HomeMy WebLinkAboutOrdinance 6408 t t �
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ORDINANCE NO. �O
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ASSAN ORDINANCE ADOPTING VOLUME II OF THE 1970 UNIFORM BUILDING CODE,
MENDED, REGULATING THE DESIGN, QUALITY OF MATERIALS, CONSTRUCTION,
LOCATION, AND MAINTENANCE OF HEATING AND COMFORT COOLING AND VENTILATING
SYSTEMS IN THE CITY OF FORT WORTH; PROVIDING FOR THE ISSUANCE OF PERMITS
AND THE COLLECTION OF FEES THEREFOR: PROVIDING FOR THE INSPECTION OF
BUILDINGS; PROVIDING PENALTIES FOR THE VILATION THEREOF; PROVIDING A
SAVING AND REPEALING CLAUSE; PROVIDING AN EFFECTIVE DATE AND DIRECTING
PUBLICATION IN PAMPHLET FORM.
WHEREAS, it is deemed necessary to provide minimum standards to
regulate the design, construction, materials, location and maintenance
of heating, comfort cooling, refrigeration, ventilating and exhaust systems
and other miscellaneous Heat Producing appliances within the City to pro-
tect and promote the public safety, health and welfare; and,
WHEREAS, the present Codes are in need of amendments in order to
protect and promote the public safety, health and welfare under modern
conditions; and,
WHEREAS, the Mechanical Code Revision Committee of the City of Fort
Worth has recommended the adoption of Volume II of the 1970 Uniform Build-
ing Code of the International Conference of Building Officials, with certain
amendments; Now, Therefore,
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF FORT WORTH
SECTION 1. 1970 UNIFORM BUILDING CODE ADOPTED. The Plumbing
Code of the City of Fort Worth is hereby revised and amended to
conform to Volume II of the 1970 Uniform Building Co �of the
International Conference of Building Officials, as ame\\nded hereby,
and the same as amended is hereby adopted as the Mechanical Code
of the City of Fort Worth from the effective date hereof. Three
copies of the said Volume II of the 1970 Uniform Building Code
with corrections, marked "Exhibit A," are incorporated herein by
reference and have been filed in the office of the City Secretary
for permanent record and inspection.
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SECTION 2. AMENDMENTS. That Volume II of the 1970 Uniform
Building Code (Exhibit "A") be amended as shown by Exhibit "B"
attached hereto, which amendments are incorporated herein by
reference and shall have been filed in the Office of the City
Secretary for permanent record and inspection.
SECTION 3. PENALTIES FOR VIOLATIONS. It shall be unlawful
for any person to construct, enlarge, alter, repair, move, improve,
convert, equip, use, maintain any heating, comfort cooling, referigera-
tion, ventilating and exhaust, systems and other miscellaneous Heat Pro-
ducing appliances in the City or cause the same to be done, contrary to
or in violation of any of the provisions of this Code.
Any person violating any of the provisions of this Code shall
be deemed guilty of a misdemeanor, and each such person shall be
deemed guilty of a separate offense for each day or portion thereof
during which any violation of any of the provisions of this Code is
committed, continued or permitted, and each violation shall be
punishable by a fine not to exceed $200.00.
SECTION 4. VALIDITY. If any section, subsection, sentence,
clause, or phrase of this Ordinance is, for any reason, held to be
unconstitutional, such decision shall not affect the validity of
the remaining portions of this Ordinance.
SECTION 5. ORDINANCES REPEALED. This Ordinance shall repeal
every prior ordinance in conflict herewith, but only insofar as the
portion of such prior ordinance shall be in conflict.
Mechanical Permits heretofore issued under existing ordinances
shall be valid for the time for which they are issued under the ex-
isting Plumbing Code, but upon expiration thereof, the same shall b e
void.
All pending litigation and existing violations, both civil and
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criminal, whether pending in court or not, undee the Plumbing
Code and amendments thereto superseded by this Ordinance, shall
not be affected by this Ordinance, but may be prosecuted until
final disposition by the courts.
SECTION 6. DIGEST AND REVISION. This Ordinance constitutes
a digest and revision of the Mechanical Code Ordinances of the City
of Fort Worth, Texas, as provided by Section 2, Chapter XXVI and
Section 10, Chapter XXVIII of the Charter of said City, and the
City Secretary is hereby directed to publish this Ordinance in
book or pamphlet form for general distribution among the public
and this Ordinance, as so published in book or pamphlet form,
shall be admissible in evidence as provided in Section 3, Chapter XXVI,
of the Charter.
SECTION 7. WHEN EFFECTIVE. The City Secretary shall cause
to be published the caption as well as Sections 1 through 7 hereof
in the official newspaper of the City for five days. This Ordinance
shall be in full force and effect on and after May 1, 1971, and
it is so ordained.
APPROVED AS TO FORM AND LEGALITY:
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C iFY ATTORNEY
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EXHIBIT "B" EXHIBIT "B"
The following Chapters, Sections, and parts of the 1970 Uniform
Mechanical Code (Exhibit "A") are hereby amended and after having been
so amended shall be and read as follows:
PART I - ADMINISTRATIVE
CHAPTER I - TITLE AND SCOPE
SEC. 101. The Code of the City of Fort Worth (1964), as amended,
is hereby amended by adding thereto a new chapter which shall be desig-
nated as Chapter ___ and may be cited as the Mechanical Code of the
C11v of Poo 41ul.ih and referred to herein as "this code."
SF:i;., 103, The provisions of this Code :;hall apply to the erection,
insir_3:laticn, alitr�rati.on, repair, ivlocation, i:eplacement, addition to,
u6+e, or inai.ntc riauc:, of any heiting, ventilating, comfort cooling, re-
y,go atio,l sy-Aems, incine:aturs or usher n,iscel.laneous heat-producing
sppiianc.-,s_
Al,Y, , in auy r;Pc'chic case, different sections of this Code specify
diLfer,c,t nr,te'l-1::?!;, MuLlieds of cons tnict1.,:u or othz:r requirements, the
The Cnilo;,ll Mecl-adcal Code Standards and Uniform, Building Code
i i Appeudi,; A Snail. be, cuusidcred as part of this
t}.uc
4p,,. „ _ It , 0,I1e,3n3 recyln::;vT° drd I,lu:t;ccs .hich shall not apply.
Appq ,,i- C (.�,utalus i I in „2 .:-corer.,,,-,ndt,d ,.,giiijxnent rAandards and
is 1a1 ,""'c 1,. s,.l jnly as a t;aicle.
,,,'_:C Iu',, llic pro�.i:iion, of this Code are; not intended to prevent
th,.: u"e of ;uly wat�,tial or method cf couslr,,cti.on not specifically
prescri'l by tni:, i.l.; pro ,ded aaY surb ait,rnztc has been approved.
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EXHIBIT "B" EXHIBIT "B"
The following Chapters, Sections, and parts of the 1970 Uniform
Mechanical Code (Exhibit "A") are hereby amended and after having been
so amended shall be and read as follows:
PART I - ADMINISTRATIVE
C1LAP7'ER I - TITLE ACID SCOPE
SEC. 101. The Code of the City of Fort Worth (1964), as amended,
is hereby amended by adding thereto a new chapter which shall be desig-
nated as C!iapter n and may be cited as the Mechanical Code of the
CitN of Fort 1,JorLh and referred to herein as "this code.`
SEC.. 101 The provisions of this Code shall apply to the erection,
in:,[all-ition., alieiaiiun, repair, retocatiun, replacement, addition to,
use, ,rl maa.utonance of any heating, ventilating, comfort cooling, re-
trig,-Iat.iur. s.:truw. in:iuerat,,rs or ut-h:r miscellaneous heat-producing
appliancor .
WWii:•ro, in .)n:, spaciiic case, different sections of this Code specify
,]irfercol m,iLeri.aik, .,methods o: alustructlon or other requirements, the
io s L r,'11. 1.1,t I',-_ „i-I t.� �.)v e r l l.
Th,, ViOi %rm *,(Piaiical Code Standaidr, and Uni.icnn Building Code
,.,,,;ra; l„ c,, „t,lin:.i in Appendix A steal t bc: considered as part of this
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reconanen&A practice.- which shall not apply.
i>rae•,e :: t iJ,itains .i:.t of re0.rm1knd0d �:ptiprnent :standards and
is IN clo: r„ .- -rv, Duly AS ct guida.
:;J�C IO 'ftae provistoais of this Code are not intended to prevent
the usr: of .,,iv mat- .,is l or method of c%nstr;,ct:i.ur. not specifically
prescrir- -1 b , tau ,.dh , _,rc-,idedl any such a ireruato has been approved.
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CHAPTER 2 - ORGANI2:ATION AND ENFORCEMENT
SEC. 201. (a) GENERAL. The Building Official is hereby authorized
and directed to enforce all the provisions of this Code. For such pur-
pose, he shall have the powers of a police officer. For the purpose of
the enforcement of the technical provisions of this Code, the term
Building Official shall mean Chief Mechanical Inspector.
(f) LIABILITY. The Building Official, members of the Board, or any
employee charged with the enforcement of this Code, acting in good faith
and without malice for the jurisdiction in the discharge of his duties,
shall not thereby render himself liable personally and he hereby is re-
lieved from all personal liability for any damage that may accrue to
persons or property as a result of any act required or by reason of any
act or omission in the discharge of his duties. Any suit brought against
the Building Official or employees, because of such act or omission per-
formed by him in the enforcement of any provisions of this Code, shall
be defended by the Legal Department of the City of Fort Worth until final
termination of the proceedings.
(g) On failure of the owner, owner's agent, or the person doing the
work, to comply with a non-conformance order, the Chief Mechanical In-
spector and his duly authorized assistants shall have the authority in
addition to other authority given herein1to give written notice to the
Utility Companies to cut off, or disconnect their respective utility
services, or in any appropriate way, to cause the operation to be dis-
continued until the defects are corrected.
SEC.202. (a) It shall be unlawful for any person, firm or corporation
to erect, install, alter, repair, relocate, add to, replace, use or
maintain heating, comfort cooling, refrigeration, ventilating or ex-
haust systems, incinerators or other miscellaneous heat-producing appli-
ances in the City, or cause the same to be done, contrary to or in
violation of airy of the provisions of this Code. Maintenance of equip-
ment which was unlawful at the time it was installed and which would
be unlawful under this Ordinance if installed after the effective date
of this Ordinance, shall constitute a continuing violation of this Ordi-
nance.
(b) Any person, firm or corporation violating any of the provisions of
this Code shall be deemed guilty of a misdemeanor, and each such person
shall be deemed guilty of a separate offense for each and every day or
portion thereof during which any violation of any of the provisions of
this Code is committed, continued, or permitted, and upon conviction of
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any such violation s„ch per-on -::a;1 be punishable by a fine of not more than
two hundred dollar, ($2001 00).
SEC, 203, (.1) _n order to det etmi,F,_ the suitability of alternate materials
and types of construction dn,, ?:e. prvviJe to: reasonable interpretations of the
provisions of this Coda, there shall be and is hereby created a Mechanical Board,
hereafter referred t_o as th^ iio.ard, consisting of nine members who are qualified
by experience and "wining to pass u-tx;n matters pertaining to mechanical construc-
tion.
(b) Board wemLcrs ,?alI be dppoi.nre1 by the City Manager, by and with the
advice and consent of tlse City Co,;ocil..
(c) The Board shad. consist of:
Place �lifications
1 Citizen not in Building Industry
2 Registered Engineer Contractor
3 Registered Mechanical Engineer
4 Registered Mechanical Engineer
5 Manufacturer Representative
6 Licensed Mechanical Contractor
7 Licensed Air Conditioning Contractor
8 Architect
9 Chief Mechanical_ Inspector, Ex-Officio
(d) The nembers :;ha?i hold oI fire for a term of two (2) years unless re-
lieved for cause prior to that sine.. Meuin:rs in even-numbered places shall be
appointed in even-numbered years. Members in odd-numbered places shall be
7%re e `;appointed in�fo..dd�nummbered years. Members shall not serve more than iwAWV" J
consecutive erf ns.—Fxce}, ition - Chiei: Mechanical Inspector shall serve con-
tinuously. �I
(e) The city Corncii may remove any member of the Board during the term
for which he may be appointed.
(f) Should a vacancy occur, the City Manager, by and with the advice
and consent of the Ciry oaneiJ. shah appoint a person having the prerequisite
qualifications of 1ue pt.� visit%,d r;; fullill the unexpired term of said place.
(g) Any six (0) members of Lhe ;3oard present shall constitute a quorum
to transact business huL nu Oocisaon shall be handed down unless concurred in
by not less than t i v.- ('>) The Chief Mechanical Inspector shall not
vote when the Board i.s .reviowi. it, a decri_si.na made by him. The Board shall hold
meetings at such ra-me and al,(.,, as c•aliod by 'he Chairman or one acting lawfully
in that capacity.
(h) In additio,, a,: 1?a tua;abers .not, out. iu Section 203 (d) of this Code,
the following City Otiicials shall 'ne ex-officio non-voting members of the
Board:
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1. sire Ma—tr-i- ,
2. Director of Health
3. City Attorney
4. Buildin- Offici l
Chie' P),twbio, 1,ispecstor
When requiicd by `hc. B�;aTd, foe c�x-oflicio members shall attend and
furnish necessary :>pecial reports and inspections.
(i) It shall be f ;c d-Ay r,f the Board to meet as soon after their appoint-
ment as is practicabl,. One member shall he elected Chairman and shall serve
as the Pre^,ijlnt; rl.fficer of the Board for a period,, of one (1) year.
(j) The Chici Mechanical InsIx:ctor shall serve as secretary of the Board
and shall perform rhea following, services;
1. Keep the Minutes, Books, Files and other Records of the Board.
2. Issue all Liu-nsec in the name of the Boar,'.
3. Send out atl Notices and attend co all correspondence under the
direction )i t:hc Board.
4. Colle-ct S_ en„e rees pro,rided for in the Ordinance, which shall be
depocited u-itls tiie Bui Lding Official.
5. He shall crr°rform such other duties ar,• are incidental to his office
and as ma, oe reqiiired by the. Board.
(1) The Board shr,l.l hnj< -, the power to make and promulgate its own rules
governir�, its meetiags and proceedings, subject to the provisions of this
Ordinances
Miscell.aa?r•u= office supplies shall he furnished to the Board by the
Building lnslr-ciAeo Dt-g"c'tment.
(m) The Chief Mechanical Inspector shall enforce and execute all decisions
and order of the Boar;'.
SEC. 2011 (a) The bu,ard is hereby authorized to investigate methods, materials,
equipment and aspliar>ecti !o determine their compliance with Section 102. Those
complyine ;hall ht cc.rti_}fed by the Board for the information of the public.
(b) The pow,-rs r•f the Mechanical }Board are hereby extended so as to
authorize the Merhaiic°al- Board to make reasonable interpretations or rulings
in matter: property before it as to Die suitability of alternate materials and/or
methods ref unop. 1-hi^ Chapter, but ,hall not have authority to amend
or suspend the yr(, %i ioria hereof,
SEC '10"', -;ry person, firm, company or corporation aggrieved by any
decision eJ tk- L r ,.7,c+,tical Inspector or Building Official under this
Chapter may appeal ., r.t; Ja J,ion , c .tcd,tea to th•- Mechanical Board as set out
hereia.
(b) Appeals Lc, r°,r. e,;..r? m.rs,_ 1w 01'7v<' i; -,writing within thirty (30) days
from data .>I the de,.j. or•ter , ppea;eO irenu and shall be filed in duplicate
With the dhief notice shall contain appropriate
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reference to the decision or ordci, pnea:.cA is;m as well as the grounds of
the appeal. It shall be t"L. ;,+ _ ttachanical Inspector to notify
the Chairman of the Mechanic:)_ tsu _ 31, filed.
(c) At the time of filinr e.0 =ptA,:, c, appellant shall be required to
pay an appeal fee of Twenty rivc r: lees j:r? 00), which fee shall be returned
to the appellant if the appel_iank. :.._ s , ..-rued
(d) The Chief Mechanical .inn r nl_� t:an.smit to the Mechanical Board
all relevant records and date up)n wbi,'% the appeal was taken.
(e) The Mechanical Board 6hall ii-r, tc:boaable time, not to exceed thirty
(30) days, for the hearing of -in appcal, ;<J,A.ag notice in writing to the parties
in interest and shall reach its decist, ,.LtJn a reasonable time thereafter.
Parties may appear before the Mechai.ieai P,oard in person, by agents, or by
attorney. The Board may require additio..al 3ata and tests necessary for adequate
decision of the appeal.
(f) The Mechanical Board ohvli h.,,. power in all cases appealed to it
from decision or orders of Lbe t:,ri .. r •°r,aai .al inspector to reverse or affirm
or modify in whole or in part, eie d4 .is4:.4 .,r. older appealed from. No deci-
sion of the Board shall vary o, ue, i;{,.,,psis i ;nL with the terms, provisions and
requirements of this Cade.
SEC. 206. The Air Condit:'_)nira, Sj° 1 ss'a forth in Ordinance No. 5325 is
hereby abolished and the Mediae.!,°al "_,._ .r'ci l a.isume its functions and duties.
SEC. 207. It shall bt. the duty WE the,. Board to make an annual review of
the provisions of. this Ordinan=°e and ko r,`Lrnawend any necessary changes and/or
improvements to the City Council,
SEC. 208. Any person holding 1,:.d PTerauiCal Contracting or Air Con-
ditioning Contracting license issued i-y a volittral subdivision may be issued
a six months' temporary license
Only one license shall be iied to an individual per calendar year.
License fees corresponding to the amouuL se[_ forth in Ordinance No. 5325 shall
be paid in full before issuance cr 1'i.en;e.
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CHAPTER .i - PEMITS AND INSPECTION
PERMITS SEC. 302. (a) PERMIT APPLICATION. To obtain a permit, the appli-
cant shall file an application on forms furnished for that purpose.
The application shall contain all information necessary to the lawful
enforcement of the provisions of this Code.
(b) PLANS AND SPECIFICATIONS. For the enforcement of any provi-
sions of this Code, plans and specifications for the installation of
comfort heating systems, comfort cooling systems, absorption systems,
ventilation systems and hoods shall be filed with the Building Official
and approved before the issuance of any permit for the following:
1. Any Group A, B, C, D, or E Occupancy.
2. New buildings having an aggregate floor area including
basements of 15,000 square feet and over.
3. Installations other than those listed in Items 1 and 2 above,
where the aggregate B.t.u. input capacity is 750,000 B.t.u.'s and over
for comfort heating, or an aggregate of over 25 tons for comfort cool-
ing, or an aggregate of over 750,000 B.t.u.'s input capacity for ab-
sorption units.
Plans and specifications shall be prepared and designed by an
engineer licensed by the state to practice as such.
One set of plans and specifications shall be filed for checking
provided that not less than two sets of corrected plans and specifi-
cations are filed before approval is given by the Buildii:: Official.
After approval, one set of plans shall be retained by the Building,
Official and the other set shall be returned to the applicant, which
set shall be kept on such building or work at all times during which
the work authorized is in progress.
(e) Permits for heating, cooling, and refrigeration will be issued
only to holders of valid air conditioning contractors' licenses. Li-
censes are not required to obtain permits for the installation, altera-
tion or repair of duct work, evaporative coolers, ventilation or
exhaust systems.
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PERMIT & SEC. 304. Any per;.on desiring a permit required by'this Code
INSPECTION
FEES shall, at the time of filing an application therefor, pay Permit and
Inspection Fees as required by this section for the installation,
relocation, or replacement of any of the following:
For the issuance of each permit .. . . . . . . .. .. ............. $ 3.00
INSPECTION FEES.
FORCED AIR 1. Forced Air Heating Appliances, including ducts and/or vents
GAS HEATING
APPLIANCES attached thereto:
A. Capacity to and including 80,000 B.t.u. 's input ... $ 3.00
B. Over 100,000 and including 400,000 B.t.u. 's input .. S 5.00
C. Over 400,000 B.t.u. 's input ......... .... .. .. .... .. . $ 7.00
FORCED AIR D. Capacity to and including 20 K.W. ........ .. ........ $ 5.00
ELECTRICAL-
HEATING E. Capacity over 20 K.W. ..................... .. .. .. ... $ 6.00
APPLIANCES
MISCELLANEOUS 2. Gas Wall Heater, including vent ....... .. ........... $ 4.00
HEATING
3. Gas Floor Furnace, including vent .................. $ 4.00
4. Gas Infra Red Heating Unit ... .. .. ...... ...... ...... $ 4.00
5. Electrical Strip Heaters for fan & coil unit ....... $ 1.00
BOILERS, STEAM 6. Each Low or High Pressure Steam or Hot Water Boiler rated in
AND
HOT WATER either B.t.u. 's input or boiler horsepower output:
A. Per 1 ,000 B.t.u. 's input ................. .. ........ $ .04
B. Per Boiler Horsepower output ........ .... ........... $ 1.30
GAS ABSORPTION 7. Each Absorber Unit, Electrical Reciprocating, Centrifugal, or
UNIT, ELECTRICAL
RECIPROCATING, Rotary Unit, each based on its nominal capacity rating.
CENTRIFUGAL
OR ROTARY UNIT A. Up to and including 2 tons .............. ........... $ 3.00
B. Over 2 and including 3 tons .................... .... $ 5.00
C. Over 3 and including 5 tons ............... ......... $ 8.00
D. Over 5 and including 7 1/2 tons .................... $11.00
E. Over 7 1/2 and including 10 tons ................... $14.00
F. Over 10 and including 30 tons, per ton ....... ...... $ 1.30
G. Over 30 and including 100 tons, per ton $ 1.20
H. Over 100 and including 320 tons, per ton ........... $ 1.00
I. Over 320 and including 520 tons, per ton ........... $ .80
J. Over 520 tons, per ton ............... .. ............ $ .60
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ARKLA-TYPE 8. Self-Contained Gas-Fired Indirect Coolinq-Heating Units,
ABSORPTION
UNITS including duct work, drain and vent.
All size units, per ton refrigeration capacity ... .. ..... $ 2.00
ROOF-TOP 9. Each Roof-Top Unit, includina ducts and drain:
LAITS
COOLINC, COOLING &
ONLY HEATING
A. Up to and including 3 tons .. .. .. .. .. $ 5.00 $--TO. 0
B. Over 3 and including 5 tons .. .. .... . $ 8.00 $ 14.00
C. Over 5 and includinq 7 1/2 tons ... .. $ 11 .00 $ 19.00
D. Over 7 1/2 and includina 10 tons .... $ 14.00 $ 22.00
E. Over 10 tons, per ton . ...... ...... .. $ 2.00 $ 2.50
COOLING TOWER 10. Cooling Tower, Evaporative or Air-Cooled Condenser, Tonnage
EVAPORATIVE &
AIR-COOLED based on local design conditions.
CONDENSERS
All size units, per ton refrigeratinq capacity ...... .... $ .50
COOLING- 11. Coolinq-Neatinq Coils.
HEATING
COILS A. Up to 3 ton D.E. or Water Furnace Coil . .. .. .. .. ..... $ 1 .00
B. Over 3 ton D.E. or Water Coil , per ton ......... .. .. . $ 1.00
C. Steam Coil, per 1000 B.t.u. 's .... .. ................. $ 04
FAN AND 12. Direct Expansion, Water or Steam Fan and Coil Units, including
COIL UNITS
drain.
A. Up to and including 3 tons .......................... $ 1 .00
B. Electric Strip Heaters for above Unit .......... ..... $ 1.00
C. Over 3 tons Cooling and/or Coolina and Heatinq Unit,
perton .............. .... .. .. .. ...... .......... ..... $ .50
D. Heating Unit only, Water or Steam, per 1000 B.t.u. 's $ .04
VENTILATORS, 13. For each Mechanical Roof Ventilator ..... ...... ...... $ 3.00
HOODS
VENTILATION 14. For each Commercial Range Hood ......... ............. $ 3.00
AND EXHAUST
SYSTEMS For each H Occupancy Range Hood ........ ...... ....... $ 1,00
15. For each Ventilating System which is not a portion of
a Heating or Air Conditioning System authorized by a
Permit . ....... ... ..... ..... ........ ................. $ 3.00
16. For each Toilet Exhaust Fan and System .............. $ 1.00
17. For each Exhaust Far, connected to a single duct ..... $ 3.00
18. For each Conveyor Exhaust Fan . ...... .............. .. $ 3.00
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19. For the installation of each Range Hood (I Occupancy
exempted) which is served by mechanical exhaust, including the
ducts from such Hood ............................. ........ .... $ 3.00
MISCELLANEOUS 20. For each Appliance or niece of Equipment regulated
by this Code for which no other fee is listed ... .. .. .. ....... $ 3.00
21. For the Third and each followina reinspection of pre-
viously rejected work .. ...................... ................ $ 5.00
22. Each Appliance Vent installed and not included in an
appliance permit ............................... .......... .... $ 3.00
23. Each French Drain .......... .... ........ .. .......... $ 1.00
24. Addition or alteration to an existing Duct System .. $ 3.00
INCINERATOR 25. Any article, machine, equipment or other contrivance de-
signed and used primarily to dispose of combustible refuse by wholly
consuming the material charged leaving only the ashes or residue shall
be assessed on the following schedule of the maximum horizontal inside
cross sectional area, in square feet, of the primary combustion chamber:
AREA, IN SQUARE FEET FEE
(a) up to and including 3 ............ ..... . .... .. S 4.00
(b) greater than 3 but less than 4 .... .. ......... 10.00
(c) 4 or greater but less than 7 . ........ .... .. .. 20.00
(d) 7 or greater but less than 10 ... .. .......... . 30.00
(e) 10 or greater but less than 15 ....... .. ...... 40.00
(f) 15 or greater but less than 23 ...... .. .... .. . 50.00
(q) 23 or greater but less than 40 ... ............ 60.00
(h) 40 or greater . ...................... .. ....... 80.00
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SEC. 307. (a) If after a permit is issued to a named licensee under the
provisions hereof, he abandons the job, becomes incapacitated or his services
are terminated by the person for whom the work is being done prior to the
final inspection and approval thereof by the City, the licensee, and upon
his failure, refusal or inability to do so, the person engaging the services
of the licensee, shall immediately notify the Chief Mechanical Inspector in
writing. Upon such notification, the Chief Mechanical Inspector sha11 immedi-
ately have an inspection made of the work completed to that time, and he shall
revoke the outstanding permit and require that a new permit be taken out before
the work is allowed to resume.
(b) After hearing by the Board any licensee may have his license repealed,
revoked, or suspended by the Board for any of the following reasons:
1. Adjudication of insanity;
2. Fraud or misrepresentation in obtaining license or permit;
3. Violation of any provision of this Ordinance, the Plumbing, Electrical
or Building Codes, or Ordinances, or any other regulatory ordinances
of the City applicable to the installation, alteration or repair of,
appliances, equipment or systems as set forth in Section 102;
4. Conviction of defrauding any person for whom he has rendered or con-
tracted to render service; and,
5. Failure to obtain a permit, or transferral of a permit to an unauthor-
ized person;
6. Bankruptcy of person, partnership, firm, company or corporation;
provided, that written notice of the hearing, stating grounds, of the complaint,
shall have been given the licensee by certified mail, at least ten (10) days
before the hearing,
B-10
PART II
DEFINITIONS AND ABBREVIATIONS
CHAPTER 4 - DEFINITIONS AND ABBREVIATIONS
AIR FILTERS. A Class I air filter is one which, when clean, does
not contribute fuel when attacked by flame and emits only negligible
amounts of smoke when tested by the method of Underwriters' Laboratories,
Inc,, Standard 900, September, 1965.
AIR FLOW SWITCHES are devices actuated by the flow of air in a duct
system; Air flow switches installed in ducts handling vapor-laden air
shall be located on the suction side of fans to minimize condensed deposit
on moving parts.
AIR POLUTION. See Chapter 18 for definitions.
ALTERATION shall mean a change in the heating, ventilating, comfort
cooling, refrigeration systems, incinerators and other miscellaneous
heat-producing appliances, that involves an extension, addition or change
to the size, location, arrangement, type or purpose of the original in-
stallation.
APPLIANCE is a device which utilizes fuel or other forms of energy
to produce light, heat, power, refrigeration or air conditioning. This
definition also shall include a vented decorative appliance. See Table 9
for various classifications.
APPROVED, as to materials, equipment and method of construction,
refers to approval by the Board as the result of investigation and tests
conducted by competent individuals, recognized testing agencies or firms
or by reasons of accepted principals or tests by national authorities,
technical or scientific organizations.
APPROVED AGENCY is an established and recognized agency regularly
engaged in conducting tests or furnishing inspection services, when such
agency has been approved by the Board.
SEC. 404. BLOWER - A fan used to force air under pressure into an
effected area.
BUILDING OFFICIAL - See Chief Mechanical Inspector.
CHIEF MECHANICAL INSPECTOR is the official charged with the enforce-
ment of this Code, or his regularly authorized deputy. The word Building
Official has the same meaning and is used interchangeably with Chief
Mechanical Inspector.
COMBUSTIBLE LIQUIDS shall mean any liquid having a flash point at
or above 1400 F. (600 C.), and shall be known as Class III liquids. Class
IIIA shall include those having flash points at or above 1400 F. (600 C.)
B-11
and below 2000 F. (93.40 C.). Class IIIB shall include those having
flash points at or above 200o F. (93.40 C.). Also see FLAMMABLE LIQUIDS,
COMBUSTIBLE MATERIAL - As pertaining to materials adjacent to or in
contact with heat-producing appliances, chimney connectors, steam and hot
water pipes, and warm air ducts, shall mean materials made of or surfaced
with wood, compressed paper, plant fibres, or other material that will
ignite and burn. Such material shall be considered as combustible even
though flame-proofed fire retardant treated, or plastered.
CONTROL, LIMIT - An automatic control responsive to changes in
liquid level, pressure or temperature; for limiting the operation of the
controlled equipment.
CONTROL, SAFETY - An automatic control (including relays, switches,
and other auxiliary equipment used in conjunction therewith to form a
safety control system) which is intended to prevent unsafe operation of
the controlled equipment.
COOKING APPLIANCE, FLOOR-MOUNTED RESTAURANT-TYPE - A range, oven,
broiler, and other miscellaneous cooking appliances of a type designated
for use in hotel and restaurant kitchens and for mounting on the floor.
CLASS 0 - Air Ducts - A Class 0 air duct shall have a fire-hazard
classification of zero (flame spread and smoke developed). The duct shall
retard the passage of flame (fire) for a period of at least thirty (30)
minutes.
CLASS I - Air Ducts - A Class I air duct shall have a flame-spread
rating of not over twenty-five (25) without evidence of continued pro-
gressive combustion and a smoke-developed rating of not over fifty (50).
The duct shall retard the passage of flame (fire) for a period of at least
thirty (30) minutes.
CLASS 2 - Air Ducts - A Class 2 air duct shall have a flame-spread
rating of not over fifty (50) without evidence of continued progressive
combustion and a smoke-developed rating of not over fifty (50) for the
inside surface material and not over one-hundred (100) for the outside
surface material. The duct shall retard the passage of flame (fire) for a
period of at least fifteen (15) minutes.
DUCT COVERING - The outside covering of a duct, fan casing duct
plenum etc. includes materials such as adhesive, insulation, banding,
coatings, film and jacket.
DUCT LINING - The inside lining of a duct, fan casing, duct plenum
includes materials such as adhesive, insulation, coating and film.
ELECTRICAL VENTILATION INTERLOCKING means a fan that is motor
B-12
driven by direct shaft or at least two Vee belts, is interlocked with
the safety control circuit, by energizing the circuit from the load side
of an overcurrent-protected starter for the fan motor, through an extra
contact of the starter, a suitable relay or transformer.
EXHAUSTER - A fan used to withdraw air from an affected area under
suction.
SEC. 408. FIRE DAMPER. See Section 406, "DAMPERS."
FIRE PARTITION - A partition that is erected for the purpose of
restricting spread of fire or to provide an area of refuge, but not neces-
sarily continuous through all stories or extended through the roof, and
to be so classified must have a fire-resistive rating of not less than
one or two hours as required. A required fire partition is one which is
required by the provisions of the Building Code applying to some specific
occupancy.
FIRE RESISTIVE means the quality of a material, product or construc-
tion system which has been tested by a recognized testing laboratory in
accordance with the requirements of the American Society of Testing Materials
and the National Fire Prevention Association,
FIRE-RESISTANCE RATING means the time in hours that the material or
type of construction will withstand the standard fire exposure as deter-
mined by a fire test made in conformity with the "Standard Methods of
Fire Tests of Building Construction and Materials" ASTME 119, U.L. 263,
N.F.P.A. No. 251.
FIRE WALL - A cell constructed of solid masonry units, or of hollow
masonry units faced on each side with brick, or reinforced concrete. They
are used to subdivide a building or separate buildings to restrict the
spread of fire. The wall starts at the foundation and extends continuously,
through all stories to and above the roof, except where the roof is of
fire-resistive or semi-fire-resistive construction and the wall is carried
up tightly against the underside of the roof slab.
FLAME-SPREAD RATING - The flame-spread rating of materials as deter-
mined by the Method of Test of Surface Burning Characteristics of Build-
ing Materials, NFPA #255, ASTM E84, Underwriters' Laboratories, Inc.
Standard. Such materials are listed in the Underwriters' Laboratories,
Inc. Building Materials List under the heading "Hazard Classification
(Fire)."
FLAMMABLE LIQUIDS shall mean any liquid having a flash point below
B-13
1400 and havi--,3 a vapor pressure not exceeding forty (40) pounds per
square inch (absolute) at 1000 F.
Flammable liquids shall be divided into two classes of liquids
as follows:
Class I liquids shall include those having flash points below
1000 F. and may be subdivided as follows:
Class IA shall include those having flash points below 730 F.
and having a boiling point below 1000 F.
Class IB shall include those having flash points below 730 F.
and having a boiling point at or above 1000 F.
Class IC shall include those having flash points at or above
730 F. and below 1000 F.
Class II liquids shall include those having flash points at or
above 1000 F. and below 1400 F.
The volatility of liquids is increased when artifically heated
to temperatures equal to or higher than their flash points. When so
heated Class II and III liquids shall be subject to the applicable
requirements for Class I or II liquids. This Code may also be applied
to high flash point liquids when so heated even though these same
liquids when not heated are outside of its scope.
SEC, 414. LABELED. Equipment or materials to which has been
attached a label of a nationally recognized testing laboratory that
maintains periodic inspection of production of labeled equipment or
materials and by whose labeling is indicated compliance with nationally
recognized standards or the conductance of tests to determine suitable
usage in a specified manner.
LISTED equipment or materials included in a list published by a
nationally recognized testing laboratory that maintains periodic in-
spection of production of listed equipment or materials and whose list-
ing states either that the equipment or material meets nationally
•
recognized standards or has been tested and found suitable for use in
a specified manner.
PUBLIC WAY is any parcel of land, unobstructed from the ground
to the sky, appropriated to the free passage of the general public.
REPAIRS shall mean working on, maintaining or replacement of any
of the following items for the sole purpose of maintaining or continu-
ing the life of the system of which the item is a part, items being as
follows:
B-14
Cond--a31o; unit:,: cunt o!,, compressors, motors, filters, `;oTvj;=Ilia^
ers, conve. ca-.a, evaporators, heat exchangers, (other thsn direct-fir(!d
heat exche.na,er.), piping! systems with associated valves and pumps pro-
vided; however, whet nn item I.s replaced, the replacement. Tmi.l not 1,n
an alteratfor. .o the o-riginal installation.
SEC. `iAP)'' MNI)MON as used in this Code and applied to
mechanics.:. .t.< cal€ rti a:s or equi.pnent means those which, in the a,pfiifors
of the Chief tNh_�chanlcal l aspector., can be used in the service ,for .ah.rch
the same a-rc xnt_rnnded or 11.kely to be used, with minimum hazard to ]fie,
limb or
S11Ali. - as,e:5e 'slonll" or "shall not" is used for a provision speci-
fied, that ,':v .:;{.,,.a i.; intended to be nanndatory.
"SHE• ? >, "ire" .is used to indicate pruvisians which are not
mandator-; t wi4ir;;o :;re pointzd out as recommended goad aracti(;es.
SMOK):. I)nMi'aR. A r:amper arranged to seal off air flow automatically
through a part o; am air duct aystem, so as to restrict passage of smol,,e,
A smoke a<. ,rr .n. •, h<:. _ ,Aandaard louvered damper serving other control
functions 1, t.oc:ation 'ends itself to the dual purpose. A smoke dattper
does not r>_e,� av, meet all. ,.he requirements of a fire damper.
SMOK3-_i:V,:,+)PEI1 RATING. the smoke-developed rating of materials
as deter,. ,:::i oy the Method of Test of Surface Burning Characterislics
of Build.i ID'PA No. 255, ASTM E84. Underwriters' Labora-
tories, ? , Standard, Such materials are listed in Underwriters'
Laborator-.r Inc. E,?Jlding Materials List under heading "Hazard Classi-
fication ,'Fi.re)."
B-15
PART III
HEATING, VENTILATING, AND COMFORT COOLING
CHAPTER 5 - EQUIPMENT - GENERAL
SEC, 502. (a) Each appliance shall be approved by the Board for
safe use or comply with applicable nationally recognized standards as
determined by an approved testing agency.
SEC, 503. (a) GENERAL, Each appliance shall be designed for use
with the type of fuel to which it will be connected. No such appliance
shall be converted from the fuel specified on the rating plate, for use
with a different fuel without securing reapproval from the Chief Mechani-
cal Inspector and as recommended by the manufacturer of either the
original equipment or the conversion equipment.
1. Heating appliances shall not be installed in any location
where flammable vapors are likely to be present, unless the design,
operation and installation are such as to eliminate the possibility of
igniting the flammable vapors.
2. Duct furnaces shall not be located upstream from cooling units.
3. A readily accessible approved shutoff valve shall be installed
in the fuel piping outside of each appliance and ahead of the union
connection thereto in addition to any valve provided on the appliance.
Such valve shall be within three feet (3') of the appliance it serves
and shall be an iron body, brass core cock.
SEC. 506 (a) EXCEPTION: The listed shut-off devices shall not be
required on range or cooking tops, log lighters, lights or other open
burner manually operated appliances, or listed appliances not requir-
ing such devices and specific industrial appliances as approved by
the Board.
V)
1f11 Electric duct heaters used with air conditioners or other air
cooling equipment which may result in condensation of mositure shall
be U. L. Listed and approved for use with air conditioners. Means
shall be provided to insure that the fan circuit is energized before
the first electric duct heater circuit is energized,
A Firestat shall be installed in the air return of a
gas-fired or electric heating forced air appliance.
SEC. 508 (d) Overhead heaters shall be installed with the
bottom of the heater at least eight feet (8') above the floor.
B-16
(e) Duct furnaces may be installed downstream from cooling coils
or air washers if the heating element is made of corrosion-resistant
material. Stainless steel, ceramic-coated steel, or an aluminum-coated
• steel in which the bond between the steel and the aluminum is an iron-
aluminum alloy, are considered to be corrosion-resistant. Air washers
operating with chilled water which deliver air below the dew point of
the ambient air at the appliance are considered as cooling systems.
1. All duct furnaces shall be approved and carry the seal of the
American Gas Association (A.G.A.). A plate indicating the approved
clearances shall be mounted on the heater.
2. Furnace shall have a condensate drain outlet in the bottom
of the unit. Drain outlet shall discharge through a non-ferrus line
to a floor drain, or other approved drain outlet.
3. Each duct heater shall be equipped with a limit switch, having
a top setting of 250 degrees. Wiring to gas valve shall be installed
in such a manner that the gas valve will not open unless the fan cir-
cuit is energized. An air flow switch, suitable for system velocity,
shall be located in the duct between the fan and heater and incorporated
in the gas valve wiring circuit to assure the flow of air through the
heater before the main gas valve opens.
4, lleaterz shall. be erected in accordance with their listing,
and shall be safely and adequately supported with due consideration
given to their weight. Hangers, brackets and stands shall be of non-
combustible material.
5. The ducts connected to duct furnaces shall have removable
access panels on both r.he upstream and downstream sides of the furnace -
minimum size of access panels 11" x 13".
(f) Indirect vented gas-fired heaters (Infra-Red), not requiring
an individual flue pipe, shall be installed only in spaces which have
a minimum infiltration of one air change per hour for general ventila-
tion. Provision shall be made for ventilation air to be discharged from
high points under the roof or other approved location.
1. Threshold value of CO2 shall not exceed 5,000 ppm in accord-
ance with ASHRE GUIDE. Minimum ventilation requirements to maintain
this condition when burning either natural gas or propane is 4.2 C.F.M.
per 1,000 B.T.U.'s.
B-17
2. When automatic recycling controls are not an integral part of
the heating unit, it shall be furnished with 100 per cent shut off.
3. Infra-red heaters, equipped with a vent outlet shall be vented
to the outside of the enclosing building. Listed vent cap shall be in-
creased one size larger than the vent pipe, using an approved reducer.
Method of venting shall conform to the manufacturer's recommendations.
(g) Unvented, direct gas-fired heaters shall conform to the follow-
ing:
1. Heaters may be installed only in Groups F and G Occupancies,
unless otherwise approved by the Board.
2. The total discharge of such equipment shall not exceed 110
per cent of the capacity of the exhaust system in conjunction with
which it is used.
3. All air handled by such equipment, including combustion air,
shall be brought in from outside.
4. The ratio of gas input by volume to the total volume of mix-
ture discharged by such equipment shall not exceed .2 per cent.
5. Operation of direct-fired gas heaters used to blanket truck
or railroad car doors shall be controlled by door-type switches.
Switch shall be located so it will start the heater when the door has
opened sufficiently to provide one (1) square inch per Li-,000 B.t.u.'s
of heater input capacity.
6. Uhere direct-fired heaters are used as makeup air heaters,
they shall be interlocked with the exhaust fans. In addition, there
shall be an adjustable room-type thermostat set to cycle heating unit
if room temperature becomes excessive and a high temperature limit
control. The latter shall be set at a temperature not to exceed 1200 F.
7. The amount of Carbon Monoxide (CO) detected in the air stream
shall not exceed 100 ppm.
8. Units shall be supported or suspended in an approved manner
with a minimum clearance of twelve inches (12") from combustibles, on
all sides, top and bottom.
9. Data shall be submitted to the Chief Inspector showing that
electric and gas controls comply with Factory Mutual or. Factory Insur-
ance Association specifications. A copy of manufacturer's certified test
of burner shall also be furnished.
10. Field assembled direct-fired heaters shall conform to this Code.
Manufacturer shall furnish diagrams and/or drawings of field assembled
direct-fired heaters.
B-18
Fig. 3. Extent of Protection Required to Reduce Clearances
From Gas Appliances or Vent Connectors.
CONSTRUCTION USING COMBUSTIBLE MATERIAL
PLASTERED OR UNPLASTERED
KA
SHEET METAL o� B
A OTHER PROTECTION
C �C
GAS APPLIANCE or
VENT '.jNNECTOR
6 Fig. 3
A - equals '.he required clearance with no protection specified
in Tables No. 5 A and No. 5-C and in the sections applying to
various types of appliances.
B equals the reduced clearance permitted in accordance with
Table No. 5--B. The protection applied to the construction using
combustible material shall extend far enough in each direction to
make C equal to A.
B-19
CHAPTER 6 - COMBUSTION AIR
(b) SPACE REQUIRED. When comfort-heating appliances are installed
in space where volume in cubic feet is less than one-twentieth the total
maximum hourly fuel input rate in B.t.u.'s of all appliances, combustion
air shall be supplied from outdoors or from spaces freely connecting
with outdoors.
EXCEPTION: Cooking appliances, refrigerators and dryers need not
comply with above provisions.
(c) In calculating free area of grilles and louvers covering com-
bustion air inlets, consideration shall be given to the blocking effect
of louvers, grilles or screens protecting openings. Screens used shall
not be smaller than 1/4-inch mesh and shall be readily accessible for
cleaning. If the free area through a design of louver or grille is
known, it should be used in calculating the size opening required to
provide the free area specified. If the design and free area are not
known, it may be assumed that wood louvers will have 20 per cent free
area and metal louvers and grilles will have 70 per cent free area.
SE( , 602. No Requirements.
SEC. 603. Delete the fourth paragraph.
)4. Delete Paragraph No. 3.
1. Be of galvaniz�nd steel complying with Chapter 10 or equiva-
lent corrosion-resistant material approved for this use or by use of
a turi•ed space.
SEC. 607. No Requirements.
1'-20
CHAPTER 7 - COMFORT-HEATING SYSTEMS
SEC, 705. (d) Ducts, vents, sleeves, pipes and other objects
shall be reasonably tight fitting where they pass through the appli-
ance enclosure. In addition, space between objects and the enclosure
shall be packed with fiber glass to form a fire stop. Louvered or
grilled door shall not be used on an appliance enclosure.
SEC. 706. (b) DUCT SYSTEM. Circulating air supply for any
blower-type comfort-heating system shall be conducted through ducts
complying with Chapter 10 or through concealed spaces of incombust-
ible materials.
(f) DUCTS FOR FUEL-FIRED WARM AIR FURNACE. Except as provided in
Subsection (g) of this Section, circulating air supply for every fuel-
fired blower-type warm-air furnace shall be conducted into the blower
housing, from outside the furnace space, by continuous air tight ducts.
(g) 1. Closer than ten feet (10') from any appliance vent outlet,
unless such vent outlet is three feet (3') above the circulating air
supply inlet or unless approved as a roof-top unit.
3. A hazardous or insanitary location or a machinery room as
defined in this Code. (See Sec. 1507).
SEC, 708 (d) The area where an attic furnace is located shall be
floored not less than three feet (31) in width on the control side of
the unit. Flooring shall extend eighteen inches (18") beyond the cool-
ing coil and filter sections. A stair or minimum ladder construction
of 2 x 4's with steps on eleven-inch (1111) centers, shall give access
to the attic.
SEC, 710. (e) PLATFORM. Every appliance located on a roof of a
building shall be installed on a substantial level support. No appli-
ance shall be installed on a roof that has a slope greater than four
inches (4") measured vertically to twelve inches (12") measured hori-
zontally,
(f) Gas piping installed above the roof line shall conform to the
following;
1. The roof shall be flat, or with a pitch not more than one in
twelve.
2. Gas piping shall be supported on not more than eight feet (8')
on centers by 4" x 4" x 18" pressure-treated pine supports in pitch pans
or mopped directly to the roof.
3. Gas piping shall be of Schedule 40 steel, galvanized or black.
All joints 1 1/4" and larger shall be welded.
SEC. 710. (g) Not required.
B-21
CHAPTER 10 - DUCTS
DUCT SEC. 1001 . (a) Every duct and plenum, which is a portion
MATERIALS
of any comfort heating, comfort cooling, absorption, evaporative
cooling, ventilating or exhaust systems, shall be constructed of
galvanized steel or other noncorrosive material complying with
the requirements of this Chapter.
EXCEPTION: 1 . Ventilation and exhaust ducts may be con-
structed of black steel if approved by the Chief Mechanical In-
spector.
MASONRY 2. Return plenums in Group A, B, C, D, E, F and H Occupancies
DUCTS
may be of concrete or masonry construction. They shall not contain
any pipe work carrying flammable fuels, noxious gases or steam over
twenty-five (25) pounds pressure.
PANNED 3. Return ducts and plenums in Group I Occupancies may be
FLOOR JOISTS
constructed by panning floor joists with metal.
STUD SPACES 4. Stud spaces may be used as a return duct, by encasing
with a minimum of one inch (1") nominal tongue and groove boards,
one-half inch (1/2") gypsum board or one-quarter inch (1/4")
plywood. Top plates on partitions shall not be cut unless a
one-eiqhth inch by three -inch (1/8" x 3") header strap having two
(2) nail holes in each end is used to tie the cut plates together.
UNDERGROUND 5. Supply and return ducts, plenums and fittings constructed
DUCTS
of asbestos-cement, concrete, clay or ceramic pipe, sheet steel
duct or fittings when incased in two inches (2") of concrete, may
be installed in the ground or under a concrete slab provided all
duct, plenum and fitting joints are tightly sealed. Plenums and
grill heads shall be capped during construction.
ATTIC AS A 6. Attic space may be used as a supply or return plenum in
PLENUM
noncombustible construction, having not less than a one-hour
rated construction. Electric wiring in conduit permitted within
the attic space.
DUCTS THROUGH (b) Each duct passing through a smoke or fire barrier, rated
FIRE BARRIER
OR WALL or unrated wall, shall have crevices between the duct and wall or
ceiling filled with noncombustible insulation.
B-22
NON-METALIC (c) Approved non-metalic duct systems may be used if
DUCT
conforming to the requirements of U.M.C. Standard No. 10-1.
Ducts shall be installed in accordance with the conditions of
their approval and they shall not operate with an air tempera-
ture in excess of 2500 F.
METAL FOR Every duct, plenum, supports or fittings of metal , shall
DUCTS
comply with the specifications of Tables 10-A, 10-B, 10-C and
10-F.
VIBRATION (d) Vibration isolators shall be installed between mechanical
ISOLATORS
equipment and metal ducts (or casings) and shall be made of woven
asbestos or other approved material. They shall not exceed ten
inches (10") in length.
GALVANIZING SEC. 1002. (a) Galvanized steel coating shall be of a
REQUIREMENTS
minimum 1 .25 ounces per square foot, and shall conform to speci-
fications for zinc-coated galvanized steel sheets, coils or cut
lengths meeting the requirements of U.M.C. Standard No. 4-2
DUCT DESIGN (b) The materials, thickness and construction of ducts
STANDARDS
shall provide structural strength and durability in conformance
with good practice. Ducts which are constructed, braced and re-
inforced in accordance with the Sheet Metal and Air Conditioning
Contractors National Association for Non-metalic Ducts or in
accordance with the Duct Manuals of the Sheet Metal and Air Con-
ditioning Contractors National Association (SMACNA), Third Edition,
1967, Section 1 , Low Velocity; and First Edition, 1965, Section 2,
High Velocity are herewith considered as representing good practice.
INSTALLATION SEC. 1003. (a) All ducts shall be securely fastened in place
OF DUCTS
at every change of direction and as set forth in Tables No. 10-E,
Part I, Part II and Part III. All riser ducts shall be held in place
by means of metal straps and/or angles and channels to secure the
riser to the structure.
1 . Metal ducts shall not be installed within three inches
(Y) of the ground. Metal duct when installed in the ground shall
comply with Section 1001 (a) 5.
B-2 3
2. Round and oval ducts shall have all joints sealed with
an approved duct tape, then held together with a minimum of three
metal screws which shall be equally spaced around the perimeter
of the duct. Tapes used for sealing joints shall comply with
combustible requirements of Table 10-D.
3. All round duct fittings such as starting collars from
plenums, reducers, branch take-offs, elbows, stack and grill
heads, etc. shall be of approved factory or shop manufacture.
Round ducts shall terminate in collar of grill heads and ceilino
outlets.
4. Each piece of round duct shall have one end crimped
when erected.
5. Round duct slip joints shall have a contact lap of at
least one and one-half inches (1 112") and shall be mechanically
fastened by means of sheet metal screws, swaqing, or an equiva-
lent method.
6. Horizontal round ducts forty inches (40") or less in
diameter when suspended from above shall be supported at inter-
vals as shown in Tables 10-E, Part II and Part III, with hangers
installed to comply with the following requirements.
A. Ducts shall be equipped with tight fitting circular bands
extendinq around the entire perimeter of the duct at each specified
support interval .
H. Circular bands shall not be less than specified in Table
10-E.
C. Fach circular bdr;d shall be provided with a suitable means
of connecting to the suspending support.
D. Duct shalt be braced and guyed to prevent lateral or
horizontal swing.
E. Nails shall not be driven through the plenums or ducts
and uSed as support_:.
F. Supports for rectangular ducts as set forth in Table 10-E,
when supsp�-nded from above shall be installed on two opposite
B-24
sides of each duct and shall be riveted, bolted or metal screwed
to each side of the duct at not more than the intervals specified.
7. Piping, wire, conduit, vent pipe or structural members
shall not be within the air stream of a duct. Where this would
occur, the obstruction shall penetrate the duct in a two-piece
streamliner conforming to SMNACA Plate No. 24.
8. Where a blast coil , humidifier, automatic damper, duct
furnace or other equipment is installed in a duct, an access door
shall be installed on each side of the object. Access doors shall
be amply sized to permit cleaning and working on the equipment.
9. When insulation is installed on the outside of the duct,
the flange depth of the access door shall be equal to the thickness
of the insulation. Access doors shall be built to conform with
SMACNA Plate 30.
USE OF (d) Approved Class 0 and Class 1 non-metalic air ducts may be
NON-METALIC•
DUCT installed in any ucci�pancy covered by this Code. Approved Class 2
air ducts riay be installed in dwellings or apartment houses where
the duct system senses not more than one dwelling unit.
1 . Non-metalic ducts shall not be used for vertical risers in
air duct systems serving more than two stories nor on a portion of
a sys teiii hand'i rig more than 10,000 cubic: feet per minute.
2. Non-metalic ducts shall not penetrate construction where
fire damp:rs are required.
3. Non-metalic air ducts of any class shall not be installed
in or an thN gr•.>und, in masonry or in concrete, except when installed
as a line>p inside of concrete, tile, or metal pipe, nor shall they
be exposed to physical damage.
4. The temperature of air conveyed in any class non-metalic
0
duct shall not exceed 250 F.
,Joints between non-metalic duct sections shall be reinforced
with galvanized metal sleeves, extending at least six inches (6")
into the duct. Joints shall be sealed with an approved pressure
sensitive tape. Taped joint shall be heat sealed or applied with
B-2 5
an approved adhesive. Taped joints shall he stapled.
6. Oucts shall conform to U.M.C. Standard No. 10-1 shall
be labeled as to their class desianation and be labeled by Under-
writers' Laboratories, Inc.
REINFORCING (e) Non-metalic ducts having an internal dimension over
NON-METALIC
DUCT twenty-four inches (24") shall be externally reinforced with metal
in a manner acceptable to the Chief Mechanical Inspector.
FLEXIBLE (f) Flexible duct connectors between duct and air outlets
LUCT
CONNECTORS may be used in ary occupancy if they conform to the following pro-
TO OUTLETS
visions:
1. They✓ sha':l riot exceed twelve feet (12') in length;
2. They shc," rot penetrate construction where fire dampers
are required;
3. Thev ^a?1 not pass through floors:
4. Tl,c, ;ha? i not, he used within six feet (6') of the heating
c"ement,
r: of ; :e air to ht conveyed through such
ccrn?CTM-- -hill'i ;`.l ri. rPn,t- than %SOo F.;
rc (3") and less in diameter shall
!p;±nrr,i to t"Ir rJi n.-f;C; `o Clas; 2 air' ducts;
7. r,r, -xce-�dinu �iu'it inches (2") in diameter shall
or.q tho for ;:!s I air ducts;
1,. Th-y shad ' i t:.uiated iii -ccordance with the requirements
Of Sec.*ion luf)"! t
DUCT '004, (; rrj cr,aditioned air supply duct and plenum
INSULATION
>hafl he irisulat.d ,;it ,j ;L,,, Char, the amount of insulation and
it )anne,r sei. forth in �!o. 10-0.
(bi Non-metalic ducts shall have not less than the insulating
value required in Tat,?e No. 10-D.
(c) Only appr:,vrcd materiais shall o,2 used within the ducts
and plenums for insulating, ound de,adenino or other purposes. All
such materials small have a mold, humidity and erosion resistant
face that has met the requirements of U.M.C. Standard No. 10-1
Such materials shall he allowed in occupancies as for Class 1 and
B-26
Class 2 air ducts based upon their flame-spread and smoke developed
ratings. Duct systems operating at velocities in excess of 2000
feet per minute shall be fastened with both adhesive and mechanical
fasteners, and all exposed edges shall have adequate treatment to
withstand the operating velocity.
(d) Only approved materials shall be used for adhesive or seal-
ing purposes.
(e) Class 1 duct coverings and linings (see Section 4 Defini-
tions) shall have a flame-spread rating not over 25 without evidence
of continued progressive combustion and with a smoke developed
ratino not higher than 50. If the coverings and linings are to be
applied with adhesives, they shall he tested as applied with such
adhesives, or the adhesives used shall have a flame-spread rating
not over 25 and a smoke developed ratino not higher than 50.
EXCEPTION: Coverings ne(A not meet these requirements where
they are entirely located outside of a building and do not penetrate
a wall or roof, and do not create an exposure hazard.
(f) Evidence shall also be offered that the duct coverings and
linings will not V ame, glow, smoider. or smoke at a temperature to
which it is exposed in service. In no case shill the test tem-
perature be below 250`) F.
(g) Duct coverings and linings shall be interrupted at the area
of operation of a fire damper or fire door, when a fire damper or
fire door is used 4n the duct penetration of a fire partition or
fire wall. Duct coverings and linim,s shall also be interrupted at
the immediate area of operation of heal;, sources in a duct system
involving electric resistance or fue>i-turning heaters.
TABLE NO. 10-D
MINIMUMM DUCT INSULATION REQUIREMENTS
`=INSULATION MATERIALL(SS�
EXTERNAL '=ADHFSIVES INTERNAL
DUCT FACING DUCT
DUCT LOCATION INSULATION TAPES,ETC. INSULATION
Supply ducts on roof or A F X
exposed to outside air
Return ducts or roof or B E X
exposed to outside air
Supply ducts in attics C & F i F X
and above ceilings
Return ducts in attics C & F ! F _ Y _
and above ceilings j
Supply ducts between
floor spaces, under D F
floors & in basements
1 upply ducts within D I F Z
a furred space
Return ducts in between
floor spaces, basements , "!Oh' RFf1!IRED
& within conditioned '
areas i
Underground supply & (lta!F. i E0i!I�P�D
return ducts j
Supply ducts within NVJ1 R!-0MIRFD
conditioned areas
'Insulation may be omitt-Od cr ti;at ;-or,,-Iran of r_ ;uonlY or return
duct which is located within; a vertt-a? �i,,ll space, if the wall spac:=
is within the conditioned area.
Q) nsulation shall have a cooducti ity of ii )m M2 trr 0.28 B.t,u. 's
per square foot por in;;'n pen, degr�.ey F. at. 0fj F mean temp^ratu,'e.
(Adhesive shall he vermin;-proof,
TYPES OF SEC. 1005. All insulation and accessories installed shall be
INSULATION
AND approved or U.L. Labeled or listed.
ACCESSORIES
A. Two-inch (2") thickness of fiber glass having a minimum
three-fourths (3/4) pound density, rock wool, foamed plastic or
rubber-based hoard or other aooroved insulation.
B. Same material as A except thickness may be one inch (1").
C. Two-inch (2") blanket type three-fourths (3/4) pound
density thermal insulation that meets requirements indicated under
F. There shall be a three-inch (3") lap of insulation facing
material for stapling at longitudinal and butt joints. Acceptable
material shall have a minimum thickness of one and one-half inches
(1 1/2") after application.
NOTE: Commercial , industrial and public buildina duct insula-
tion shall be vaoor proofed by havina all joints covered with an
approved material and sealed with an approved coat of fire-resistive
adhesive and/or mastic.
D. Same material as C thickness may be one inch (1").
E. Covered -title two (2) coals of weather-oroof mastic in
accordance with the IISUIat1Nn Planufactu-er's instructions.
F. Insulation, facing material, tapes and adhesives shall
conform to the following:
Class I -ncc_�Ipancies All Other Occupancies
Flame spread ..- - - I -- )-- ---- --- 25
Fuel contributed }I 15 0
Smoke developed ( 5(1 _ _ 50
X. Approved thermal and/or a�:coustical duct liner one inch
0") thick and having a denasiiy of "wo (2) pounds per cubic foot,
applied by brake foriaino, with the metal and held in place with fire
resistive adhesive.
1 . When the ducat exceeds 0a elvc inches (12") in width or
twenty-four inches (24") in height the liner shall be additionally
secured with mechanical fa_.tenines on a maximum of sixteen-inch (16")
centers on top and sides.
2. Cover all edges ,0 th a cuatinn of fire-resistive adhesive
or mastic. The edge facing into the air stream shall be held in
B-29
place by the metal of the duct.
3. For velocities over 4,000 feet per minute, consult the
Chief Mechanical Inspector.
Y. Same material as X except thickness may be one-half inch
(112").
Z. Same material as Y except one and one-half (1 112) pounds
density may be used.
FIRE DOORS SEC. 1006. (a) Construction and installation of fire doors
AND DAMPERS
and dampers required in ducts and behind outlets which pierce walls,
floors and ceilings having a fire rating, shall conform to this
chapter.
(b) Fire doors and dampers used in duct systems shall be
Underwriters' Laboratories, Inc. labeled.
FIRE DOORS SEC. 1007. (a) Fire doors shall be used where ducts pierce
FOR DUCTS
fire walls havinq a three (3) or four (4) hour rating.
(b) Underwriters' Laboratories, Inc. tests and labels only a
three (3) hour fire door for ducts. A three (3) hour labeled door
shall be installed on one side of a floor or wall having a three (3)
or four (4) hour rating, when pierced by a duct.
FIRE DAMPERS SEC. 1008. (a) Fire dampers shall be installed where ducts
FOR DUCTS
pierce one (1) and two (2) hour rated fire partitions.
(b) Underwriters' Laboratories, Inc. tests and labels only a
one and one-half (1 112) hour fire damper for ducts. A. one and
one-half (1 112) labeled damper shall be installed when ducts pierce
a one (1) or two (2) hour rated fire partition.
INSTALLATION SFC. 1009. Fire doors shall be installed in conformance with
OF FIRE DOORS
SMACNA Plate No. 25.
INSTALLATION SEC. 1010. (a) Fire dampers may require the use of wall collars
OF FIRE
DAMPERS for wall-mounted dampers and floor collars for horizontally-mounted
dampers. Perimeter-mounted angles shall be attached to the collar
on both sides of the wall or floor opening.
(b) Collar shall not be attached to wall or floor but shall be
held in place by retaining angles in order to allow for expansion
of the damper in the event of fire.
(c) Connecting ducts shall terminate at the collar and shall
have duct-sleve connections as shown in Figure 1.
B-30
(d) Fire dampers whose frame is of sufficient width to permit
direct attachment of perimeter mounting angles on each side of a
wall or floor openings are not required to use collars, provided
the gauge of the damper frame is 16 gauge for dampers with dimen-
sions not exceeding twenty-four inches (24") in height or thirty-six
inches (36") in width and fourteen (14) gauge for larger sizes.
(e) Suitable hand hole openings with tightly fitting covers
shall be provided for damper inspection and maintenance.
(f) Dampers shall be arranged to close automatically in the
event of abnormal high temperature. Fusible links shall have a
temperature rating approximately 50 decrees F. above the maximum
temperature that would normally be encountered with the system
either in operation or shut down.
(g) Dampers shall remain mechanically held in the closed posi-
tion during a fire.
WHERE FIRE SEC. 1011. When the outlets from or the inlets to ducts pass
DOORS ARE
REQUIRED through a three (3) or four (4) hour rated fire wall, they shall
be provided with automatic fire doors on eacliside of the wall
through which they pass. Also, see Section 1007.
WHERE FIRE SEC. 1012. (a) Where a duct passes through a one (1) or two
DAMPERS ARE
REQUIRED (2) hour rated fire partition, it shall be equipped with a fire
damper in the center of the partition. Also, see Section 1008.
EXCEPTION: A, one-hour rated enclosure of a furnace room.
Note: See Table 10-F to determine required occupancy separa-
tions.
(b) At each opening through the wall of a required fire
enclosure of a vertical shaft, see (c) for an alternate method of
accomplishing the same results.
(c) Where duct systems serve two (2) or more floors, install
an approved damper at each point where the vertical duct pierces
the floor it serves.
(d) As an alternate to encasement of vertical ducts which
extend through only one floor, dampers shall be located at each
point where the floor is pierced.
(e) Where ducts pierce corridor walls required to have a one (1)
hour rating.
B-31
or better-fire partition wall.
EXCEPTION: One-story buildings in Occupancy Groups F and G,
when occupied by one tenant only and having an occupancy load of
thirty (30) persons or less.
(f) Where ducts installed above a fire resisting ceiling are
provided with openings in the ceiling, and such openings require fire
dampers for protection to conform with•the design of the fire resis-
tive floor or roof and ceiling assembly as tested in accordance with
N.F.P.A. N251.
Note: When the ceiling below a fire-resistive rated floor or
roof is not fire rated, there are no fire-damper requirements for
ducts penetrating the non-rated ceiling.
(g) Aluminum duct or Class 1 duct, regardless of size, passing
through floors of buildings requiring the protection of vertical open-
ings, shall be enclosed with noncombustible one (1) hour fire re-
sistive rated-partition in buildings of less than four (4) stories
in height. The duct enclosing fire-resistive rated partition shall
be two (2) hours in a building four (4) stories or more in height.
All floor openings shall be protected by fire dampers.
(h) Ducts passing from furnace enclosure of any fire rating,
including floor, walls or ceiling, into vehicle repair, servicing or
painting areas.
(i) EXCEPTION: Fire dampers required under Sec. 1012 may be
omitted where any of the following conditions prevail:
1. In galvanized steel branch ducts having a cross-sectional
area of less than twenty (20) square inches which supply only air
conditioning units discharging air at not over four feet (4') above
the floor.
2. Ducts from individual heating plants installed in Class I
Occupancies.
3. In small buildings with unprotected door openings.
4. In duct systems serving only one floor and used only for
inlet or exhaust of air to the outside and not penetratinq a fire
wall or fire partition or passing entirely through the enclosure of
a vertical shaft.
B-32
5. Where branch ducts connect to return risers in which
the air flow is upward and subducts, at least twenty-two inches
(22") in length, are carried up inside the riser from each outlet.
(j) The designer of an air duct system shall show on the plans
the location of all automatic fire doors and fire dampers as required
herein.
SEC. 1013. See U.B.C. Standard No. 30-1 and Chapter 43
of the 1970 Edition of the Fort Worth Building Code, Volume 1 for
further information on Fire Dampers. (U.B.C. Standard No: 30-1
is reprinted in the appendix of this Code.)
PUBLIC SEC. 1014. (a) Public corridors in institutional and residential
CORRIDORS
occupancies except one- and two-family dwellinqs shall not be used
as a portion of a supply or return air system serving adjoining
areas other than toilet rooms, bathrooms, shower rooms, sink closets
and similar auxiliary spaces opening directly on the corridor. This
requirement shall not prohibit the use of mechanical ventilation for
the corridors. In apartment houses, this requirement shall not pro-
hibit the use of a corridor as a source of make-up air through nor-
mal leakage around doors for interior exhaust fans in kitchens,
appliances, bathrooms, and toilets.
NOTE: Institutional and residential occupancies are herein
defined as follows:
Institutional - Hospitals, nursing homes, nurseries, homes for
the aged, mentally retarded care institutions, penal institutions,
reformatories, jails, and other similar occupancies.
Residential - Hotels, motels, apartment buildings, condomin-
iums, dormitories, orphanages, lodging or rooming houses.
(b) Stairways connecting two or more stories shall not be used
as plenums.
(c) Furred spaces above exit halls may be used as return plenums
provided the floor construction above and the ceilings below are of
fire-resistant material having a minimum rating of one (1) hour.
VENTILATING SEC. 1015. (a) GENERAL. Perforated ceilings may be used for
CEILINGS
B-33
the supply of conditioned air within the limitations of this
Section. Exit corridors when required to be of fire-resistive
construction by Section 3301 of the latest edition of the Fort
Worth Building Code, Volume I, shall not have ventilating ceilings.
(b) REQUIRLMENIS. Ventilatinq ceilings shall comply with
the following provisions:
1. The suspended ceiling material shall have a Class 1
flame-spread classification on both the exposed and unexposed sides.
Such classificat4,m :hall be determined in accordance with the
procedures se!. tnrth ir, the, 1a t t:<<ition of the Fort Worth Build-
ing Code, Volwne I.
2. Lightinq fixtures recessed into the ventilating ceiling
shall be of an for that, type of installation.
3. Except, f�, m t2ti.zl, plenums shall be lined
with materials -ss in .c•_-ion 10(W (a) of this Code.
4. The eu, ; 1i: -u;)perts { r,1i be of incombustible
materials.
5. Where ry +o i rstal , . .,.t? col wiring within the
plenum, all Oirinr{ .hi! ! l,e in incur.";u ti` 'c: enclosures regardless
of the voltage i• � ���'.
USE OF UNDERFLOOR SEC. 101,E r��.r�,r��ec +��, �l„ i. = Vechanical Inspector be-
SPACE AS SUPPLY
PLENUM fore installat:10r n iir,c,, ,i::aco .,lay he used as a supply
plenum provided;
1. Use of ,,i; ;u, r'-> ;n tI be restricted to one-story por-
tions of
2. Such 1 : worF Char twenty-four inches
(24") in height: to t.�, u.,,:_,;;, of flr.or ,foist: shall be cleaned
of all corribustiLl_ rn::c :r�,l h.•? t be tightly and substan-
tially enclosed.
3. The encio, wi i ;i `h underfloor space including
the side wall instil,;: ;r,r. i,,, no; iort, Flammable than one-inch
(1") (nominal) woui r,( ; r,. , lessification of 200).
Combustible ground covui �nai ° n i(Ct 1'�I! -,ver with at least two
inches (21 of sand o, other ie rrsateria1.
t
a s A
4. Access shall be through an opening in the floor and
shall be not less than twenty-four inches by twenty-four inches
(24" x 24").
5. The furnace supplying warm air to such space shall be
equipped with an automatic control which will start the air
circulating fan when the air in the furnace bonnet reaches a
temperature not higher than 1500 F. Such control shall be one
that cannot be set higher than 1500 F.
6. The furnace supplying warm air to such space shall be
equipped with an approved temperature limit control that will
limit outlet air temperature to 2000 F.
7. An incombustible receptacle shall be placed below each
floor opening into the air chamber, and such receptacle shall
conform to the following:
A. The receptacle shall be securely suspended from the floor
members and shall be not more than eighteen inches (18") below the
floor opening.
B. The area of the receptacle shall extend three inches (3")
beyond the opening on all sides.
C. The perimeter of the receptacle shall have a vertical
lip at least one inch (11 high at the open sides if it is at the
level of the bottom of the joists, or three inches (3") high if the
receptacle is suspended.
8. Floor registers shall be designed for easy removal in
order to give access for cleaning the receptacles.
9. Exterior walls and interior stud partitions shall be fire-
stopped at the floor.
10. Each wall or floor register shall be connected to the
air chamber by a register box or boot with shield directly below the
register opening.
11. Supply ducts to the air chamber shall terminate not less
than six feet (6') from the plenum chamber.
12. The entire ground surface of the underfloor space shall be
covered with a vapor barrier consisting of a minimum thickness of
four mils.
S-35
AUTOMATIC SHUTOFFS SEC. 1017. A device complying with U.B.C. Standard No.
43-6 which will detect products of combustion other than
heat and which will shut down the equipment, shall be placed
in the main circulating air supply duct on the downstream side
of the filters and so located as to operate in case of smoke in
the air stream, or such devices may be installed in each room
or space served by a return air duct. (U.B.C. Standard No.
43-6 is reprinted in the Appendix of this Code.)
Thi; requirement is applicable to each single system pro-
vidinn Comfort heatinq or comfort cooling operating in excess
of 400,000 B.i .u. 's in Groups A,h, Division 1; R, nivision 2;
C, D, and H Occupancies and in Group F, nivision 2 Occupancies
more than three stories in height. or, exceeding thirtv-six thou-
sand square reet (3(.000 sq.ft,) in basic floor area. Whenever
a system serves r1ore titan one occupancy (Iroup, such devices
shall be nrovi!de i.
E';FL1)71CI:•r: Wii&,ri a-11 rr:,i I,av�_ direct. exi� to the exterior
of the bUildi,Ll, cV: devices arc not required.
SLIP
i `0
P,LTERNATI- PAR .,HP REINFORCED
FAR SI P (ST,i PI DI I iG S"SLIP) BAR SLIP(CLEAT)
AllGL.E SiJP STANDING SFAM POCKET LOCK
INSIDE SLIP JOINT DOUBLE"S" SLIP
YIGURF, 1
P-36
♦ 1
TABLE NO. 10-C—GAGES OF METAL DUCTS AND PLENUMS USED FOR
CtM FORT HEATING OR COOLING FOR A SINGLE DWELLING UNIT
COMFORT HEATING OR COOLING COMFORT
Galranited Steel HEATING ONL
E9u'ralent Minimum
Gel.suited Wn(ht
Nominal Sheet ADDros neste Tm-Plate
Thiehness Gase Aluminum Pounds Der
6n Inches) Ni. B G S Lage Base Dee
- -
Round Ducts
and Enclosed
Reetangidar
Ducts
14"or less 0 016 30 26 13.5
Over 14" 0.019 28 24
Exposed Rec-
langular Ducts
14"or less 0.019 28 21
Over 14" 0.022 26 23
TABLE NO. 10-E—DUCT SUPPORTS
PART 1—VERTICAL DUCTS
MAXIMUM MAXIMUM
SIDE OF DIAMETER
RECTANGULAR METAL STRAP OR OF ROUND
DUCT ANGLE BRACKET' DUCTS
(In Inches) (In Inches) (In Inches) METAL STRAPS'
24 1 x%(Strap) 10 No. 18 gage galvanizer)
steel 2"wide
36 1 A x 1 x% 20 No. 16 gage galvanizer)
ngle steel 2"wide
48 1%x1%x% 40 %"steel x1%"
Angle
60 1%x 1%X to 60 %"steel x 2"
AnglOver 60 2 Angle Over 80 A steel is 2"
'Spaced vertically not more than twelve feet(12')on centers.
TABLE NO. 10-E—DUCT SUPPORTS
PART II—HORIZONTAL DUCTS
MAXIMUM MAXIMUM
SIDE OF DIAMETER
RECTANGULAR OF ROUND
DUCT DUCT
(In Inches) HANGER STRAP' (In Inches) MANGER STRAP
18 1"x 18 cage
18
30 1~x 18 cage gaTvaf31%6dasteel
duct,111 wide or
48 1"x% 20 '_II inch prefor—
ated strap iron
60 1"is%
-- — 40
80 1"x%
60— _ Same gage as galvanized
steel duct, 11/x" wide on
6' centers
Over 60 Same gage as galvanized
steel duct, 1%' wide on
4' centers
'Spaced horiraotally not more than ten feet(101)on centers.
TABLE NO. 10-E—DUCT SUPPORTS(Continued)
PART III—HORIZONTAL DUCTS—TRAPEZE TYPE SUPPORTS
MAXIMUM
DIAMETER OF
BOUND DUCT
OR S1DE OF HORIZONTAL
RECTANGULAR SUPPORT
DUCT ANGLE
(In Inches) (In Inches)' HANGER '
36 1,2 x 1'z X"A 14"round rod or 1"x 1,"x% angle
48 2 x 2 x% 1.s"round rod or 1"x 1"x 1/n"angle
60 2 x 2 x 1/a n"round rod or 1"is 1"x 1/a"angle
84 2 x 2 x% % round rod or 1"x 1"x'A"angle
'Hansen and support angle assemblies%paced not more than eight feet
centers.
B-37
10—F
VOLE 1:0. frQUliiT SEFA7!,.TID;IS C: EUILDIi:<S OF 611XED CUCUPAi1CY
(In Hours)
CROUP A D C D E-1 E-2' E-3 6<-5 F1 F-2 F-3 C H I 1
A N --�-.N.— 3._-4 4 �4 4 4Y 3 3 3 1 1 V 1
B --N -N, 3--- 4 4 4 4--- 3 1 1 1 1 1 1
C N 1 4 4 4 4 4 1 1 1 1 1 1
TJ N 4 4 4 4 4' 2 4 4 1 1
F-1 N 1 1 1 2 2 2--- 2-- --4 -- 4-- -1_-
F.-2 N 1 1 1 1 1 1 3 3 1
E-3 N 1 1 1 1 1 3 3 1
EA-5 N 1 1 1 1 3 3 1
F-2 N 1 1 1 N 1
F-3 N 1 1 N 1
G N 1 N N
H N N 1
I N 1+
] N
—:.---;-, _-..— -----T en n---n------t-e-
i. s-I, d
t�, r � I n, I t I.A t --r---„1':,-t
pDs - I, t I .. I., •l. t, i,d,
tl
d�,t, -d rig`,
N ..c ,.
GENERAL OCCUPANCY GROUPINGS
(Condensed from G:cT :Cili Building Code)
Group
A ' Any- assembly building with a sta a and occupancy load of 1000 or
more people.
B-1: Anyy assembly building with a stage and occupany load of less than
1OJO,
L-2: Any £aocL:bl buJ-ldinC- ii.thollt a StC"'J and an ocCL1F-)'-:nu lo�',d of' 300
or more.
B-3: Any ass2ulbly buildin_ tir -t-hcut: a stale and an occupancy fond of 1e�s
than 300,
B-4: revJ c',iinL stLnds and amuscr! nt park structures.
C Schools
D-1: I•,el�tsl hospitals, Jails, r1::nt:17. sanit riu:r'.s, Uri>Gns.
D-2: Hospitals, full.-ti„e child (undor 5 years) care nurseries, nu.'sin-
ho^t,es r11th non- ,!Lela c:,'y patients.
D-3: Nure,in; ho.--e for a:r.bulntory patients, ho-,ics for ci;ildr--n over you---'.
E-1: Storase and facilit-los for hazardous and highly flal..�ble
or explesiva r::ate-rials.
E-2: Building's h?.ndlin— end storm;; Class 1, 2, and 3 f"la::..,a.le licL;ics
as specified in U, B. C. Standard No. 9-1-67, dry cleaning plants,
and spray painting shops
E-3: WoodeiovkinS establishments, planing; dills and box factories.
E-11: Repair Sari--es
L-5: Airc_,,l Ct ro_oa:.r L;arar-es.
F-1: Gas stntione and story garEc cs
F--2: l;hol.c°gale -nd ret7,il. stores, office buildm;s, e ;ling and drink)-n
est�bl.l.shm2ncs h2vin;� an occup-,nt to ,d of less th;111 100,
F--3: Airerc.Cc story -- h^.n _ :rs and opon p-1,klnS
G Ice plants, pLi:J?inS pl nts, factories and YIOrkShOn3 LIS1-n- incG:i!--
bustibl,:,
H Hotel: and :.per rne:nt Hou es,
I aielil.nS and Iad;;inLs ho,.ses.
J-1: Private gas c^rports, and shedr;,
J-2: Fences C)vr-,r 6Jf cctt high, tnn'.:s and to,.iers.
B-38
J .
• CHAPTER 1-1 SSNTILATION SYSTEMS +,
SEC. 1104 (a) Where duct gas temperatures exceed 2500 F. the duct
material shall be incombustible and shall be covered with non-combustible
insulation adequate to prevent the resulting exposed surface temperature
from exceeding 1400 F. Duct material shall be suitable for long-time
exposure to the operating conditions without the probability of gross
deterioration and shall be approved by the Chief Mechanical Inspector.
If lapped duct joints are used, they must be lapped with the flow. Duct
slopes shall be maintained and/or drains provided to prevent condensa-
tion drip in areas where the Chief Mechanical Inspector judges such could
be detrimental to structure, building contents, or occupants.
(b) Ducts for corrosive vapors shall be of materials having long-
time resistance to deterioration from attack by corrosive vapors. Joints
and seams shall be vapor and liquid tight.
(c) Ducts conveying combustible material shall discharge only into
an approved combustion chamber or other approved safe area, and shall
be equipped with a device designed to prevent fire flash back into the
system. Except as provided herein, flammables may not be discharged
internally in any structure.
SEC. 1109 8. Grease extractors for exhaust ducts shall remove a
large percentage of grease and other particulate matter from cooking
fumes and exhaust, then disposing or storing such matter so that it will
not be readily subject to ignition. This may be accomplished by Electro-
static precipitators, washing sprays or streams, equipment which produces
changes in direction of exhaust streams, or by other cleansing equipment.
(a) The extractor shall prevent the passage of flame or gases hav-
ing a temperature in excess of 3750 F. into the exhaust duct. This may
be accomplished by temperature actuated dampers, continuously wetted
screens, or other means.
(b) An extractor shall not introduce a fire or shock hazard when
located in or as part of a ventilating hood and connected to an exhaust
duct.
(c) Extractor shall be continuously self-cleaning or equipped with
manually or automatically-operated cleaning mechanism, thereby resisting
build up of grease and other material in the extracting equipment.
(d) Grease extractors are to be installed in accordance with the
manufacturer's instructions.
(e) Grease extractors for exhaust ducts shall be listed under the
label service of Underwriter's Laboratories, Inc.
B-39
SEC. 1109 (c) 4. When vented range hoods are installed in Class I
Occupancies, they shall conform to all the requirements of Chapter II.
EXCEPTION: Automatic fire protection is not required.
(a) Exhaust duct from hood shall terminate in a capped top having
a free area of not less than the free area of the duct. Discharge shall
be not less than fifteen inches (15") above the roof surface.
(b) Minimum size of duct shall be seven inches (7"). Nothing shall
penetrate the duct. Duct construction shall conform to Table No. 10-C.
(e) The location of all exhaust equipment shall be within property
lines and conform to Chapter 45 of the Latest Edition of the Fort Worth
Building Code, Volume 1. No exhaust fan shall discharge, unless a
minimum of twenty (20) feet high, on or over a sidewalk, parking area,
driveway or Public Way.
SEC. 1111. (c) An automatic fire protection system for each com-
mercial hood and exhaust duct shall be installed in each hood. Auto-
matic fire protection may be either a CO2 or dry chemical system. Ex-
tinguisher shall be a minimum of a 10 B.C. rated portable extinguisher.
1. Equipment shall be U.L. approved.
2. System shall be approved by the State Board of Insurance.
3. System shall be recertified each twelve (12) months with the
State Board of Insurance.
SEC. 1112. (a) Interior toilets except dwellings shall have an
exhaust system having not less than one air change every five (5) minutes.
Provision shall be made for make-up air.
(b) When exhaust fans are installed, the air discharge duct shall
be not Less than four inches (4") in diameter and shall conform to all
requirements of Chapter 11. All duct joints shall be held together with
metal screws. Combustible material shall not be attached to the duct
system.
B-40
• ' SEC. 1206. A comfort-dooling system shall not be installed in
any Class I Occupancy unless the attic space or roof is insulated with
the equivalent of three and a half (A) inches of mineral wool having
a conductivity of not more than 0.32. Three and one-half (3' ) inches
fiber glass or rock wool bats will meet this requirement.
CHILLED-HOT SEC. 1207. (a) Copper tubing for chilled-hot water piping
WATER PIPING
MATERIALS shall have a weiaht of not less than that of conner type L.
EXCEPTION: Type M copper tubing may be used when piping
is not run under a slab or is above ground and the normal maximum
pressure does not exceed 100 pounds and the working temperature
does not exceed 210 F.
(b) Steel pipe shall be standard weight steel pipe size
(I.P.S.) pipe. Underground steel pipe shall have all connections
welded. Pipe size two and one-half inches (2 1/211) (I.P.S.) and
larger shall have welded joints. Underground copper pipe joints
shall be made with high temperature solder equal to silfos.
(c) Pipe connections to an apartment building shall have
gate valves installed in the supply and return lines, approximately
two feet (2') outside of the building foundation. Valves shall
be accessible through a twelve-inch (12") diameter concrete valve
box with concrete or cast iron top, finished flush with final
Grade.
(d) Valves shall be installed in the supply and return line
at each coil connection.
INSTALLATION SEC. 1208. (a) VERTICAL PIPING. 1. Vertical piping shall
OF CHILLED-
HOT WATER be secured at sufficiently close intervals to keep the pipe in
PIPING
VERTICAL alignment and carry the weight of the pipe and contents.
PIPING
2. Screwed pipe (I.P.S.) shall be supported at each story
heiqht.
3. Cooper tubing shall be supported at each story height for
piping one and one half inches (1 1/2") and larqer in diameter.
Piping one and one quarter inches(1 1/4") and smaller in diameter
shall be supported at not more than six-foot (6') intervals.
HORIZONTAL (b) HORIZONTAL PIPING. 1. Horizontal piping shall be sup-
PIPING
ported at sufficiently close intervals to keep it in alignment and
prevent sagging.
2. Screwed pipe (I.P.S J shall be supported at approximately
twelve-foot (12') intervals.
3. Copper tubina shall be supported at approximately six-foot
(6') intervals for piping one and one half inches (1 1/2") and
B-41
}
smaller in diameter. Piping two inches (2") and larger in diameter
shall be supported at ten-foot (101) intervals.
HANGERS AND (c) Hangers and anchors shall be of metal of sufficient
ANCHORS
strength to maintain their proportional share of the weight of
pipe and contents.
TESTING OF (d) Chilled-hot water piping system shall be tested and
PIPING
Proven tight under a water pressure not less than the water pres-
sure under which it is to be used. In no case shall the test
pressure be less than eighty (80) pounds. Piping shall withstand
the test pressure without reduction for a period of not less than
fifteen (15) minutes. Pressure test shall be made before any
connection is covered with insulation.
PIPE SFC. 1209. (a) Chilled-hot water underground pipe insula-
INSULATION
MATERIALS lation shall he a minimum thickness of one inch (1") and have a
"K" factor between 0.22 and 0.30 at 75 F mean temperature. Material
shall be polystyrene, foamglas, polyurethane or other approved
insulation. Installation shall be in accordance with manufacturers'
instructions.
(b) Chilled-hot water pipe insulation above ground shall Le
a minimum thickness of one inch (1") and have a "K" factor between
0.22 and 0.30 at /5 F mean temperature. Material shall be mineral
inch
wool pipe covering, one/thickness, with attached vapor barrier
jacket, flexible foamed plastic or rubber based pipe covering of
three-eighths-inch (3/8") thickness. Installation shall be in
accordance -with manufacturers' instructions.
CONDENSATE SEC. 1210. (a) Condensate drains from air-cooling coils and
DRAINS
units shall di charge, through an open-sight connection, into a
,lumbinq fixtt:rE, floor drain or approved disposal area. See
Section, 001 (e).
EXCEPTION: Condensate drains may be directly connected to a
bussed and taped tub overflow connection or into a sink or basin
tail piece with a taping above the inlet to the P-trap. Overflow
aid tai I he factory made.
(b) Occupancies may install a French drain which shall
be a minimum of three feet (3') from the building foundation. Drain
B-42
sumo shall contain three (3) cubic feet of washed gravel, then
covered with one foot of top soil. A hole two feet (2') square
and two feet (2') deep will contain the required amount of gravel
and top soil.
CC) Drain line from a cooling coil shall not be smaller
than the outlet from coil unit. Minimum size drain line from a
cooling coil shall be three-quarter inch (3/4"). When more than one
coil drain is connected to a collector line, the line shall in-
crease one size at each coil connection up to a maximum size of
one and one quarter-inch (1 1/4") pipe. Drain piping shall be of
non-ferrous metal and horizontal runs shall have a fall of one-eighth
inch (1/8") per, foot.
EXCEPTION: Four (4) apartment fan and coil units, which do
not exceed a total capacity of ten (10) tons, may be connected into
one three-quarter-inch (3/4") drain line terminating into a plumb-
ing fixture.
INSULATED SEC. 1211. (a) Drain lines located above ceilings, in attics,
DRAINS
stud spaces or furnace rooms shall be insulated.
DRAIN LINE (b) Condensate drain pipe insulation shall be mineral wool or
INSULATION
MATERIAL fiberglass pipe covering with attached universal jacket, foamed
plastic or rubber-based oipe covcrinq or other approved material .
Insulation shall have a "V factor of 0.22 to 0.30 at 75 F mean
temperature.
1 . Mineral wool or fiberglass insulation shall have a thick-
ness of one-half inch (1/2").
2. Foamed plastic or rubber-based insulation shall have a
thickness of three eighths inch (3/8").
INSULATION (c) Circular and longitudinal joints of insulation on drain
APPLICATION
lines shall be sealed with an approved material. Mineral wool or
B-43
fiberglass insulation shall be banded.
Foamed plastic or rubber-based insulation shall be applied
without longitudinal cuts.
EQUIPMENT SEC. 1212. (a) Overflow, waste or drainage water from
OVERFLOW
AND DRAINAGE evaporative condensers, cooling towers or evaporative coolers
LINES
shall discharge directly into a fixture connected to a sanitary
sewer
(b) Drainage lines shall be valved at the equipment and
extended full size of equipment outlet to point of discharge.
(c) Discharge lines shall be copper or standard weiqht
galvanized steel pipe.
DRAINAGE ON SEC. 1213. Condensate,. overflow or drainage water shall not
PUBLIC WAY
discharge on or over a Public Way.
B-44
CHAPTER 13 - ABSORPTION UNITS AND ABSORPTION SYSTEMS
FOR COMFORT COOLING AND COMFORT HEATING
SEC. 1302. Substitute Board for Building Official.
SEC, 1304. Delete second and third paragraphs and Exception.
SEC. 1306 (j) Either polyethylene or poly-vinyl pipe with nylon mesh reinforc-
ing may be used for conveying chilled water provided circulating system is open to
atmospheric conditions, operating pressure on pump discharge shall not exceed 25
pounds per square inch. Piping shall not be installed under solid floor slabs such
as concrete or masonry. For solid slab floor construction, piping shall be installed
above the floor, in an open or furred space, attic space or pipe chase.
(k) Polyethylene or poly-vinyl shall be of virgin resins, of medium density,
flexible, rated at 75 pounds per square inch.
(1) Chilled water lines shall be insulated with plastic foam or rubber pipe
insulation of not less than three-eighths inch (3/8") wall thickness.
CHAPTER 14 - EVAPORATIVE COOLING SYSTEM
SEC, 1401. Every evaporative cooling system installed on a building used for
commercial or industrial purposes shall comply with this chapter.
EXCEPTION: Evaporative coolers installed in I Occupancies.
CHAPTER 15 - REFRIGERATING EQUIPMENT
SEC. 1502. Substitute "Board" for "Building Official."
SEC. 1506. Delete last sentence of first paragraph.
SEC. 1507. Delete second paragraph.
SEC. 1509. Delete
SEC. 1510. Delete eighth paragraph and Exception.
SEC. 1514. Not required.
SEC. 1515. Not required.
SEC. 1516. Not required.
SEC. 1517. Not required.
SEC. 1518. Not required.
SEC. 1519. Not required.
SEC. 1520. Not required.
CHAPTER 17 - COOLING TOWA.RS AMD EVAPORATIVE CONDENSERS
(d) All water wasted from the refrigerating apparatus shall not be directly
connected into any waste, or sewer of a plumbing system. Waste water shall dis-
charge into a receptacle through an open air gap. Such receptacle shall be
properly trapped and vented. Valved drain shall discharge into a sanitary
sewer system. See Section 1212.
(e) Drain connections shall not be required for cooling towers in residen-
tial installations; provided, drainage does not flow onto public property, ad-
joining property, or create a nuisance. B-45
�y
(f) Water shall not be discharged on roofs unless the storm water leaders
serving the roof are connected to the City storm sewer or storm drainage sys-
tem. Any such water discharge which results in water reaching a street,
street gutter, alley or any public or private premises is prohibited.
(g) Water discharged, overflowed or blown from an existing air condition-
ing system to the alley, street, public or private property is prohibited.
(h) Potable water shall not be used in refrigerating or air conditioning
apparatus unless the water supply thereto shall be provided with a suitable
back flow preventor or air relief device located, at least two times the diameter
of the opening, above the top of any chamber or basin in which water may be con-
tained, sprayed or circulated.
(i) Circulating pumps for air conditioning systems shall not be placed on
the roof of a building unless the pump is equipped with a mechanical seal or
packless stuffing box. Circulating pumps for air conditioning systems shall
not be placed on the side of a building or in an alley.
(j) An atmospheric cooling tower shall not be used in connection with any
air conditioning system.
6--46
PART V
MISCELLANEOUS
CHAPTER 18 - INCINERATORS
DEFINITIONS SEC. 1800. As used in these regulations, the following words
shall have the meaning ascribed in this Section as follows:
1. ASME - American Society of Mechanical Engineers, 345 East
47th Street, New York, New York.
2. ASTM - American Society for Testing and Materials, 1916
Race Street, Philadelphia, Pennsylvania.
3. Existing - as applied to any equipment, contrivance, or
installation in being, operation or construction as of the effec-
tive date of this Code, for the purpose of burning waste.
4. Incineration - Means an operation in which combustion is
carried on for the principal purpose, or with the principal result,
of oxidizing a waste material to reduce its bulk or facilitate its
disposal.
5. Incinerator - Any article, machine, equipment, contrivance,
structure, or part of a structure used to burn refuse or to process
refuse material by burning.
6. Multiple chamber incinerator - Any incinerator used to dispose
of combustible refuse by burning and consisting of three or more fire
brick or refractory-lined chambers in series, physically separated by
fire brick or refractory walls, interconnected by gas passage ports
or ducts, and employing adequate design parameters necessary for maxi-
mum combustion of the material to be burned, the refractories shall have
a Pyrometric Cone Equivalent to 31 tested according to the method de-
scribed in the ASTM Method C-24-56.
7. New - as applied to any equipment, machine, device, article,
or contrivance or installation, shall not mean "existing" as defined
herein.
8. Open Burning - The burning of any materials wherein air con-
taminants resulting from combustion are emitted directly into the
ambient air without passing through a stack or chimney from an enclosed
chamber. For the purposes of this definition, a chamber shall be re-
garded as enclosed when during the time combustion takes place, only
such apertures, ducts, stacks, flues or chimneys as are necessary to
provide combustion air and to permit the escape of exhaust gases.
B-47
f
9. Particulate matter - Any material, except uncombined water, ,
which exists in a finely divided form as a liquid or solid at standard
conditions.
10. Process weight - The total weight of all materials introduced
into an incinerator, excluding liquids as gases used solely as fuels,
an excluding air introduced for purposes of combustion.
11. Refuse (Waste) - Garbage, rubbish, trade wastes, leaves,
salvageable material, agricultural wastes, and all other combustibles
capable of combustion in an incinerator.
12. Ringelmann Chart - 'Rtingelmann's Scale for Grading the Density
of Smoke" as published in U. S. Bureau of Mines Information Circular
2333.
13. Smoke - Small gas-borne particles resulting from combustion,
consisting of carbon, ash, and other material.
GENERAL SEC. 1801. Incinerators for the reduction of refuse, garbage or
other waste materials shall conform to the requirements of this Chapter.
CLASSIFICATION SEC. 1802. For the purpose of this Code, wastes are classified
OF WASTES AND
INCINERATORS into the following types, with information as to their approximate
heating value and moisture content included as a guide to the selec-
tion of proper equipment to best incinerate a particular waste. In-
cinerators are classified by their capacities and by the types of
wastes they are intended to incinerate.
CLASSIFICATION TYPE 0 - A mixture of highly combustible waste, such as paper,
OF WASTES
cardboard, cartons, wood boxes, and combustible floor sweepings, from
commercial and industrial activities. The mixtures contain up to 10
per cent by weight of plastic bags, coated paper, laminated paper,
treated corrugated cardboard, oily rags, and plastic rubber scraps.
This type of waste contains not more than 10 per cent moisture, 5
per cent noncombustible solids, and has a heating value of 8,500
B.t.u.'s per pound as fired.
TYPE 1 - A mixture of combustible waste, such as paper, cardboard
cartons, wood scrap, foliage, and combustible floor sweepings, from
commercial and industrial activities. The mixture contains up to 20
per cent by weight of restaurant or cafeteria waste, but contains
little or no treated papers, plastic, or rubber wastes.
This type of waste contains not more than 25 per cent moisture,
10 per cent noncombustible solids, and has a heating value of 6,500
B.t.u.'s per pound as fired.
B-48
TYPE 2 - Waste consisting of an approximately even mixture of
Type 1 waste and garbage, Type 3 waste, by weight.
This type of waste is common to apartment and residential occu-
pancy, consisting of up to 50 per cent moisture, 7 per cent non-
combustible solids, and has a heating value of 4,500 B.t.u.'s per
pound as fired.
TYPE 3 - Garbage, consisting of animal and vegetable wastes from
restaurants, cafeterias, hotels, hospitals, markets, and like installa-
tions.
This type of waste contains up to 70 per cent moisture, up to 5
per cent noncombustible solids, and has a heating value of 2,500
B.t.u.'s per pound as fired.
TYPE 4 - Human and animal remains, consisting of carcasses,
organs, and solid organic wastes from hospitals, laboratories, abat-
toirs, animal pounds, and similar sources consisting of up to 85 per
cent moisture, 5 per cent noncombustible solids, and having a heat-
ing value of 1,000 B.t.u.'s per pound as fired.
TYPE 5 - By-products waste, gaseous liquid, or semiliquid, such
as tar, paints, solvents, sludge, fumes, etc., from industrial opera-
tions. B.t.u. values must be determined by the individual materials
to be destroyed.
TYPE 6 - Solid by-product waste, such as rubber, plastics, wood
waste, etc., from industrial operations. B.t.u. values must be deter-
mined by the individual materials to be destroyed.
REFUSE STORAGE SEC. 1803. Incinerators, in which the combined hearth and grate
ROOMS FOR
INCINERATORS area of the combustion chamber if seven square feet or less, shall
have refuse storage rooms separated from other parts of the building
by walls and ceiling having a fire resistance of not less than one hour,
and used for no other purpose except storage of containers of waste
materials to be burned. In private dwellings occupied by not more than
two families a residential-type incinerator need not be in a separate
room provided minimum clearances prescribed for residential-type in-
cinerators are provided.
SEC. 1804. Incinerators in which the combined hearth and grate
area of the combustion chamber exceeds seven square feet shall have
refuse storage rooms separated from other parts of the building by
walls, floor and ceiling assemblies constructed of noncombustible
material and having a fire-resistance rating of not less than two hours
B-49
and used for no other purpose except as storage containers of waste
material to be burned. y
SEC. 1805. Door or other ppenings in rooms containing incinerator
communicating with other areas shall be protected by approved self-
closing automatic fire doors suitable for Class B openings.
SEC. 1806. (a) Automatic sprinklers and a short length of hand
hose connected to a suitable water supply are recommended in the in-
cinerator room.
(b) Piping shall not be installed in incinerator refuse storage
rooms.
EXCEPTION: Sprinkler piping, lighting circuit conduit or domes-
tic water hose connection.
INCINERATOR SEC. 1807. Incinerators, other than those used in one and two-
LOCATIONS
family dwellings, shall be located outside of any building. Minimum
distance from incinerator casing to any combustible material shall be
maintained at thirty-six inches (36").
EXCEPTION: An incinerator may be located within an enclosed
structure, provided, the enclosure is windowless and is fire-resistive
construction conforming to Sections1803 and 1804. Door openings shall
conform to Section 1805.
Combustion and/or ventilation ducts or openings shall be pro-
tected by automatic fire dampers suitable for Class B openings. Air
ducts extending from an incinerator room shall be constructed and
protected in accordance with Chapter 10. Opening for combustion air
duct shall have a free area of not less than 0.5 square foot per
500,000 B.t.u.'s per hour incinerator burning rate.
ARRESTERS SEC. 1808. (a) Stacks, vents or chimneys shall be equipped with
arresters, including bolts, rivets, screws and supporting members made
of stainless steel.
(b) The net free area of the arrester shall be not less than four
(4) times the net free area of the outlet of the chimney flue it serves.
(c) Arresters shall have a vertical height of not less than 1.3
times the minimum horizontal dimension of a rectangular flue or the
diameter of a circular flue.
(d) Arrester openings shall not permit the passage of spheres
having a diameter larger than one-half inch (1/2"), nor block the
passage of spheres having a diameter of less than three-eighths inch (3/811).
(e) Proper means shall be provided for securely attaching the spark
arrester to the chimney flue to provide adequate support and prevent
movement of the arrester.
B-50
v
GENERAL SEC, 1809. (a) The burning capacity of an incinerator shall be
PROVISIONS
the manufacturer's or designer's guaranteed maximum rate, for the type
of wastes to be consumed, and shall be demonstrated in an opacity per-
formance test witnessed by the Air Pollution Authority for a period
of not less than one hour per test.
Purchaser and/or user shall not operate incinerator in excess of
manufacturer's rated capacity when burning a designated waste of types,
0, 1, 2, 3, 4, 5, or 6. Burning capacity of incinerator for the type
of waste to be consumed shall be posted on the incinerator by the
manufacturer.
(b) An incinerator shall not be used for the burning of waste
unless such incinerator is a multiple chamber incinerator or approved
by the Board. Existing incinerators which are not multiple chamber
incinerators may be altered, modified or rebuilt as necessary to meet
this and the following performance requirements.
EXCEPTION: Single chamber incinerators may be used in Class I
Occupancies only.
(c) Upon completion of installation of an incinerator, the manu-
facturer shall file a request with the Air Pollution Control Authority
to schedule the performance tests called for in Section 1811.
1. The purchaser and/or user shall provide all combustibles and
perform any and all required tests.
2. The vendor may at his expense employ and have present at any
or all on-site tests, an independent testing organization or other
qualified persons who are subject to the approval of the Air Pollu-
tion Control Authority.
3. Performance tests shall be witnessed in all cases by a repre-
sentative of the Air Pollution Control Authority.
(d) Vendor shall furnish to the Board and the Air Pollution Con-
trol Authority a report containing test data with analysis of results
of stack particulate emissions for the design and model of each in-
cinerator sold. The report shall also include results of opacity
readings taken at not more than ten-minute intervals throughout the
test period.
1. Tests shall be conducted by an approved independent testing
organization.
B-51
(B) When the tests i.ndi,cate the incinerator is not operating in,, '.
conformance with Section 1810, no person shall permit or cause further
operation of the incinerator; except for additional tests as outlined
in Section 1811, until approval is received from the Air Pollution
Control Authority. In the event an incinerator cannot be made to
operate in compliance with Section 1810, the incinerator shall be re-
moved by the vendor from the jurisdiction of the City of Fort Worth.
RESTRICTION SEC. 1810. (a) No person, firm, or corporation may cause or per-
OF EMISSIONS
FROM mit the emission of smoke or particulate matter from the stack or vent
INCINERATORS
of any incinerator in excess of the following.
1. Sources of visible emissions from gray or black smoke with
an opacity as much as, or greater than, Ringleman No. 1 on the Ringle-
man Smoke Chart for a period of three (3) minutes out of sixty (60)
minutes of operation.
2. Sources of visible emissions other than gray or black with
an opacity as much as, or greater than, an equivalent opacity of No. 1
on the Ringleman Smoke Chart for a period of three (3) minutes out of
sixty (60) minutes of operation.
3. 0.2 grains of particulate matter per standard dry cubic
foot of flue gas.
(b) Incinerators shall be designed and operated so that all gases,
vapors and entrained effluents shall be maintained at a temperature
entering the stack or vent from the incinerator adequate to prevent
the emission of objectional odors. Other methods of odor control
that are equally effective, when approved, are acceptable.
SEC, 1811. (a) A performance test to determine compliance with
the Ringelmann smoke and/or an opacity requirement of this Code (Sec-
tion 1810) shall be witnessed by a representative of the Air Pollution
Control Authority who shall authorize the operation of each new in-
cinerator, and each existing incinerator modified or rebuilt.
(b) The amount of particulate matter emitted from an incinerator
shall be determined according to the ASME Power Test Codes, PTC-27
dated 1957 and entitled "Determining Dust Concentration in a Gas Stream."
In calculating the amount of particulate matter in stack gas, the load-
ing shall be adjusted to 12 per cent carbon dioxide in the stack gas.
The carbon dioxide produced by burning any liquid or gaseous fuel in
auxiliary burners shall be excluded from the calculation to 12 per cent
carbon dioxide. Emissions shall be measured when the incinerator is
operating at the maximum burning capacity as defined in Section 1809.
B-52
a + M
c
(c) A representative sample of the waste normally generated and v ,
introduced into the incinerator shall be available for use in the per-
formance tests specified in this Section. An amount of material suf-
ficient for ninety (90) minutes continuous operation of the incinerator
at full-rated capacity for the refuse to be handled, shall be provided
by the user for the test.
PEMT SEC, 1812. A permit shall be obtained from the Mechanical Inspec-
REQUIREMENTS
tion Department before the installation of any incinerator or the modi-
fication or rebuilding of an existing incinerator. An application for
permit to install, modify or rebuild shall be made in writing by the
vendor and accompanied by plans and specifications covering the unit.
To qualify for a permit, new incinerators shall comply with the follow-
ing requirements.
(a) Unit shall be a multiple chamber incinerator as defined in
Section 1800.
(b) All chambers of the unit shall be fully lined with a minimum
of four and a half inches (4 1/2") of fire brick or refractory.
(c) Unit shall be fully steel-cased, with adequate insulation
between steel casing and interior refractory so that no part of the
casing shall exceed a temperature of two hundred (200) degrees F. when
the unit is operating at full-rated capacity. Steel incinerator stacks
shall be lined with insulating refractory and not exceed the external
temperature of two hundred (200) degrees F.
(d) Unit shall employ at least one primary and one secondary
burner. Burners shall be capable of preheating and operation in com-
pliance with Section 1810.
(e) Unit shall include positive means of supplying primary and
secondary air for combustion in an amount not less than 150 per cent
theoretical air for combustion of the type refuse to be burned at full-
rated capacity of the unit.
APPROVAL BY SEC, 1813. Issuance of a permit will not constitute approval of
AIR POLLUTION
CONTROL the incinerator by the Air Pollution Control Authority. Approval to
AUTHORITY
operate the incinerator will be issued by the Air Pollution Authority
after satisfactory compliance with Section 1810 and Section 1811.
COMPLIANCE SEC. 1814. Permission to operate the unit may be revoked at any
SCHEDULE FOR
EXISTING time by the Air Pollution Control Authority in the event the unit is
INCINERATORS
not maintained and operated in compliance with Section 1810.
B-53
i h
CHAPTER 19 - MISCELLANEOUS HEAT-PRODUCING APPLIANCES
I l SEC. 1903. Delete last paragraph and add the following:
D� Clothes dryers shall be approved by the American Gas Association or the
Underwriters' Laboratory.
Domestic'clothes dryers shall be exhausted to the outside if installed in
a bedroom or bath.
All Type 2 clothes dryers shall exhaust to the outside.
Exhaust may be through the wall, terminating in an approved lint catcher, f
or through the roof, terminating in a rainproof outlet.
Lint discharge or collection on a roof, yard, street, alley or any public
or private property or premises is prohibited.
Combustion air for fuel-fired dryers shall conform to the requirements of
Chapter 6. Combustion air shall be taken from outside.
Circulating air for the dryers shall also be taken from the outside. A
minimum area of one (1) square inch shall be provided for each ten (10) cubic
feet per minute of dryer air.
Ducts for inlet or discharge air shall conform to Chapter 6.
A minimum clear passage of two feet (2') shall be available at the rear
of the units for servicing the dryer.
CHAPTER 21 - STEAM AND HOT WATER BOILERS - STEAM AND HOT WATER PIPING
SEC. 2120. Not required.
SEC. 2124. Not required.
SEC. 2125. Not required.
SEC. 2127 (14) Not required.
B-54
City of Fort Worth,. Texas
Urv�
.mayor and Council Communication
DATE REFERENCE SUBJECT: Mat
BuuDINQ, NUMBER Recommended Mechanical Code 2
12/21/70 G-1676 of
On January 27, 1969, the City Council appointed a Mechanical Code Review Com-
mittee to review the national model mechanical codes and to recommend one of
the model codes for the City of Fort Worth.
At this time Fort Worth has no separate Mechanical Code. In 1954, seventeen
regulations pertaining to the Heating- and Air conditioning industry were -in-
serted by Ordinance in the Plumbing Code. These are the only mechanical regu-
lations in effect today other than an Air Conditioning Licensing Ordinance
adopted in 1966.
After studying the five model codes, the Committee agreed, on April 23, 1969,
to recommend the Uniform Mechanical Code promulgated by the International Con-
ference of Building Officials as the model for the City of Fort Worth Mechanical
Code. The proposed Ordinance represents the work of forty-three night, two
full day and four three-quarter day study sessions in which the Mechanical
Code Review Committee amended the provisions of the 1970 Uniform Mechanical
Code. Only those changes and modifications found necessary to relate the
Code more appropriately to local conditions are recommended.
Nature of Proposed Code
In general, the proposed Uniform Mechanical Code published by the International
Conference of Building Officials, and the proposed amendments establishes a
standard in line with current good mechanical design. Most mechanical engin-
eers now specify the standards proposed in the recommended Ordinance. The
proposed Ordinance will require the Seal of a Registered Professional Engin-
eer on Air Conditioning systems with capacities exceeding twenty-five tons.
The cost of normal residential and industrial installations will not be in-
creased by the proposed Ordinance. Minor increases which will be incurred
in installation costs for commercial buildings and apartments will be offset
by operational cost savings in one to two years operation.
Inspection fees have been revised to cover the additional cost of more
thorough inspections on complex installations.
The proposed Mechanical Ordinance requires the Mechanical Code Board to review
the annual amendments to the Uniform Mechanical Code adopted by the Inter-
national Conference of Building Officials, as 'well as other suggested amend-
ments. Subsequently, the Board will submit to the City Council annually its
recommendations for revisions to the Mechanical Code of the City of Fort
Worth.
. 1
DATE REFERENCE SUBJECT: PAGE
NUMBER
12/21/70 G-1676 Recommended Mechanical Code 2 or 2
Recommendations
It is recommended that the City Council:
1) Approve the attached Ordinance adopting the 1970 Uniform Mechanical
Code and the local revisions to said Code as the Mechanical Code of
the City of Fort Worth;
2) Establish the effective date of this Ordinance as May 1, 1971.
HDM/Je
Attachments:
Letters from:
Texas Society of Professional Engineers
Tarrant County Air Conditioning Association
American Institute of Architects
Building Code Review Committee
Mechanical Code Review Committee
Copies:
Uniform Mechanical•Code
Proposed Amendments
Adopting Ordinance
SUBMITTED BY: DISPOSITION OUNCIL: PRO SSEO BY
D PP ❑ OTHER (DES�IBp
CITY SECRETARY
DATE
CITY MANAGER