OR 2002- 991 Adopts 2002 International Mechanical CodeAN ORDINANCE OF THE CITY OF COPPELL, TEXAS
ORDINANCE NO. 2002-991
AN ORDINANCE OF THE CITY OF COPPELL, TEXAS
AMENDING THE CODE OF ORDINANCES BY AMENDING
CHAPTER 15, ARTICLE 15-3 TO PROVIDE FOR THE
ADOPTION OF THE INTERNATIONAL MECHANICAL CODE,
2000 EDITION, AS THE CITY OF COPPELL MECHANICAL
CODE; PROVIDING AMENDMENTS TO THE INTERNATIONAL
MECHANICAL CODE, 2000 EDITION; PROVIDING A
SEVERABILITY CLAUSE; PROVIDING A REPEALING
CLAUSE; PROVIDING A SAVINGS CLAUSE; PROVIDING A
PENALTY FOR VIOLATION OF THIS ORDINANCE NOT TO
EXCEED THE SUM OF TWO THOUSAND DOLLARS ($2,000.00)
FOR EACH OFFENSE; AND PROVIDING AN EFFECTIVE DATE.
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF
COPPELL, TEXAS:
SECTION 1. That the Code of Ordinances of the City of Coppell, Texas be, and
the same is, hereby amended by amending Chapter 15, Article 15-3 to adopt the
International Mechanical Code, 2000 Edition, and the amendments thereto, which shall
read as follows:
"ARTICLE 15-3. MECHANICAL CODE
Sec. 15-3-1. Mechanical code adopted.
There is hereby adopted the International Mechanical Code, 2000
Edition, and made a part hereof for all purposes, the same as if fully
copied in full herein, with the exception of such sections hereof, which are
hereafter deleted, modified or amended.
Sec. 15-3-2. Amendments.
The following sections of the International Mechanical Code, 2000
Edition, are hereby amended to read as follows:
1. Amend Section 102.8 shall be amended to reference other City Codes,
which shall read as follows:
102.8 Referenced codes and standards ...... Whenever amendments
have been adopted to the referenced codes and standards, each reference to
said code and standard shall be considered to reference the amendments as
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well. Any reference to NFPA 70 or the ICC Electrical Code shall mean
the 1999 National Electrical Code as adopted and amended.
2. Amend Section 302.3 by deleting and adding the following:
302.3 Cutting, notching and boring in wood framing. When permitted
by the International Building Code, 2000 Edition, as adopted and
amended, the cutting, notching and boring of wood framing members shall
comply with Sections 302.3.1 through 302.3.
3. Section 304.5 shall be deleted in its entirety.
4. Section 304.8 shall be amended to read as follows:
304.8 Clearances from grade ...... adjoining grades a minimum of 3
inches (76 mm) or shall be suspended a minimum of 6 inches (152 mm)
above adjoining grade.
5. Section 304 shall be amended by adding 304.11, which shall read as
follows:
304.11 Minimum burial depth. Underground fuel piping systems shall
be installed a minimum depth of 18 inches (458 mm) below grade.
6. Amend Section 306.3 and 306.3.1 to read as follows:
Section 306.3 Appliances in attics. Attics containing appliances
requiring access shall be provided ..... side of the appliance. The clear
access opening dimensions shall be a minimum of 20 inches by 30 inches
(508 mm by 762 mm) or larger where such dimensions are not large
enough to allow removal of the largest appliance. As a minimum, access
to the attic space of residential uses shall be provided by one of the
following:
A permanent stair.
A pull-down stair.
An access door from an upper floor level.
Exception: The passageway and level service space are not
required where the appliance is capable of being serviced and
removed through the required opening.
306.3.1 Electrical requirements ...... Low voltage wiring of 50
volts or less shall be installed in a manner to prevent physical damage.
7. Amend Section 306.5 by deleting and replacing with new provisions,
which shall read as follows:
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Section 306.5. Equipment and appliances on roof and elevated structures.
Where equipment and appliances requiring access are installed on roofs or
elevated structures at a height exceeding 16 feet (2438 mm), such access
shall be provided by a permanent means of access. Permanent exterior
ladders providing roof access need not extend closer than 8 feet (2438
mm) to the finish grade or floor level below and shall extend to the
equipment and appliances level service space. Such access shall ..... on
roofs having a slope greater than 4 units vertical in 12 units horizontal.
A receptacle outlet shall be provided at or near the equipment and
appliance location in accordance with the Electrical Code. Low voltage
wiring of 50 volts or less shall be installed in a manner to prevent physical
damage.
8. Amend Section 306.6 by adding a second paragraph and adding
subsection 306.6.1 to read as follows:
306.6 Sloped roofs ......
A receptacle outlet shall be provided at or near the equipment and
appliance location in accordance with the Electrical Code. Low voltage
wiring of 50 volts or less shall be installed in a manner to prevent physical
damage.
306.6.1 Catwalk. On roofs having slopes greater than 4 units vertical
in 12 units horizontal, a catwalk at least 16 inches in width with
substantial cleats spaced not more than 16 inches apart shall be
provided from the roof access to the working platform at the appliance.
9. Add Section 306.7 and 306.7.1 to provide for water heaters above
ground or floor, which shall read as follows:
306.7 Water heaters above ground or floor. When the mezzanine or
platform in which a water heater is installed is more than 8 feet (2438 mm)
above the ground or floor level, it shall be made accessible by a stairway
or permanent ladder fastened to the building.
306.7.1 Whenever the mezzanine or platform is not adequately lighted
or access to a receptacle outlet is not obtainable from the main level,
lighting and a receptacle shall be provided in accordance with the
Section 306.3.1.
10. Amend Sections 307.2.1,307.2.2 and 307.2.3 to read as follows:
307.2.1 Condensate disposal ...... Condensate shall not discharge
in a publicly exposed area such as a street, alley, sidewalk or other
area so as to cause a nuisance.
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307.2.2 Drain pipe materials and sizes ......
Condensate waste pipes from air-cooling coils may be sized in
accordance with equipment capacity as follows:
Equipment capacity in tons of refrigeration
condensate pipe I.D.
Minimum
Up to 20 tons
Over 20 to 40 tons
Over 40 to 90 tons
Over 90 to 125 tons
Over 125 to 250 tons
3¼ inch
1 inch
1% inch
1 lA inch
2 inch
The size of condensate waste pipes may be for one unit or a
combination of units, or as recommended by the manufacturer. The
capacity of waste pipes assumes a 1/8 inch per foot slope, with the
pipe running three-quarters full.
307.2.3 Auxiliary and secondary drain systems .....
2.
3.
4.
Discharge, as noted, shall be to a conspicuous point of disposal to
alert occupants in the event of a stoppage of the drain. However,
the conspicuous point shall not create a hazard, such as dripping
over a walking surface or other areas so as to create a nuisance.
11. Amend Section 401.5 to provide an additional exception, which shall
read as follows:
Exceptions:
Toilet room exhaust ducts may terminate in a warehouse or
shop area when infiltration of outside air is present.
12. Amend Section 403.2 by providing an exception, and subsection
403.2.1 by adding item 4, which shall read as follows:
403.2 Outdoor air required ......
Exception: Where the design professional demonstrates that an
engineered ventilation system is designed in accordance with
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ASHRAE 62, the minimum required rate of outdoor air shall be
permitted to be as specified in such engineered system design.
403.2.1 Recirculation of air ......
Toilet rooms within private dwellings that contain only a water
closet, lavatory or combination thereof, may be ventilated with an
approved mechanical recirculating fan or similar device designed
to remove odors from the air.
13. Amend Table 403.3 by amending footnote g to read as follows:
Transfer air permitted in accordance with Section 403.2.2. Toilet
rooms within private dwellings that contain only a water closet,
lavatory or combination thereof, may be ventilated with an
approved mechanical recirculating fan or similar device designed
to remove odors from the air.
14. Amend Section 501.3 by providing an additional exception, which
shall read as follows:
Exceptions:
Toilet room exhaust ducts may terminate in a warehouse or shop
area when infiltration of outside air is present.
15. Section 504.6 and subsection 504.6.1 shall be amended to read as
follows:
504.6 Domestic clothes dryer ducts ...... The size of the duct shall not
be reduced along its developed length or at the point of termination.
504.6.1. Maximum length. The maximum length of a clothes dryer
exhaust duct shall not exceed 25 feet (7620 mm) from the dryer
location to the outlet terminal with not more than two bends. When
extra bends are installed, the maximum length of the duct shall be
reduced 2.5 feet (762 mm) for each 45 degree (0.79 rad) bend and 5
feet (1524 mm) for each 90 degree (1.6 rad) bend that occur after the
first two bends, measured in the direction of air flow.
16. Amend Subsection 506.3.11 by reducing the minimum number of
inches separating the enclosure from the duct, which shall read as
follows:
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506.3.11 Duct enclosure ...... The enclosure shall be separated
from the duct by a minimum of 3 inches (76 mm) and a maximum of
12 inches (305 mm) and shall serve a single grease duct system.
17. Amend Section 510.7 by adding an additional exception to read as
follows:
Exceptions:
Ducts where the largest cross-sectional area is less than 10 inches
(254 mm).
18. Amend Section 604.1 to provide for Table 604.1 to read as follows:
604.1 General ...... Sections 604.2 through 604.11 and Table 604.1, and
the International Energy Conservation Code, as adopted and amended.
Should there be any conflicts between this section and the energy code,
the energy code shall take precedence.
Table 604.1 - Insulation of Ducts
Insulation Types
Duct Location Mechanically Heating Zone~ Insulation Types
Cooled Heating Only
I A and W
On roof on exterior of building C, Va and W II B and W
III C and W
I A
Attics, garages and crawl spaces A and Va II A
III B
I A
In walls~, within floor-ceiling spaces~ A and Va II A
III B
Within the conditioned space or in None required None required
Basements; return ducts in air plenums
Cement slab or within ground None required None required
Note: Where ducts are used for both heating and cooling, the minimum insulation shall
be as required for the most restrictive condition.
~Heating Degree Days:
Zone I below 4,500 D.D.
Zone II 4,501 to 8,000 D.D.
Zone III over 8,000 D.D.
aVapor retarders shall be installed on supply ducts in spaces vented to the outside in
geographic areas where the summer dew point temperature based on the 2-1/2 percent
column of dry-bulb and mean coincident we-bulb temperature exceeds 60° F. (15.4° C).
~Insulation may be omitted on that portion of a duct which is located within a wall- or a
floor-ceiling space where:
~'~ Both sides of the space are exposed to conditioned air.
~.a The space is not ventilated.
~'~ The space is not used as a return plenum.
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~.4 The space is not exposed to unconditioned air.
Ceilings which form plenums need not be insulated.
INSULATION TYPE S*:
A - A material with an installed conductance of 0.48 [2.72 W/(m*K)] or the equivalent
thermal resistance of 2.1 [0.367 (m*K)/W].
Example of materials capable of meeting the above requirements:
1-inch (25 mm), 0.60 lb./cu.ft. (9.6 kg/m~) mineral fiber, rock, slag or glass
blankets.
½-inch (13 mm), 1.5 to 3 lb./cu, ft. (24 to 48 kg/m~) mineral fiber blanket duct
liner.
½-inch (13 mm), 3 to 10-lb./cu. ft. (48 to 160 kg/m~) mineral fiber board.
B - A material with an installed conductance of 0.24 [1.36 W/(m*K)] or the equivalent
thermal resistance of 4.2 [0.735 (m*K)/W].
Example of materials capable of meeting the above requirements:
2-inch (51 mm), 0.60 lb./cu, ft. (9.6 kg/m~) mineral fiber blankets.
1-inch (25 mm), 1.5 to 3 lb./cu, ft. (24 to 48 kg/m~) mineral fiber blanket duct
liner.
1-inch (25 mm), 3 to 10 lb./cu, ft. (48 to 160 kg/m~) mineral fiberboard.
C - A material with an installed conductance of 0.16 [0.9 W/(m*K)] or the equivalent
thermal resistance of 6.3 [1.1 (m*K)/W].
Example of materials capable of meeting the above requirements:
3-inch (76 mm), 0.60 lb./cu, ft. (9.6 kg/m~) mineral fiber blankets.
1-1/2 inch (38 mm), 1.5 to 3 lb./cu, ft. (24 to 48 kg/m~) mineral fiber blanket
duct liner.
1-1/2 inch (38 mm), 3 to 10 lb./cu, ft. (48 to 160 kg/m~ mineral fiberboard.
V - Vapor Retarders: Material with a perm rating not exceeding 0.05 perm (29
ng/Pa*s*m:]. All joints to be sealed.
W - Approved weatherproof barrier.
4The example of materials listed under each type is not meant to limit other available
thickness and density combinations with the equivalent installed conductance or
resistance based on the insulation only.
19. Section 604.11 by deleting the current section and adding the
following:
604.11 Vapor retarders. Where ducts used for cooling are externally
insulated, the insulation shall be covered with a vapor retarder in
accordance with Table 604.1 or aluminum foil having a minimum
thickness of 2 mils (0.051 mm). Insulation having a permeance of 0.05
perms (2.87 ng/(Pa.s..m2)), or less shall not be required to be covered. All
joints and seams shall be sealed to maintain the continuity of the vapor
retarder.
20. Amend Subsection 607.2.2 by deleting the same and replacing with
the following:
607.2.2 Hazardous exhaust ducts. Hazardous exhaust duct systems
shall extend directly to the exterior of the building and shall not extend
into or through ducts and plenums. Penetration of structural elements
shall conform to this section and the International Building Code
except that fire dampers are not required at the penetration of fire-
resistant-rated assemblies.
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21 Amend Subsection 607.5.1 to read as follows:
607.5.1 Firewalls ...... Hazardous exhaust ducts shall not penetrate
firewalls.
22. Amend Subsection 607.6.1 by deleting the same and adding the
following:
607.6.1 Through penetrations. In occupancies other than Groups I-2
and I-3, penetrations by an air duct through a fire-resistive-rated
floor/ceiling assembly that connects not more than two stories are
permitted without shaft enclosure protection where a fire damper is
installed at the floor line.
23. Chapter 14, Solar Systems, shall be deleted in its entirety.
SECTION 2. If any section, subsection, paragraph, sentence, phrase or word in
this ordinance, or application thereof to any person or circumstances is held invalid by
any court of competent jurisdiction, such holding shall not affect the validity of the
remaining portions of this ordinance, and the City Council of the City of Coppell, Texas
hereby declares it would have enacted such remaining portions despite any such
invalidity.
SECTION 3. That the repeal of any ordinance or any portion thereof by the
preceding sections shall not affect or impair any act done or right vested or accrued or
any proceeding, suit or prosecution had or commenced in any cause before such repeal
shall take effect, but every such act done, or right vested or accrued, or proceedings, suit
or prosecution had or commenced shall remain in full force and effect to all intents or
purposes as if such ordinance or part thereof so repealed shall remain in force.
SECTION 4. That any person, firm or corporation violating any of the
provisions of this ordinance or the Code of Ordinances as amended hereby, shall be
guilty of a misdemeanor and upon conviction in the Municipal Court of the City of
Coppell shall be subject to a fine not to exceed Two Thousand Dollars ($2,000) for each
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offense and each and every day such offense is continued shall constitute a new and
separate offense.
SECTION 5. That this ordinance shall become effective immediately from and
after its passage and the publication of the caption, as the law and charter is such cases
provide.
DULY PASSED by the City Council of Coppell, Texas, this the 23rd day of
April, 2002.
APPROVED:
CANDY SHEEHAN, MAYOR
ATTEST:
LIBBY BALL, CITY SECRETARY
APPRO~TO ORM:
ROBERT E. HAGER, CITY ATTORNEY
(P,J~I/cdb 4/2/02)
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