
I CAST IRON
PCC
I POINT OF COMPOUND CURVE
CL
I CENTERLINE
PC
I POINT OF CURVE
I CONC
I CONCRETE
PRC
I POINT OF REVERSE CURVE
DM
I DEAD MAN
PT
I POINT OF TANGENCY
DI
I DUCTILE IRON
PP
I POLYPROPYLENE PLASTIC
ESMT
I EASEMENT
PVC
I POLYVINYL CHLORIDE PLASTIC
ELEV
I ELEVATION
PP
I POWER POLE
FRP
I FIBERGLASS REINFORCED PIPE
RC
I PRE -CAST REINFORCED CONCRETE
FOC
( FIBER OPTIC COMPONENTS
PPV
I PRESSURE PLANE VALVE
FH
FIRE HYDRANT
RCCP
PRE -STRESSED CONCRETE CYLINDER
(C-301)
(C-301)
FL
FIRE LINE
RCCP
PRE -STRESSED CONCRETE CYLINDER
(C-303)
(C-303)
FLG
FLANGE
R
RADIUS
FL
I FLOWLINE
RCW
I RECLAIMED WATER
GKT
I GASKET
RT
I RIGHT
G
I GAS LINE
ROW
I RIGHT OF WAY
GM
I GAS METER
SS
I SANITARY SEWER
GV
I GATE VALVE
STA
I STATION j
GCD
GENERAL CONTRACT
SD
STORM DRAIN
DOCUMENTS
GP
GRINDERPUMP
T
TANGENT
GL
GROUND LINE
UE
UNDERGROUND ELECTRIC CABLE
HDPE
HIGH DENSITY POLYETHYLENE
UT
UNDERGROUND TELEPHONE CABLE
HORIZ
HORIZONTAL
VERT
VERTICAL
IAW
IN ACCORDANCE WITH
VCS
VITRIFIED CLAY (EXTRA STRENGTH)
LAB
IN ALLEY BETWEEN "STREET"
VC
VITRIFIED CLAY (STANDARD
AND "STREET"
STRENGTH)
IEB
IN EASEMENT BETWEEN
WAD
WASTEWATER ACCESS DEVICE
"STREET" AND "STREET"
IP
IRON PIN/PIPE
W
WATER
IPF
IRON PIN/ROD FOUND
WM
WATER METER
IPS
IRON PIN/ROD SET
WSS
WATER SAMPLE STATION
LT
I LEFT
REQUIREMENTS FOR DRAWINGS I S0 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
""T�r
8.5 STANDARD DRAFTING SYMBOLS
GENERAL DRAFTING SYMBOLS
EXISTING
BENCHMARK
BLOCK LINE
CENTERLINE
CITY OR HIGHWAY MONUMENT
CONCRETE CULVERT (RCCP)
CONCRETE CURB AND GUTTER
CONCRETE DRIVEWAY AND SIDEWALK
CONCRETE INLET AND SIZE
CREEK
EASEMENT
EDGE OF PAVEMENT
FENCE (BARBED)
FENCE (CHAIN LINK)
FENCE (OTHER)
FENCE (WOOD)
GAS LINE
CITY MON #6179
PROPOSED
HWY MON #6179
r
•
a
a
r
G
G
REQUIREMENTS FOR DRAWINGS 151 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
GEOTECHNICAL BORING LOCATION
GUY WIRE
IRON PIN/ROD AND SIZE
LOT LINE
UTILITY METERS
OVERHEAD ELECTRIC CABLE
OVERHEAD TELEPHONE CABLE
POWER POLE
STORM DRAIN
SURVEY LINE
UNDERGROUND ELECTRIC CABLE
UNDERGROUND TELEPHONE
CABLE
GENERAL DRAFTING SYMBOLS
EXISTING
V
07
X' 1p
E E
T T
Un
UT
UE
UT
PROPOSED
REQUIREMENTS FOR DRAWINGS 152 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
WATER AND WASTEWATER DRAFTING SYMBOLS - PLAN VIEW
BLOW OFF AND SIZE NTH
SUMP MANHOLE
BUTTERFLY VALVE
CHECK VALVE
CLEANING WYE
CLOSURE SECTION
COMBINATION AIR RELEASE
VALVE AND ACCESS MANHOLE
COMBINATION AIR RELEASE
VALVE AND SIZE
CRADLE BLOCKING
FIRE HYDRANT
GATE VALVE
GATE VALVE
(16—INCH AND LARGER)
HORIZONTAL BLOCKING
ABANDONED MAIN
EXISTING
Y.
W W—
W ---— W
W -- {---- W
- W W—
x'
W ' A W
x
W--- W
ta' m_0
W-� W
PROPOSED
X.
r I
I�
N
11
REQUIREMENTS FOR DRAWINGS 153 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERI.t
WATER AND WASTEWATER DRAFTING SYMBOLS - PLAN VIEW
EXISTING
PROPOSED
PLUG
- - - ---K
K
REDUCER
W '---'--" W
�
PRESSURE PLANE VALVE
W -- --- W
8
SOLID SLEEVE
STEEL CASING�-
TEST STATION
O
THRUST BLOCKING
VAULT
VERTICAL TIE DOWN BLOCKING
ppCO
Y
CO
T
WASTEWATER CLEANOUT
WW WW
WASTEWATER MAIN
WW WW
WASTEWATER MAIN FLOW
+_ WW WW
ARROW
WASTEWATER MAIN FLOW METER
9WW-MWW
pww-M
WW
WASTEWATER MANHOLE
WW WW
WATER MAIN
W W
WM
ym
WATER METER
W W
REQUIREMENTS FOR DRAWINGS 154 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
WATER AND WASTEWATER DRAFTING SYMBOLS - PROFILE VIEW
EXISTING PROPOSED
BUTTERFLY VALVE �Xl
CHECK VALVE
GATE VALVE
GATE VALVE IN VAULT
X- WATER/
UTILITY CROSSING 0 WASTEWATER
WASTEWATER MAIN FLOW lop.
ARROW
WASTEWATER MAIN FLOW LINE
X- ® X.XX%
X- ® X.XXX
WASTEWATER MANHOLE
I
ii
WATER MAIN AND SIZE I
X-=WA R MAIN
X' PVC WATER MAIN
WATER MANHOLES — ACCESS
MANHOLE AND SUMP MANHOLE
u
C
X
w
WATER MANHOLES — COMBINATION
L
I
AIR VALVE AND ACCESS MANHOLE
1 r
C
,
UTILITY LOCATION BASED ON
I
O
SUE LEVEL A
UTILITY LOCATION BASED ON
Q
SUE LEVEL B
UTILITY LOCATION BASED ON
AR
DRAWINGS
UTILITY LOCATION IS UNKNOWN
O
REQUIREMENTS FOR DRAWINGS 155 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
SECTION 9 - VARIANCE PROCESS
9.1 REQUEST FOR VARIANCE
9.1.1 All requests for variances must be in writing and submitted to the Water
Department with a cover letter accompanied by the Request for Variance
Form included in Section 9.5 (Request for Variance Form).
9.1.1.1 Cover letter shall include all pertinent information on the facilities
involved or to be involved. The request shall state specifically the
portion of the policy or design standards for which a variance is
sought and include a justification for which the variance is requested.
9.1.1.2 Request for Variance Form shall be submitted with the cover letter
and be filled out completely with exception of the portions noted as
"For Use by City".
9.1.2 A grant of an alternative material, design, or method of construction shall not
affect, nor relieve, the Engineer of the obligation and responsibility of such
material, design, or method of construction for the intended purposes.
9.1.3 All variance requests require Water Department Staff recommendation and
Water Department Director approval.
9.2 CRITERIA FOR GRANTING OF VARIANCE
9.2.1 An Engineer who wishes to request a variance regarding the design of public
facilities may do so as long as the request, if granted:
9.2.1.1 Is not detrimental to the public welfare;
9.2.1.2 Does not adversely impact the operations of the system or the public
facility in question;
9.2.1.3 Is supported by a signed and sealed engineering analysis performed
by a Licensed Professional Engineer in the State of Texas, if
requested by the Water Department; and,
9.2.1.4 Is not based solely on financial interests. The burden of proof shall be
on the developer/single property owner to show exceptional hardship.
9.3 ADDITIONAL REQUIREMENTS FOR APPROVAL OF VARIANCE
9.3.1 In the event the Water Department Director determines the variance should
be granted, the Water Department Director may also require:
9.3.1.1 The execution of an indemnity agreement by the developer/single
customer property owner. The form of the indemnity agreement shall
be determined by the Water Department Director, and at a minimum,
shall be recordable so as to run with the property;
VARIANCE PROCESS 156 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
9.3.1.2 A written agreement that the City will not be responsible for any
damages arising out of the granting of the variance. The form of the
agreement shall be determined by the Water Department Director, and
at a minimum, shall be recordable so as to run with the property;
and/or,
9.3.1.3 Such other documents; in the discretion of the Water Department
Director, deemed to be required.
9.4 DEVIATIONS APPROVED BY WATER DEPARTMENT STAFF
9.4.1 This section includes items that are minor deviations from the Design Criteria
and will not require formal approval through the Variance Process. These
items may, at the discretion of Water Department Staff, be allowed to deviate
from the criteria upon approval by Water Department Staff on a project -by -
project basis.
Section Design Criteria
4.2 - Project Process Final decision in determining whether a Loading Analysis or Study will
be required.
Water or wastewater infrastructure that does not qualify for the 4.2 — Project Process Miscellaneous Contract process, may be approved if combined with
infrastructure that does qualify for a Miscellaneous Contract process.
5.3 - Minimum Water 8-inch (ID) water mains may be allowed for some industrial water
Main Size mains.
5.5 - Typical Layouts
5.6 -
Horizontal/Vertical
Alignment and
Clearance
Requirements
5.6 -
Horizontal/Vertical
Alignment and
Clearance
Requirements
Valve locations shall align with projected property lines
In right-of-way sections where the clearance requirements are no
feasible for drainage headwalls and inlets, an alternate alignment for
the water main may be allowed.
Where minimum clearance of 3 feet between franchise utilities and the
main is not feasible, less than minimum clearance may be allowed.
5.9 - Connections to If cut -in tees are determined not to be feasible, a tapping sleeve and
Existing Water Mains valve may be used.
VARIANCE PROCESS 15 7 MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Section Design Criteria
5.10 - Dead End Water Residential cul-de-sac dead-end lines may be allowed to be reduced
Mains down to 4-inch diameter.
5.13 - Gate Valve and
Only approved gate valves will be used in the distribution system for
Butterfly Valve
water mains 24-inch and smaller, unless otherwise approved.
Requirements
5.14 - Cleaning Pigs
Cleaning pig insertion locations and clean -out wyes on the drawings
and Wyes
5.18 - Service Line and
Water Meter
Services within cul-de-sacs shall be placed perpendicular to the main.
Requirements
5.18 - Service Line and
Casing of water service lines due to situations that may jeopardize the
Water Meter
integrity of the service line (i.e. proximity of other utilities).
Requirements
5.22 - Abandonment of
Demolish and remove entire concrete vault and backfill, unless
Water Mains and
determined to be unfeasible.
Appurtenances
6.5 -
HorizontaWertical
Crossings beneath large storm drains or box culverts may require steel
Alignment and
Clearance
casing.
Requirements
6.5 -
HorizontaWertical
In right-of-way sections where the clearance requirements are not
Alignment and
feasible for drainage headwalls and inlets, an alternate alignment for
Clearance
the wastewater main may be allowed.
Requirements
6.5 -
Horizontal/Vertical Where minimum clearance of 3 feet between franchise utilities and the
Alignment and main is not feasible, less than minimum clearance may be allowed.
Clearance
Requirements
Manholes are required at service line connections in situations when
6.8 - Connections to the slope of a service line on public or private property is 5%, or
Existing Wastewater greater. If multiple adjacent service lines result in this scenario, an
Mains alternate solution will need to be developed and discussed for
consideration.
VARIANCE PROCESS 1 � g MAY 2019
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
Section Design Criteria
6.8 - Connections to
Existing Wastewater 4" services into manholes
Mains
Where gasketed manholes are required for more than 3 manholes in a
sequence, a venting method, such as raising the rim a minimum oft
6.9 - Manholes feet (maximum 5 feet) above the 100-year flood plain, shall be
provided on every third manhole. If this cannot be accommodated, an
alternative venting method to minimize inflow, shall be proposed for
review.
6.10 — Special
Requirements for Service line installations requiring a depth of cover less than 36-inches.
Wastewater Service
Lines
6.13 - Inverted Siphons When allowed by the Water Department, all siphons shall be designed
in accordance to the following criteria...
6.20 - Abandonment of Should manhole/structure removal be determined by the Water
Wastewater Mains and Department to be unfeasible due to proximity of other structures or
utilities, the manhole/structure may be abandoned by removing the top
Appurtenances 3 feet of the manhole/structure and filling with acceptable material
6.21— Crossings Concrete Collars for wastewater main crossings shall include a
manhole on each side of the highway crossing.
7.3 - Typical Layout Valve locations shall align with projected property line.
7.4 -
Horizontal/Vertical In right-of-way sections where the clearance requirements are not
Alignment and feasible for drainage headwalls and inlets, an alternate alignment for
Clearance the reclaimed water main may be allowed.
Requirements
7.4 -
Horizontal/Vertical
Alignment and
Clearance
Requirements
7.8 - Gate Valve and
Butterfly Valve
Requirements
8.1 - General Plan
Sheet Requirements
Where minimum clearance of 3 feet between franchise utilities and the
main is not feasible, less than minimum clearance may be allowed.
Only approved gate valves will be used in the distribution system for
reclaimed water mains.
Exceptions to allow for a double scale to show the overall layout more
clearly.
VARIANCE PROCESS 159 MAY 2019
FORT WORTH
au CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
9.5 REQUEST FOR VARIANCE FORM
WATER DEPARTMENT POLICY/DESIGN STANDARDS
REQUEST FOR VARIANCE FORM
TO: Water Department Director
PROJECT NAME/ADDRESS:
PROJECT/STUDY NUMBER: DATE:
We hereby submit for your consideration the following variance request for the above project:
SECTION NUMBER/TITLE SUBSECTION DESCRIPTION
Proposed Variance:
Reason for Variance Request:
Include complete justification for request for variance from Water Department Policy/Design
Standards. Justification request must meet all requirements set forth in Section 9. If justification
is included in the cover letter, or requires additional pages, describe or reference here.
Requested By: For Use by City:
Printed Name Recommended for approval
Signature Recommended for approval with exceptions
Not recommended
Water Department
Firm Staff Recommender
Address Signature
Date Date
Email Remarks
Phone
For Use by City:
Variance Log Number
Approved
Rejected
Signature Date
(Water Department Director)
VARIANCE PROCESS 160 MAY 2019
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
APPENDIX A - WATER AND SEWER STUDY GUIDELINES
APPENDIX A 161 MAY 2019
FORT WORTH
Ir
WATER
WATER & SEWER
STUDY GUIDELINES
Water Department
City of Fort Worth
October 2018
1. General Guidelines
A Water and Sewer Study of the immediate and surrounding area of development is needed to valuate
the adequacy of existing and proposed facilities for present and future needs. This document is eant to
serve as a general guideline for preparing and submitting demand/loading & layout and comprehensive
studies. Every study is unique; therefore, this guide is not designed to incorporate all possible de ign
approaches. An application of sound judgment is necessary in preparing the comprehensive study. A list of
major goals that each study must accomplish is provided below.
Maior Studv Goals:
• Describe the existing conditions and show the proposed facilities
• Calculate the demand/loads expected to be generated by the proposed development
• Demonstrate the impact of the proposed development
• Describe the potential issues associated with the proposed development (if there are any) or
demonstrate that the existing system is not likely to be impacted by the proposed development
• Provide figure (s) and table (s) summarizing the existing conditions, identifying problems (i.e.,
potential issues) and proposed solutions
• Show how adjacent undeveloped properties are not blocked from future access to utilities (Please
referto figures 3-16, 17, 18 of "2018 Installation Policv and Design Criteria for Water. Wastewater,
and Reclaimed Water infrastructure" for more information.
• Provide recommendations for improvements needed to adequately serve the proposed
development
This guide recommends minimum requirements for submitting either a demand/loading & layout or
comprehensive study. Different approaches can be utilized as long as the primary goals of the
demand/loading and study are accomplished. However, required policies and procedures, i.e., design
criteria, are not negotiable and must be used.
The demand/loading & layout and comprehensive studies serve the City of Fort Worth Water Department
as a historical record of the assumptions and analysis methods utilized at the time the proposed
development is submitted. Please be sure to include any and all pertinent information that may not be
known to future readers of this document. The document should be prepared as though the rea0er does
not have any previous knowledge of the development and any associated issues negotiated duri g the
development process.
2
2. Water and Sewer Loading & Layout Map
While this can be requested apart from performing an entire comprehensive water/sewer study, these
figures should be included as part of every comprehensive water/sewer (W/S) study. General guidelines for
preparing a water demand/sewer loading and layout map exhibits are provided below.
Goals:
• Provide overall summary of proposed water and sewer facilities.
DO include:
• Provide Color Coded water and sewer
lines.
• Distinguish existing vs proposed lines.
• Label Diameters, and Streets.
• Include a Vicinity Map with a North Arrow
• Include W/S calculation table.
• PDF format of figures.
DON'T include:
• Extraneous line layers
• Easements
• Non Water/Sewer utility lines
• Storm water lines
• Street center lines
• Contours
• Demonstrate how the proposed system
connects to the existing system.
3
3. Comprehensive Water and Sanitary Sewer Study Submittal
The comprehensive water and sanitary sewer study submittal should consist of the scenario exhibits as
discussed in Section 4 and Section 5. Include clearly labeled calculation result tables for the various
modeling scenarios and an engineering -type report with a cover sheet signed and sealed by a licensed
professional engineer currently licensed in the State of Texas. The study shall be developed as an
engineering report, including narrative, maps, layouts, exhibits, and other materials and should be
submitted digitally as a single PDF document for review. The comprehensive study report should contain
the following additional information:
Hydraulic modeling software used in the analysis of water network, (e.g. InfoWater, Water -Cad,
H2Onet, H2Omap, EPAnet2.0). All water model files should be submitted in (*.inp) format.
• A Map clearly identifying the site location with respect to nearby facilities.
A Site Map for the immediate area of development and the surrounding properties that include the
following.
✓ Topographical Information.
✓ Existing streets and proposed streets.
✓ Pressure plane (and boundaries if more than
one pressure plane is involved).
✓ Drainage area (i.e., area from which
wastewater flows).
✓ Location, alignment and size of the
existing water/sewer that will provide
service to the proposed development.
✓ Legend.
✓ Scale and North arrow.
✓ Show potential sewer connection
points for up gradient adjacent
undeveloped parcels
• Phasing Map identifying immediate and future phases of the proposed development.
• Water and Sewer Study Loading & Layout Map (See Section 2).
The narrative portion of the study report should include the following sections:
➢ Purpose and scope: Provide any necessary background information related to the project.
➢ Design criteria: Describe demand assumptions & site references
o Verifiable citations from the 2018 or currently accepted version of "Installation Policv and
Design Criteria for Water, Wastewater, and Reclaimed Water infrastructure", 2015 or
currently accepted version of the "International Building Code" and currently accepted
version of the "International Fire Code" that specify the type of construction and fire flow
demand.
➢ Hydraulic Analysis: Discuss demand/load calculation, phasing, hydraulic analysis results, and the
impact of the development
➢ Figure(s): Exhibits of various scenarios, model network map (s) and site map(s)
➢ Recommendations: Final pipe size(s), alignments, special features such as pressure reduction
valves, phasing of construction or any other aspect of the proposed development that has direct
bearing on the water and sewer service to the proposed development
29
As a condition of receiving the approval letter, the engineering consultant shall submit the finalized digital
copy of the report (or one bound hard copy) and water model files in (*.inp) format. The submittal should
have (i) legal description of the project name, (ii) project address, (iii) developer/owner's name and (iv)
contact information of the consulting engineering firm that conducted the analysis and PE stamp.
4. Comprehensive Water Study
Assumptions, minimum system requirements for analysis and design criteria are extracted from the 2018
or currently accepted version of "Installation Policv and Design Criteria for Water, Wastewater, and
Reclaimed Water infrastructure for Citv of Fort Worth.
• Please provide water demand calculation and phasing summary tables (see example below)
Table 1. Summary of water demand calculation
Land Average Maximum Maximum Maximum Design
Types of land Population Daily Flow+
areas (persons) Capita factor Daily flow Daily flow Fire flow Hour flow flow
use
(acre)
Residential
3.5
persons per lot
Multifamily
2.5
persons per unit
Commercial/
1
office
person per 400 SF.
School
60-75
students per acre
Industrial
Undeveloped
14
persons per acre
Total
Development data
(based on construction timeline)
Pressure plane
Areas (acres)
Population (persons)
Average daily flow (gpm)
Maximum daily flow (gpm)
Fire flow (gpm)
Design flow (gpm)
(gpm) (gpm) (gpm)
Table 2. Phasing Summary
Year 1 Year 5 Year 10
(gpm) (gpm)
Built Out
5
For conditions or situations not addressed in City of Fort Worth Water Department 2018 Installation Policv
and Design Criteria for Water, Wastewater, and Reclaimed Water infrastructure for Citv of Fort North.
Please either contact City of Fort worth Forth -Water Department (Water Planning, Strategic Developments
and Asset Management Section) or refer to Title 30 Texas Administrative Code, Chapter 290 for rules
regarding PUBLIC WATER SYSTEMS or 30 Texas Administrative Code, Chapter 217 for rules regarding
DESIGN CRITERIA FOR DOMESTIC WASTEWATER SYSTEMS of the Texas Commission on Environmental
Quality rules and regulations. These rules can be found at httiDs://www.tceci.texas.gov/rules/indxr)df.html.
4.1 Water Model Basics
The water model was developed and is maintained using the Innovyze Infowater software. A separate
pressure plane specific model has been developed for each major service area (Northside, South ide,
Westside, etc), which includes all the sub pressure planes as well. For example, the Northside wafer model
includes Northside 2, 3, 4, and 5. The South side model includes Southside 2, 3, and 4. This is provided to
make it easier to analyze developments that may be on the border of two pressure plane boundaries.
Models between major pressure planes are not available.
Request the pressure plane specific water model from Fort Worth Water Department. Contact
W PDPfortworthtexas.gov
Existing model demands are Max Day Demands. Insert the proposed node demands as Maximum Day
Demands. Apply the pressure plane specific demand pattern provided or other commercial/industrial
specific pattern.
III. Study for Phased Development: As for large development with multiple phase construction, water and
sewer study requirements should meet the minimum standards for each phase of constructic n.
IV. Fire Flow duration: Typically set to 3 hours having the value closest to 1.0 at diurnal curve as the 211
hour.
V. Please include a copy of the diurnal curve pattern for specific pressure plane and Fire Flow pattern in
the report.
4.2 Modeling Scenarios, Analvsis and Exhibits
The exhibits listed below are a minimum requirement for water comprehensive studies. Additional
mapping may be required to demonstrate that the study objectives (discussed in Section 1) are met. DO
NOT provide all data from modeling results that encompasses every node and pipe in the provided in the
modelled system. Instead, you should provide a data summary in a tabular format if necessary. The data in
the summary table should also be displayed in figure form. The maximum figure size should be 11 X 17. Use
different colors for pipes, nodes and texts and label them clearly.
2
4.2.1 Simulation #1— Base Condition: Maximum Dav Demand with Existing Development
• Run the existing model, and display results for all nodes and pipes in Exhibit 1.
• Provide Pipe and Node I.D.'s legibly on this map. Display the results for all the nodes and pipes in Exhibit
1 for the minimum pressure experienced in the area being developed.
• The existing system network map (i.e., Exhibit 1, Existing Water System Network Map) should include
the project area and an appropriate radius around the project (typically 0.1 to 0.5 mile). For example,
draw a 0.1 mile radius if the project is in or near a developed area. Draw at least a 0.5 mile radius
around the project if the project is located in a rural area.
4.2.2 Simulation #2: Maximum Dav Demand with Proposed Development
• Add the Maximum Day Demands of the proposed system to the existing model.
• Assign the diurnal pattern to the proposed demands from the diurnal curve that corresponds to the
appropriate pressure plane of the proposed development or other commercial/industrial specific
pattern.
• Adjust the proposed pipe sizes to eliminate any low pressure (lower than 40 psi), head loss above 5
ft/1000 ft, and velocity above 5 ft/s (for pipes 12-inches and smaller) and head loss above 7 ft/1000 ft,
and velocity above 7 ft/s (for pipes 16-inches and larger).
• Run the model and analyze results. Report the minimum pressure, maximum velocity, and head loss
obtained compared to 2018 Installation Policv and Design Criteria for Water, Wastewater, and
Reclaimed Water infrastructure for City of Fort Worth.
➢ Display minimum system pressure during 24 hours for all nodes in an exhibit including node
Identification No. and corresponding pressure (i.e., Exhibit 2a).
➢ Display maximum velocitv and head loss during 24 hours for all pipes in an exhibit including pipe
Identification No., corresponding pipe sizes, and corresponding velocity and head loss (i.e., Exhibit
2b).
4.2.3 Simulation #3: Maximum Dav + Fire Flow Demand with Proposed Development
• Simulation #3 extend the work that was done in simulation #2. In the second simulation, the node with
the lowest pressure (typically the highest elevation) should be selected within the development. This
node is taken as the critical fire node and should be used as the fire node to which the fire flow demand
is applied.
• Assign the Fire Flow pattern to the proposed Fire Flow Demand applied to the fire node. Fire Flow
duration is typically set to 3 hours having the value closest to 1.0 at diurnal pattern as the 2"d hour.
• Adjust the proposed pipe sizes to eliminate any low pressure (lower than 20 psi) and velocity above 10
ft/s in all pipes.
• For fire flow analysis, prepare mapping that shows the available pressure at each node and pipe velocity
during the fire flow analysis with the full fire flow demand applied.
• Run the model and analyze results. Report the minimum pressure and maximum velocity obtained
compared to 2018 Installation Policv and Design Criteria for Water, Wastewater. and Reclaimed Water
infrastructure for City of Fort Worth.
7
➢ Display minimum system pressure during 24 hours for all nodes in an exhibit including node
Identification No. and corresponding pressure (i.e., Exhibit 3a).
➢ Display maximum velocity during 24 hours for all pipes in an exhibit including pipe Identification
No., corresponding pipe size, and corresponding velocity (i.e., Exhibit 3b).
5. Comprehensive Sewer Study
Assumptions and minimum system requirements for analysis and design criteria are extracted from 2018
Installation Policy and Design Criteria for Water. Wastewater, and Reclaimed Water infrastructure for City
of Fort Worth.
• Provide sewer load calculation and phasing summary table for existing, proposed and ultimate (if
applicable) conditions (i.e., Table 1)
Tables 1. Sewer development projections in different phases
Dwelling
of Sanitary
Size of Units/ Population Average Peaking Peak
Sub -Basin ID Total Sewer Main
Basin Acres Served Flow Factor Flow
Flow ID
(acres) (capita) (gpm) I (gpm)
Phase #
f
Onsite Total
Upstream
(off -site)*
Region Total
* Off -site area is not part of the development, but its sewerflow is upstream of the proposed development
Table 2. Sewer modeling results summary
Beginning Ending Sewer Sub -Basin Served Cumulative Cumulative
Design Design Main ID Sub -basins Basin Size
Point Point Served
Beginning Sewer Cumulative Average Peaking
— Ending Main Population Flow Factor
Design ID
Point
(capita) (gpm)
8
(acres)
Peak Proposed Proposed
Flow Pipe Size Slope
(gpm) (inches) (%)
Sewer Study includes domestic, industrial, or commercial sewer load (gpm) forth proposed area of
development and the surrounding properties.
Sewer Study Includes total flow summaries for the overall development by sub -basin for any
existing/proposed/ultimate flows.
Display design points, sewer lines and corresponding slopes in an exhibit (i.e., Exhibit 1).
6. Conclusion and Recommendations
Discuss and summarize the results and findings. Propose the final pipe sizes, system deficiency, water and sewer
system improvements (Pump stations, Lift stations, etc.) and requirements for developments with multiple phase
construction, if applicable.
Water and Sewer Study Submission
Water Planning, Strategic Developments and Asset Management Section
Water Department- City of Fort Worth
200 Texas St.
Fort Worth, Texas 76102-6311
WPDC@fortworthtexas.gov
Reviewing Engineers
Reza Broun PhD, PE (Reza.Broun@fortworthtexas.gov 817-392-8073)
Mark Wilson PE (Mark.Wilson2@fortworthtexas.gov 817-392-6529)
Z
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
APPENDIX B - TYPICAL LAYOUTS
APPENDIX B 171 MAY 2019
° ( c ( I NOTE: FOR GREATER THAN
36" STORM DRAIN,
COLLABORATIVE APPROVAL
FROM T/PW AND WATER
- ° - 50' ROW DEPARTMENTS MUST BE
i OBTAINED FOR THE WATER
29 0' MAIN TO REMAIN WITHIN
_ THE PAVEMENT. OTHERWISE,
4.5' B WATER MAIN SHALL BE
PLACED IN THE PARKWAY A
f DISTANCE OF 5' FROM THE
5.0' I 0.5' ° I NINETM OR EAST PROPERTY
7.0' a 7.0'
1111Y �q
Z j
I I SIGN/SIGNAL
BOX I
LOT Q E LOT
-- 2.0' � 1.0
'CO l 0 I !CO I`
LI — ° ,l :: e u — - T aT
-�° 51
A L ��wm
Q of f� �t
w' w w r w w w——
RESIDENTIAL STREET
— ww ww --►— ww ww ww ww —4 ww -- ww me ww f ww
N
°
SIGN/SIGNAL
I _ I BOX
3.0'
o g
LOT co d --- - L-OT ---- - -- - -
co
I
d
I° 7.0
2.5p
° O
I � ° I
j III
FORT WORTH RESIDENTIAL STREET REVISED: May 2019
TYPICAL WATER & WASTEWATER MAIN
AND APPURTENANCE LAYOUT SCALE: 1" = 20'
LEGEND
—w—
WATER MAIN
PUBLIC WATER
SERVICE LINE
PRIVATE WATER
SERVICE LINE
—
WASTEWATER MAIN
WASTEWATER
SERVICE LINE
■
WATER METER
FIRE HYDRANT
00
CLEANOUT
\LOT
LOT
3
--L-0,T—
LOT 2
------- ------LAT-
LOT 1
FORT WORT
LOT 4
i
Ii
LOT
NOTES:
1. RESIDENTIAL SERVICE LINE
LENGTHS EXCEEDING 55'
REQUIRE 100' ROLL OF COPPER
SERVICE LINE. SPLICING IS NOT
PERMITTED.
2. DESIGNER TO MINIMIZE BENDS
ON WATER MAIN.
3. 4" WATER MAIN SHALL NOT
EXCEED 250' IN LENGTH.
4. SERVICES LINES SHALL BE
DESIGNED TO AVOID CONFLICTS
WITH DRIVEWAYS.
I
�
LOTS LOT 5
e
/ LOT 6
8" GATE LOT 7
VALVE
MINIMUM 8"
7.0'� - WATER MAIN
RESIDENTIAL CUL-DE-SAC
TYPICAL WATER & WASTEWATER MAIN
AND APPURTENANCE LAYOUT
REVISED: May 2019
SCALE: 1" = 20'
I NOTES:
1. MANHOLES AND VALVES SHALL
NOT BE LOCATED WITHIN ADA
RAMPS/LANDINGS.
2. ARCHITECTURAL FEATURES OR
STRUCTURES SHALL NOT BE
PLACED WITHIN THE CENTER
ISLAND OF THE ROUNDABOUT.
IF ARCHITECTURAL FEATURES
OR STRUCTURES ARE
PROPOSED, THE
WATER/WASTEWATER MAIN AND I
APPURTENANCE LAYOUT WILL
REQUIRE SPECIAL REVIEW BY I
WATER DEPARTMENT STAFF.
w
0
I
�w w N' / / ,� w—a w�
L
ww �v+
d
a
FORT WORTH
X-"f : w w---
RESIDENTIAL ROUNDABOUT
TYPICAL WATER &WASTEWATER MAIN
AND APPURTENANCE LAYOUT
REVISED: May 2019
SCALE: 1" = 30'
FORT WORTH CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
--�q.o
APPENDIX C - URBAN INFILL EASEMENT EXHIBIT
APPENDIX C 175 MAY 2Q19
BUILDING LINE
f(WITH PIER
FOUNDATION)
FRANCHISE WIDTH VARIES --
14 DEPENDING UPON FRANCHISE
REQUIREMENTS /
PROPOSED 10.0' WASTEWATER
EASEMENT
x
a
Ln
64
EXISTING UP TO 8"
PVC WASTEWATER LINE
li7iTES-'..
1. A VARIANCE IS REQUIRED IF STANDARD ALLEY WIDTH OR
EASEMENT WIDTH REQUIREMENTS CANNOT BE ACCOMODATED
DUE TO EXISTING PHYSICAL CONFLICTS.
2. WASTEWATER LINES SHALL BE WITHIN A DESIGNATED URBAN
INFILL AREA BEING REDEVELOPED.
3. ONLY WASTEWATER LINE SHALL EXIST WITHIN ALLEY.
4. NO UTILITY OR PHYSICAL ENCROACHMENTS SHALL EXIST WITHIN
ALLEY/EASEMENT.
5. BUILDINGS ON EACH SIDE OF UTILITY SHALL CONTAIN DEEP
FOUNDATIONS (NOT SLABS), OR THE BUILDINGS SHALL BE SET
BACK SUCH THAT A MINIMUM HORIZONTAL CLEARANCE FROM
BUILDING TO CENTER LINE OF WASTEWATER LINE IS 7.5'.
6. THE MINIMUM VERTICAL CLEARANCE OF THE EXISTING
ALLEY/EASEMENT WHERE WASTEWATER LINES ARE LOCATED
SHALL BE 18'.
FORT WORTH EASEMENTS FOR EXISTING
WASTEWATER MAINS IN
URBAN INFILL AREAS
REVISED: May 2019
SCALE: 1" = 4'
FORT WORTH
CITY OF FORT WORTH WATER DEPARTMENT INSTALLATION POLICY AND DESIGN CRITERIA
APPENDIX D - SHARED UTILITY EASEMENT EXHIBIT
APPENDIX D 177 MAY 2019
22.0' SHARED UTILITY EASEMENT
12.0' WATER AND 10.0' UTILITY
WASTEWATER EASEMENT I EASEMENT
l
I
I I
I
I I
5.5'
ti 4.0'
�
2.0' I 3.5' 1.5'
f I i
t 5.0' 1
I
ELM
22.0' SHARED UTILITY EASEMENT
�12.0'WATER AND WASTEWATER EASEMENT
I x
WATER PETER I <
LOCATION (TIP)
d
I 1°
I
I
WASTEWATER I
PROPOSED 4-INCH-
CLEUNOUT I
WATER LINE
LOCATION (TYP) I PROPOSEDB IUNE
WASTEWATER
WASTEWATEI (DIP OR PVC SDR 26
CLEANOUT
CLASS 160, PRESSURE
LOCATION (TYP)
1 RATED JOINTS, GREEN)
10.0' UTILITY
EASEMENT
IL ETER
LLOACA�TOMN Y\- I
I (TIP) CONDUIT
3 I GAS
I I
°L----------------�
I
I I
I I
I 1
FORT WORTH
BEnEee�aEmn1s
1. WATER AND WASTEWATER MAINS IN THE SHARED
UTILITY EASEMENTS SHALL NOT BE USED TO SERVE
ADJACENT PROPERTIES BEYOND THE SHARED ACCESS
DEVELOPMENT.
2. THE MINIMUM VERTICAL CLEARANCE OF THE SHARED
U7IUTY AREA WHERE WATER/WASTEWATER MAWS ARE
LOCATED IS 18 FT.
1 TRAFFIC RATED WATER METER UDS AND WASTEWATER
CLEANOUT COVERS ARE REWIRED.
4. NO PARKING IS ALLOWED OVER THE
WATER/WASTEWATER EASEMENT.
5. NO PUBLIC OR PRIVATE STORM DRAINAGE ALLOWED W
PUBLIC WATER AND WASTEWATER EASEMENT.
6. MAXIMUM LENGTH OF STREET IS 150.
7. LOCATION OF FRANCHISE U1IUTIES IS SCHEMATIC.
COORDINATION IS REWIRED WITH ALL AFFECTED
FRANCHISE UTILITIES TO OBTAIN THEIR APPROVAL OF
THE FINAL LAYOUT.
01WA 11"REMENTS
1. A 6-INCH ISOLATION GATE VALVE SHALL BE PROVIDED
AT THE BOUNDARY LINE OF THE SHARED UTILITY
EASEMENT AND THE PUBLIC RIGHT-OF-WAY.
2. 4' MAXIMUM COVER/ 3' MINIMUM COVER
1 NO FIRE LINE CONNECTIONS OR FIRE HYDRANTS CAN
BE LOCATED WTHN THE SHARED UTILITY EASEMENT.
4, MAXIMUM LENGTH OF DEAD END MAINS IS RESTRICTED
TO 150..
S DEAD END MAINS REWIRE AUTO FWSH HYDRANTS
LOCATED OUTSIDE OF THE SHARED UTILITY EASEMENT.
BUT LOCATED WITHIN THE WATER. DRAINAGE. AND
WASTEWATER EASEMENT.
HOA
COMMUNICATION 1. 6.5, MAXIMUM COVER
CONDUIT 2. WASTEWATER MAINS SHALL BE CONSTRUCTED OF PVC
SDR 26 CLASS 160 COLORED GREEN.
3. WASTEWATER MAINS SHALL TERMINATE EITHER WITH A
MANHOLE WASTEWATER ACCESS CHAMBERS MAY ONLY
BE CONSIDERED IN NARROW CORRIDORS WHERE
VEHICULAR ACCESS IS PROHIBITED.
4. THE MINIMUM SLOPE OF WASTEWATER MAINS SHALL BE
0.75x DUE TO SMALL FLOWS.
SHARED UTILITY
EASEMENT - OPTION 1
REVISED: May 2019
SCALE: 1" = 3'
12.0' SHARED UTILJTY EASEMENT
5.0' UTILJTY T20' WATER AND 50' U'h 'TY----{I
E�SEMEFT WAS EASEMENT _ASEIE VT I
guIRALBEGffiE]IEd1T5
1. WATER AND WASTEWATER MAINS N THE SHARED
1 I I I I I I I I AUTILITY EAMENTS DJA EENNTL PRSHALL OPERTIESBEYOND THE SHARED ACCESS
DEVELT.
THE MINIMUM VERTICAL CLEARANCE OF THE SHARED
_ ��I ._�_� R we —I a UTILITY
AREA WHERE WATER/WASTEWATER MAINS ARE
).
11 w LOCATED ISED FT.
TRAFFIC RATWA ER UDS
I I I 3 LOCATED
CLEANOUT COVERS ARE METEREOURIRED. AND WASTEWATER
V I I 4 I 4 I 4. NO PARKING IS ALLOWED OVER THE
S I I WATER/WASTENATER EASEMENT.
S NO PUBOR PRIVATE STORY DRAINAGE ALLOWED IN
T I I i B I i I I i PULIC BLIC WATER AND WASTEWATER EASEMENT.
I.
YAAMUM LENGTH OF STREET IS 150'.
4 I 4 4 I 7. LOCATION OF FRANCHISE UTILITIES IS SCHEMATIC.
COORDINATIgJ IS REWIRED WITH ALL AFFECTED
I I I I I I FRANCHISE UTBJTIES TO OBTAIN THEIR APPROVAL OF
THE FINAL LAYOUT.
I
I 1\ I I I
II 0' `.0 1.5► L 1.5' I 11.5' 1.5 J.0 1.0'I
�"-3.2' 5.5' 3.3' MAIM MAIM REMURREMENTS
i. A 8T INCH ISOLATION GATE VALVE SHALL UT PROVIDED
TY
AT THE T AND
LINE OF THE SHARED UTILITY
EASEMENT AND THE PUBLIC RIGHT—OF—WAY.
2 4' MAKIMUM COVER/ 3' MINIMUM COVER
3. NO FIRE LINE CONNECTIONS OR FIRE HYDRANTS CAN
BE LOCATED WITHIN THE SHARED UTILITY EASEMENT.
.'2.0' SHARED UTILJTY EASEMENT 4,
MA)OMUM LENGTH OF DEAD END MANS IS RESTRICTED
TO 15D'.
5. DEAD END MAINS REWIRE AUTO FLUSH HYDRANTS
�SO UTILITY—f-12.0' WATER AND WASTEWATER EASEMENT 5.0' UTllJTY LOCATED OUTSIDE OF THE SHARED UTILITY EASEMENT,
EASEMENT EASEMENT BUT LOCATED WITHIN THE WATER. DRAINAGE, AND
0.. WASTEWATER EASEMENT.
.. ,"�.'� ' ,, ,;, •�' ..... .. SURFACE TO BE
I 30' 3.0' ' I MAINTAINED BY HOA
x I
21
8.5' MAK REMENM
1. I I IYUY COVER
MUNICAnON
I x I COMMUNICATION 2. WASTEWATER MNNS SHALL BE CONSTRUCTED OF PVC
CONDUIT I 3.5' I a ` �aF a I 3.5' CONDUIT SDR 28 CLASS 160 COLORED GREEN.
3. WASTEWATER MAINS SHALL TERMINATE EITHER WITH A
ELECTRICAL GAS GAS ELECTRICAL
MANHOLE WASTEWATER ACCESS CHAMBERS MAY ONLY
CONDUIT I rp n I CONDUIT BE VEHICULAR
A IN NARROW CORRIDORS WHERE
I = I I VEHICULAR ACCESS 5 PROHIBITED.
WATER METER- I I 4. THE YIDUE T POPE OF WASTEWATER MAINS SHALL BE
I LOCATION (TYP) I I I 0.751< DUE 10 SMALL FLOWS.
ED 4-INCH
I WASTEWATER
PROPOSWATER UNEIELOCATION
ETER I
CLEANWT I WASTEWATER I (TYP) I
LOCATION (TwCLEA ) I NWT I
PROPOSED B-INCH LOCATION (TYP) I I
WASTEWATER LINE
j I (DHP DR PVC SDR60, PRESSURE zs REVISED: Ma 2019
I I RATED JOINTS, ORW) FORTWORTH SHARED UTILITY y
EASEMENT - OPTION 2 SCALE: 1" = 3'
City of Fort Worth, Texas
Mayor and Council Communication
ML_ COUNCIL ACTION: Approved on 6/7/2019 - Resolution No. 5084-05-2019
DATE: Tuesday, May 7, 2019 REFERENCE NO.: G-19537
LOG NAME: 60602019 VWVWRECLAIMDESIGNCRITERIA POLCYUPDATE
SUBJECT:
Adopt Resolution Approving the 2019 Installation Policy and Design Criteria for Water, Wastewater and
Reclaimed Water Infrastructure (ALL COUNCIL DISTRICTS)
RECOMMENDATION:
It is recommended that the City Council adopt the attached resolution approving the 2019 Installation
Policy and Design Criteria for Water, Wastewater and Reclaimed Water Infrastructure.
DISCUSSION:
On August 8, 2017, the City Council approved M&C C-28333 to authorize Kimley-Horn and Associates
Inc., to perform an update to the Installation Policy and Design Criteria for Water, Wastewater and
Reclaimed Water Infrastructure. The last policy update was made in 1999.
As part of this work, Fort Worth's existing water, wastewater, and reclaimed water policy and design
criteria was compared with other large cities in Texas, including Austin, Dallas, and San Antonio. As
changes to the criteria were considered, stakeholders were engaged to vet the changes from the
perspective of the engineering and development community. Because of the extended time period since
the last update, references to the current regulatory standards and state and local requirements were
required. The document also incorporated practices that have been in place for years but were never
clearly documented. Coordination also was required with the concurrent update to.the CFA policy in order
to ensure consistency. Stakeholder review meetings with the Development Advisory Committee (DAC)
Task Force on Urban Infill Development occurred on November 30, 2017, February 5, March 27, April 30
and October 18, 2018. DAC also created a sub -committee of experts for the review of this updated policy
and design criteria. Meetings with the sub -committee occurred on May 8, May 15, May 22, Juq? 6, June
12, June 26, July 10, July 24, July 31, and September 11. The updated policy and design criteria was
presented to the DAC on October 18, 2018,
Major areas of revision incorporated into the new policy and design criteria include the following:
• Combined the installation policy and the design criteria into one document
• Added annexation requirements prior to obtaining water and wastewater service
• Incorporated new criteria of shared utility easements for high density infill development
• Included reclaimed water design criteria
• Formalized the variance process
Staff recommends the City Council approve the 2019 Installation Policy and Design Criteria for Water,
Wastewater and Reclaimed Water Infrastructure, with a recommended effective date of June 1, 2019,
which will align with the CFA Policy Update.
This M&C does not request approval of a contract with a business entity.
Logname: 60602019 WWWRECLAIMDESIGNCRITERIA POLCYUPDATE Page 1 of 2
FISCAL INFORMATION / CERTIFICATION:
The Director of Finance certifies that approval of these recommendations will have no material effect on
City funds.
FUND IDENTIFIERS (FIDs):
TO
Fund! Department Accoun
Project
Program
ctivity
Budget
Reference #
moun
ID
ID
Year
(Chartfield 2)
FROM
Fund Department �ccoun
Project
Program ctivity
C
Budget
Reference # moun
( ID
ID
I
Year
(Chartfield 2)
CERTIFICATIONS:
Submitted for Citv Manaaer's Office bv:
Oriainatina Department Head:
Additional Information Contact:
Jay Chapa (5804)
Chris Harder (5020)
Wendy Chi-Babulal (8242)
Logname: 60602019 WWWRECLAIMDESIGNCRITERIA POLCYUPDATE Page 2.of 2