0694
ORDINANCE NO.694
AN ORDINANCE ADOPTING THE INTERNATIONAL MECHANICAL CODE, 1996
EDITION AND THE 1997 SUPPLEMENT TO THE INTERNATIONAL MECHANICAL
CODE; PROVIDING FOR THE ADOPTION OF LOCAL AMENDMENTS THERETO;
PROVIDING THAT THIS ORDINANCE SHALL BE CUMULATIVE OF ALL
ORDINANCES; PROVIDING A SEVERABILITY CLAUSE; PROVIDING A SAVINGS
CLAUSE; PROVIDING FOR PUBLICATION IN PAMPHLET FORM; PROVIDING FOR
PUBLICATION IN THE OFFICIAL NEWSPAPER; AND PROVIDING AN EFFECTIVE
DATE.
WHEREAS, The City of Southlake, Texas is a home rule city acting
under its charter adopted by the electorate pursuant to Article XI,
Section 5 of the Texas Constitution and Chapter 9 of the Local
Government Code; and
WHEREAS, City Council of the City of Southlake deems it necessary
to adopt this ordinance governing requirements for the installation and
maintenance of heating, ventilating, cooling, and refrigeration systems
in order to protect the health, safety and welfare of the citizens of
the City of Southlake.
NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF
SOUTHLAKE, TEXAS:
SECTION 1
That the International Mechanical Code, 1996 Edition, as modified
by thhe 1997 Supplement to the International Mechanical Code both being
published by the International Code Council, Inc., is hereby adopted as
the mechanical Code of the City of Southlake. A true and correct copy
of this Code is attached to this ordinance as Exhibit "A."
SECTION 2
That the 1996 International Mechanical Code as modified by the 1997
Supplements to the International Mechanical Code, as adopted herein, is
hereby amended as provided in Exhibit "B" incorporated herein and
attached hereto for all purposes of this ordinance. To effectuate
future modifications, the City council shall enact individual ordinances
amending this ordinance fully setting forth the change to be made in the
code. The amendments shall be consolidated as Exhibit "B" to this
ordinance.
SECTION 3
The material contained in Exhibit "A" to this ordinance shall be
maintained as a public record in the office of the City Secretary.
These exhibits will be available for public inspection and copying
during regular business hours.
SECTION 4
This ordinance shall be cumulative of all provisions of ordinances
of the City of Southlake, Texas, except where the provisions of this
ordinance are in direct conflict with the provisions of such ordinances,
in which event the conflicting provisions of such ordinances are hereby
repealed.
SECTION 5
It is hereby declared to be the intention of the City Council that
the phrases, clauses, sentences, paragraphs and sections of this
ordinance are severable, and if any phrase, clause, sentence, paragraph
or section of this ordinance shall be declared unconstitutional by the
valid judgment or decree of any court of competent jurisdiction, such
unconstitutionality shall not affect any of the remaining phrases.
clauses. sentences, paragraphs and sections of this ordinance, since the
2
same would have been enacted by the City council without the
incorporation in this ordinance of any such unconstitutional phrase,
clause, sentence, paragraph or section.
SECTION 6
Any person, firm or corporation who violates, disobeys, omits,
neglects or refuses to comply with or who resists the enforcement of any
of the provisions of this ordinance shall be fined not more than Two
Thousand Dollars ($2,000.00) for each offense. Each day that a
violation is permitted to exist shall constitute a separate offense.
SECTION 7
All rights and remedies of the City of Southlake are expressly
saved as to any and all violations of the provisions of any ordinances
affecting the installation and maintenance of heating, ventilating,
cooling, and refrigeration systems which have accrued at the time of the
effective date of this ordinance; and, as to such accrued violations and
all pending litigation, both civil and criminal, whether pending in
court or not, under such ordinances, same shall not be affected by this
ordinance buy may be prosecuted until final disposition by the courts.
SECTION 8
The City Secretary of the City of Southlake is hereby authorized
to publish this ordinance in book or pamphlet form for general
distribution among the public, and the operative provisions of this
ordinance as so published shall be admissible in evidence in all courts
without further proof than the production thereof.
3
SECTION 9
The City Secretary of the City of Southlake is hereby directed to
publish the proposed ordinance or its caption and penalty together with
a notice setting out the time and place for a public hearing thereon at
least ten (10) days before the second reading of this ordnance, and if
this ordinance provides for the imposition of any penalty, fine or
forfeiture for any violation of any of its provisions, then the City
Secretary shall additionally publish this ordinance in the official City
newspaper one time within ten days after passage of this ordinance, as
required by Section 3.13 of the Charter of the City of Southlake.
SECTION 10
This ordinance shall be in full force and effect from and after its
passage and publication as required by law, and it is so ordained.
PASSED AND APPROVED ON FIRST READING ON THIS DAY OF
1998.
NONN\\I RX'A
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l,i\0V CITY SECRETARY
PASSED D APPROVED ON SECOND READING ON THIS DAY OF
1998.
MAYOR
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Q' CITY SECRETARY
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APPROVED AS TO FORM AND LEGALITY:
City Attorney j
Date ~~t~ ~l k Ay
ADOPTED :
EFFECTIVE: C:\WPDOCS\ORDIANC.mec
EXHIBIT "B"
LOCAL AMENDMENTS TO THE 1996 INTERNATIONAL MECHANICAL CODE
The following sections, paragraphs, and sentences of the
International Mechanical Code, 1996 Edition, are hereby amended as
follows:
"Section 201.3; changed to read as follows:
201.3 Terms defined in other codes. Where terms are not defined in this code and are defined in the
building, electrical, fire prevention or plumbing codes, such terms shall have meanings ascribed to them
as in those codes.
"Section 202; the definitions of "Code Official" and "Hazardous Location" are changed and new
definitions are added to read as follows:
BUILDING CODE shall mean the Building Code as adopted by this jurisdiction.
CODE OFFICIAL. The officer or other designated authority charged with the administration and
enforcement of this code, or a duly authorized representative. For the purpose of this code, the Code
Official shall be the Building Official.
ELECTRICAL CODE shall mean the National Electrical Code as adopted by this jurisdiction. For the
purpose of this code, all references to NFPA 70 shall be assumed to mean the electrical code as defined
herein.
FIRE PREVENTION CODE (FIRE CODE) shall mean the Fire Code as adopted by this jurisdiction
HAZARDOUS LOCATION. As used in this code any location considered to be a fire hazard for
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flammable vapors, dust, combustible fibers or other highly combustible substances. The location is not
necessarily categorized in the building code as a high-hazard use group classification.
MECHANICAL CODE shall mean this code as adopted by this jurisdiction
PLUMBING CODE shall mean the Plumbing Code as adopted by this jurisdiction
**Section 301.1; changed to read as follows:
301.1 Scope. This chapter shall govern the approval and installation of all equipment and appliances that
comprise parts of the building mechanical systems regulated by this code i heard anee with Seeti _
ink
**Section 301.6; changed to read as follows:
301.6 Conflicts. Where conflicts between this code and the conditions of listing or the manufacturer's
installation instructions occur, the provisions of this code shall apply unless in the opinion of the Code
Official the conditions of listing or the manufacturer's installation instructions when taken as a whole
provide a higher level of protection.
**Sections 302.2, 302.3, 302.3.1 and 302.3.1.1; delete and replace with the following:
302.2 Cutting, notching and boring holes. All cutting. notching and boring of wood framing members
shall be in accordance with the Building Code.
**Section 304.7, changed to read as follows:
304.7 Clearances from grade. Equipment installed at grade level shall be supported on a level concrete
slab or other approved material extending above adjoining grade a minimum of 3 inches (76 mm) or it shall
be suspended a minimum of 6 inches (152 mm) above adjoining grade.
**Section 306.3.1; changed to read as follows:
306.3.1 Electrical requirements: A lighting fixture controlled by a switch located at the required
passageway opening and a receptacle outlet shall be provided at or near the equipment location in
accordance with NFPA 70. Low volta e wiring of 50 Volts or less shall be installed in a manner to prevent
physical damage.
96 IMC 6 of 1 11/20/97
6
"Section 306.4.1; changed to read as follows:
306.4.1 Electrical requirements: A lighting fixture controlled by a switch located at the required
passageway opening and a receptacle outlet shall be provided at or near the equipment location in
accordance with NFPA 70. Low voltage wiring of 50 Volts or less shall be installed in a manner to prevent
physical damage.
"Section 306.5; changed to read as follows:
306.5 Equipment on roofs or elevated structures. Where equipment and appliances requiring access
are installed on roofs or elevated structures at a height exceeding 16 feet (4877 mm), such access shall be
provided by a permanent approved means of access-, the extent oTwhieh sha4~om 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's level service space. Such access shall (bulk of section
to read the same)... on roofs having a slope greater than 4 units vertical in 12 units horizontal (33-percent
slope).
A receptacle outlet shall be provided at or near the equipment location in accordance with the Electrical
Code. Low volta e wiring of 50 Volts or less shall be installed in a manner to prevent physical damage
"Section 306.6; add a second paragraph to read as follows:
A receptacle outlet shall be provided at or near the equipment 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
"Section 306.6.1 added to read as follows:
306.6.1 Catwalk. On roofs having slopes greater than 4 in 12, 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.
"Section 307.2.2; add a second paragraph to read as follows:
Condensate waste pipes from air-cooling coils shall be sized in accordance with equipment capacity as
follows:
Equipment Capacity Condensate Pine
in tons of refrigeration Minimum Inside Diameter
Up to 20 tons 3/4 inch
Over 20 to 40 tons 1 inch
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Over 40 to 90 tons 1 1/4 inch
Over 90 to 125 tons 1 1/2 inch
Over 125 to 250 tons 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-12er-foot slope with the pipe running
three-quarters full.
*Any section or table not reprinted herein, shall be assumed to be deleted. Chapter 4 is changed to only
read as follows:
CHAPTER 4
VENTILATION
SECTION 401 - GENERAL
401.1 Scope. This chapter shall govern the ventilation of spaces within a building intended to be
occupied. This chapter does not govern the requirements for smoke control systems. Should any conflict
occur between this chapter and the Building Code, the Building Code shall take precedence
401.2 Ventilation required. Every occupied space shall be ventilated by natural means it rdanee
=..it Seetio n n~ or by mechanical means in accordance with the Building Code Seetiatt 403.
401.3 When required. Ventilation shall be provided during the periods that the room or space is
occupied.
401.4 Vestibule ventilation. Vestibule ventilation for smokeproof enclosures shall be in accordance with
the building code.
401.7 Opening location. Outside air exhaust and intake openings shall be located a minimum of 10 feet
(3048 mm) from lot lines or buildings on the same lot. Where openings front on a street or public way,
the distance shall be measured to the centerline of the street or public way.
Exception: Use Group R-3.
401.7.1 Intake openings. Mechanical and gravity outside air intake openings shall be located a minimum
of 10 feet (3048 mm) from any hazardous or noxious containment, such as vents, chimneys, plumbing
vents, streets, alleys, parking lots and loading docks, except as otherwise specified in this code. Where
a source of contaminant is located within 10 feet (3048 mm) of an intake opening, such opening shall be
located a minimum of -2 3 feet (64-9 915 mm) below the contaminant source.
401.7.2 Exhaust openings. Outside exhaust openings shall be located so as not to create a nuisance.
Exhaust air shall not be directed onto walkways. For Type I and II hood exhaust outlets, see Sections
506.17 and 506.18.
401.8 Outside opening protection. Air exhaust and intake openings that terminate outdoors shall be
protected with corrosion-resistant screens, louvers or grilles having a minimum opening size of 1/4 inch
(6.4 mm) and a maximum opening size of %2 inch (12.7 mm), in any dimension. Openings shall be
96 IMC 8 of 1 11/20/97
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protected against local weather conditions. Outdoor air exhaust and intake openings located in exterior
walls shall meet the provisions for exterior wall opening protectives in accordance with the building code.
401.9 Contaminant sources. Stationary local sources producing air-borne particulates, heat, odors, fumes,
spray, vapors, smoke or gases in such quantities as to be irritating or injurious to health shall be provided
with an exhaust system in accordance with Chapter 5 or a means of collection and removal of the
contaminants. Exhaust required by this section shall discharge directly to an approved location at the
exterior of the building.
SECTION 403 - MECHANICAL VENTILATION
403.1 Ventilation system. Mechanical ventilation shall be provided by a method of supply air and return
or exhaust air. The amount of supply air shall be approximately equal to the amount of return and exhaust
air. The system shall not be prohibited from producing a negative or positive pressure. The system to
convey the ventilation air shall be designed and installed in accordance with Chapter 6.
Ventilation supply systems shall be designed to deliver the required rate of supply air to the zone
within the occupied space between 3 inches (76 mm) and 72 inches (1829 mm) above the floor and more
than 2 feet (610 mm) from the enclosing walls.
403.2.1 Recirculation of air. The amount of outside air required by the Building Code Seel o 0shall
not be recirculated. Air in excess of the outside air that required by the Building Code Seet of 4934 shall
not be prohibited from being recirculated as a component of supply air to building spaces, except that:
Ventilation air shall not be recirculated from one dwelling to another or to dissimilar occupancies.
Supply air to a swimming pool and associated deck areas shall not be recirculated unless such air
is dehumidified to maintain the relative humidity of the area at 60 percent or less and such
recirculation is in accordance with Section 401.9. Air from this area shall not be
recirculated to other spaces.
"Section 501; add a second paragraph to read as follows:
Where differences occur between the provisions of this chapter and the building or fire codes the
provisions of the building or fire codes shall apply.
"Section 502.4; changed to read as follows:
502.4 Spray-painting and dipping rooms. Rooms or booths utilized for spray painting or dipping shall
have a mechanical exhaust system that complies with the fire prevention code and N 3; Building Code
The exhaust system shall have automatic controls to ensure
its operation while spray painting or dipping is being conducted.
"Section 502.7; changed to read as follows:
96 IMC 9 of 1 11/20/97
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502.7 LP-gas distribution facilities. LP-gas distribution facilities shall be ventilated in accordance with
?4FPA ~8 the applicable provisions of the Fire Code Building Code and this code.
"Section 502.10; changed to read as follows:
502.10 Public garages. Mechanical exhaust systems for public garages, as reqttired itt Chapter ,
operate eantittuattsly or shall operate in accordance with Seet t 493.5. the Building Code.
"Section 502.12; changed to read as follows:
502.12 Tire rebuilding or recapping. Each room where rubber cement is used or mixed, or where
flammable or combustible solvents are applied, shall be ventilated in accordance with the applicable
provisions of NF-PA 91 the Fire Code. Building Code and this code.
"Section 502.13; changed to read as follows:
502.13 Specific rooms. Specific rooms, including bathrooms, locker rooms, smoking lounges and toilet
rooms, shall be exhausted in accordance with the ventilation requirements of Ehapter 4 the Building Code
and this code.
"Section 504.6; changed to read as follows:
504.6 Domestic clothes dryer ducts. Ducts shall have a smooth interior finish with joints running in the
direction of the airflow. The maximum length 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 '/z 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, measuring in the direction of airflow. The
exhaust duct shall be a minimum nominal size of 4 inches (102 mm) in diameter. The size of duct shall
not be reduced along it's developed length nor at the point of termination.
The entire exhaust system shall be supported and secured in place. Flexible duct connectors used in
connection with domestic dryer exhausts shall be die; not more than 6 feet (1829 mm) in length and
an approved type. Flexible duct connectors shall not be concealed within construction.
"Section 505.1; add an exception to read as follows:
Exception: Ducts for domestic kitchen downdraft grill-range 1range ventilation installed
under a concrete slab floor may be of approved Scheduled 40 PVC provided:
1. The under-floor trench in which the duct is installed shall be completely backfilled
96 IMC 10 Of 1 11/20/97
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with sand or ravel.
2. Not more than 1 inch (25.4 mm) of 6 inch diameter (152 mm) PVC coupling may
protrude above the concrete floor surface.
3. PVC pipe joints shall be solvent cemented to provided an air- and grease-tight duct
4. The duct shall terminate above grade outside the building and shall be equipped with
a backdraft damper.
"Section 506.12; changed to read as follows:
506.12 Duct enclosure. A grease duct serving a Type I hood that penetrates a ceiling, wall or floor shall
be enclosed ...(bulk of paragraph unchanged)... through the use of weather-protected openings. The
enclosure shall be separated from the duct by a minimum of 6 3 inches (4-54 76 mm) and a maximum of
12 inches (305 mm) and shall serve a single grease exhaust duct system.
Exception: The shaft enclosure provisions of Section 506.12 shall not be required
where a duct penetration is protected with a through-penetration protection system tested
in accordance with " STT 4 E814. the Building Code having an "P and "T" rating equal
(remainder of section to remain unchanged)... construction or product.
"Section 508.1; changed to read as follows:
508.1 Makeup air. Makeup air shall be supplied during the operation of the kitchen exhaust system. The
exhaust and makeup air systems shall be connected by an electrical interlocking switch to insure that
makeup air is provided whenever the exhaust system is in operation. The amount of makeup air supplied
shall be approximately equal to the amount of exhaust air. The makeup air shall not reduce the
effectiveness of the exhaust system. Makeup air shall be provided by gravity or mechanical means or both.
Compensating hoods shall extract at least 20 percent of their required exhaust airflow from the kitchen
area.
Exception: This section shall not apply to dwelling units.
"Section 509.1; change the exception to read as follows:
Exception: Steam kettles, steam tables and equipment that as used does not create grease-
laden vapors are not required to be protected by an automatic fire-extinguishing system.
"Section 509.2; changed to read as follows:
509.2 Type of system. The automatic fire suppression system shall be of a type recognized for protection
of commercial cooking (bulk ofparagraph unchanged)... operations. The system shall be installed in
accordance with this code, its listing and the manufacturer's installation instructions. Other Ao atie fire
suppression systems shall be of an approved design and shall be one of the following types shall be
96 IMC 11 of 1 11/20/97
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«ns..waavd aaa ta.vvva utuavV with the 1V1V1 V11VVU JLCl11U
Carbon-dioxide extinguishing system,'`T~+LA-4i.
Automatic sprinkler system, NRLA .
Foam-water sprinkler system or foam-water spray systems, NF-PA 6.
Dry-chemical extinguishing systems, NF-PA 4 7.
Wet-chemical extinguishing systems, NF-PA 17A.
'Section 510.1; changed to read as follows:
510.1 General. This section shall govern the design and construction of duct systems for hazardous
exhaust and shall determine (bulk ofparagraph unchanged) posing a health hazard, such as toxic or
corrosive materials. For the purposes of this section, the health-hazard rating of materials shall be as
specified in NFPA 704 or other approved standards.
"Section 510.6; changed to read as follows:
510.6 Penetrations. Penetrations of structural elements by a hazardous exhaust system shall conform to
Sections 510.6.1 through 510.6.4.
510.6.1 Floors. Hazardous exhaust systems that penetrate a floor/ceiling assembly shall be enclosed
in a fire-resistance-rated shaft constructed in accordance with the building code.
510.6.2 Wall assemblies. Hazardous exhaust duct systems that penetrate fire-resistance-rated wall
assemblies shall be enclosed in fire-resistance-rated construction from the point of penetration to the
outlet terminal, emeept where the ittterior of the dttet is equipped with ftn approved automatie fire
ion system. Ducts shall be enclosed in accordance with the building code requirements for
shaft construction and such enclosure shall have a minimum fire-resistance-rating of not less than the
highest fire-resistance-rated wall assembly penetrated.
510.6.3 Fire walls. Ducts shall not penetrate a any area separation fire wall or any four hour rated
occupancy separation fire wall as defined in the Building Code.
510.6.4 Fire dampers. Fire dampers are not required permitted at penetrations of fire-resistance-rated
assemblies. An approved automatic fire suppression system shall be installed in the duct at the point
of penetration of the assembly as noted in Section 510.7.
"Section 510.7; changed to read as follows:
510.7 Suppression required. Ducts shall be protected with an approved automatic fire suppression
system, installed in accordance with the building code, at the entrance point of the duct and at the
penetration point of fire-rated-assemblies as noted in Section 510.6.4.
Exception: An approved automatic fire suppression system shall not be required
in ducts conveying materials, fumes, mists and vapors that are nonflammable and
noncombustible.
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**Section 510.8.3; changed to read as follows:
510.8.3 Explosion relief. Systems exhausting potentially explosive mixtures shall be protected with an
approved explosion relief system or by an approved explosion prevention system
itt eo- aftee NFP ^ An explosion relief system shall be designed to minimize the structural and
mechanical damage resulting from an explosion or deflagration within the exhaust system. An explosion
prevention system shall be designed to prevent an explosion or deflagration from occurring.
**Section 601.1; delete the exception.
**Section 603.17; changed to read as follows:
603.17 Location. Ducts shall not be installed in or within 6 4 inches (4--5,2 101 mm) of the earth,
except where such ducts comply with Section 603.12.
**Section 604.1; changed to read as follows:
604.1 General. Duct insulation shall conform to the requirements of Sections 604.2 through 604.11
and Table No. 604.1. Should there be any conflicts between this section and the energy code, when
adopted, the energy code shall take precedent.
**Table No. 604.1 added to read as follows:
Table 604.1 - Insulation of Ducts
DUCT LOCATION INSULATION TYPES HEATING INSULATION TYPES
MEC14ANICALLY COOLED ZONE' HEATING ONLY
On roof on exterior of building- C. VZ and W I A and W
II Band W
III C and W
Attics, g-araaes and crawl spaces A and V2 I A
II A
III B
In walls.' within floor-ceiling spaces' A and Vz I A
II A_
III B
Within the conditioned space or in None required None required
basements: return ducts in air plenums
Cement slab or within g-round 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 Decree Dam
Zone I below 4.500 D.D.
Zone II 4.501 to 8.000 D.D.
Zone III over 8.001 D.D.
?Vapor 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 21/:, percent column of dry-bulb and mean coincident wet-bulb temperature exceeds 60 degrees F (15.4 degrees Q.
96 IMC 13 of 1 11/20/97
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'-Insulation may be omitted on that portion of a duct which is located within a wall- or a floor-ceiling space when
3=' Both sides of the space are exposed to conditioned air.
3=Z The space is not ventilated.
3=3 The space is not used as a return plenum.
L' The space is not exposed to unconditioned air.
Ceilings which form plenums need not be insulated.
INSULATION TYPES4:
A - A material with an installed conductance of 0.48 (2.72 W/(m*K)l or the equivalent thermal resistance of 2.1 [0.367 (m*K)/Wl
Example of materials capable of meeting the above requirements:
1-inch (25 mm), 0.60 lb./cu. ft. (9.6 Wm') mineral fiber, rock slag or Blass blankets
'/z-inch (13 mm), 1.5 to 3 ]b./cu. ft. (24 to 48 k0m3) mineral fiber blanket duct liner.
-inch (13 mm), 3 to 101b./cu. ft. (48 to 160 ke/m3) mineral fiber board.
B - A material with an installed conductance of 0.24 [1.36 W/(m*K)l or the equivalent thermal resistance of 4.2 [0.735 (m*K)/Wl
Example of materials capable of meeting the above requirements:
2-inch (51 mm), 0.60 lb./cu. ft. (9.6 kg/m3) mineral fiber, rock, slag or Blass blankets
1-inch (25 mm), 1.5 to 3 1b./cu. ft. (24 to 48 Wm3) mineral fiber blanket duct liner.
1-inch (25 mm), 3 to 10 lb./cu. ft. (48 to 160 Wm3) mineral fiber board.
C - A material with an installed conductance of 0.1610.9 W/(m*K)l or the equivalent thermal resistance of 6.3 f 1.1 (m*K)/Wl.
Example of materials capable of meeting the above requirements:
3-inch (76 mm), 0.601b./cu. ft. (9.6 Wm') mineral fiber, rock, slag or glass blankets
1'/~-inch (38 mm), 1.5 to 3 lb./cu. ft. (24 to 48 U/m3) mineral fiber blanket duct liner.
1'/z-inch (38 mm), 3 to 10 lb./cu. ft. (48 to 160 UW) mineral fiber board.
V- Vapor Retarders: Material with a perm rating not exceeding 0.5 perm 129 n2/(Pa*s*m2)l. All joints to be sealed
W - Approved weatherproof barrier.
!The 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.
"Section 604.11 is deleted.
"Section 606.3; changed to read as follows:
606.3 Installation. Smoke detectors required by this section shall be installed in accordance with NFPA
7-2 the manufacturer's installation instructions and as required by the code official. The required smoke
detectors shall be installed to monitor the entire airflow conveyed by the system including return air and
exhaust or relief air. Access shall be provided to smoke detectors for inspection and maintenance.
"Section 607.2; changed to read as follows:
607.2 Smoke dampers. Smoke dampers shall be installed where required by the building code, shall be
listed and labeled, shall (bulk of paragraph unchanged) or a single-station, spot-type detector
installed at the point of penetration and listed for releasing service. `'make etee`io sfta4 be eteeardanee
with NF-PA Smoke dampers shall also close whenever the fan serving the duct system is shut off.
96 IMC 14 of 1 11/20/97
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**Section 805.4.1; add a sentence to read as follows:
The ventilating system shall be installed in a manner that will avoid penetrating any fire rated assemblies
which would require a damper as required by the Building Code
**Section 909; changed to read as follows:
VENTED AND UNVENTED GAS-FIRED DECORATIVE APPLIANCES
909.1 Vented Appliances General. Vented gas-fired decorative appliances shall be listed and labeled and
shall be installed in accordance with the manufacturer's installation instructions. Such appliances shall
be tested in accordance with ANSI Z21.50 and shall be designed and equipped as specified in Section
907.2.
909.2 Unvented Appliances. Unvented gas-fired decorative appliances shall be listed and labeled and
shall be installed in accordance with the manufacturer's installation instructions Such appliances shall
be equipped with an oxv eg n-depletion-sensitive safety shutoff system as described in Section 926.5. This
appliance shall not be installed in a bedroom or bathroom.
**Section 920.1 and 920.2; changed to read as follows:
920.1 General. The installation of gas-fueled and liquid-fueled stationary internal combustion engines
and gas turbines, including fuel storage and piping, shall meet the requirements of ~T~T this code, the
Building Code and the Fire Code.
920.2 Powered equipment. Permanently installed equipment powered by internal combustion engines
and turbines shall be installed in accordance with the manufacturer's installation instructions and in
accordance with NFPA this code, the Building Code and the Fire Code.
**Section 926.2; changed to read as follows:
926.2.1 Prohibited use. An unvented room heater shall not be used as the sole source of comfort heating
in a dwelling unit.
Exception: Existing approved unvented heaters may continue to be used in dwelling units in
accordance with the code provisions in effect when installed when approved by the Code Official unless
an unsafe condition is determined to exist as described in Section 108.7.
926.2.2 Unvented room heaters shall not be installed in bathrooms or bedrooms.
Exceptions: 1. Where approved by the code official, one listed wall-mounted unvented room heater
equipped with an oxygen depletion safety shutoff system shall be permitted to be installed in a bathroom
provided that the input rating shall not exceed 6000 Btu per hour (1760 W/jW and combustion and
ventilation air is provided as specified in accordance with the manufacturer's installation instructions
2. Where approved by the Code Official, one listed wall-mounted unvented room heater equipped
96 IMC 15 of 1 11/20/97
15
with an oxygen depletion safety shutoff system shall be permitted to be installed in a bedroom provided
that the input rating shall not exceed 10,000 Btu per hour 2930 W/hr) and combustion and ventilation air
is provided in accordance with the manufacturer's installation instructions
"Section 928.1; changed to read as follows:
928.1 General. Kerosene and oil-fired stoves shall be listed and labeled and shall be installed in
accordance with the conditions of the listing and the manufacturer's installation instructions. Kerosene
and oil-fired stoves shall comply with TT~T this code, the Fire Code and the Building Code. Oil-fired
stoves shall be tested in accordance with UL 896.
"Section 1204.1 and 1204.2; changed to read as follows:
1204.1 Insulation characteristics. Pipe insulation installed in buildings shall conform to the requirements
of the energy code, when adopted, shall be tested in accordance with ASTM E 84 and shall have a
maximum flame spread rating of 25 and a smoke-developed rating not exceeding 450. Insulation installed
in an air plenum shall comply with Section 602.2.1.
Exception: This section shall not apply to one- and two-dwellings.
1204.2 Required thickness. Hydronic piping shall be insulated to the thickness required by the energy
code, when adopted.
"Sections 1304.18 and 1304.18.1; changed to read as follows:
1304.18 Testing of piping. Before any system of gas piping is finally put in service, it shall be tested to
ensure that it is gas tight. Where any part of the system is to be enclosed or concealed, this test shall
precede the work of closing in. To test for tightness, the piping shall be filled with air or inert gas, but not
with any other gas or liquid. Testing,
inspeetiatt mtd purging of g -items shall eamply with
TTY
The gas piping shall stand a pressure of not less than ten (10) pounds der square inch (68.9 kPa) gauge
pressure, or at the discretion of the Administrative Authority, the piping and valves may be tested at a
pressure of at least six (6) inches 152 mm) of mercury, measured with a manometer or slope gauge Test
pressures shall be held for a length of time satisfactory to the Administrative Authority, but in no case for
less than fifteen (15) minutes, with no perceptible drop in pressure. For welded piping and for piping
carrying as at pressures in excess of fourteen (14) inches water column pressure (3.48 kPa the test
pressure shall not be less than sixty (60) pounds per square inch (413.4 kPa) and shall be continued for a
leny-th of time satisfactorv to the Administrative Authority, but in no case for less than thin (30) minutes
1304.18.1 Test instruments. Test pressure shall be measured with an approved instrument. All necessary
apparatus for conducting tests shall be furnished by the permit holder.
96 IMC 16 of 1 11/20/97
16
**Section 1401.1 add a second paragraph to read as follows:
Should there be any conflict between this chapter and the Plumbing Code the Plumbing Code shall
take precedence.
**Section 1401.2 is changed to read as follows:
1401.2 Storage systems. Fuel oil storage and piping systems shall be installed in accordance with the
requirements of this code, and the fire prevention code attd ?4FP 3
**Sections 1401.2.1, 1401.2.2 and 1401.2.3 are deleted.
**Any section or table not reprinted herein shall be assumed to be deleted. Chapter 15 is changed to
only read as follows:
CHAPTER 15
SECTION 1501- GENERAL
1501.1 Scope. This chapter shall govern the construction, installation, alteration and repair of systems and
equipment intended to utilize solar energy for space heating or cooling, domestic hot water heating,
swimming pool heating or process heating.
1501.2 Potable water supply. Potable water systems shall be protected against contamination in
accordance with the plumbing code.
1501.3 Heat exchangers. Heat exchangers used in domestic water-heating systems shall be approved for
the intended use. The system shall have adequate protection to ensure that the potability of the water
supply and distribution system is properly safeguarded.
1501.5 Ducts. Ducts utilized in solar heating and cooling systems shall be constructed and installed in
accordance with Chapter 6 of this code.
**NFPA 70-96 is changed to read as follows:
70 - 96 National Electrical Code as adopted by this jurisdiction
301.7, 602.2.1, 911.7, 1106.8, 1106.9
96 IMC 17 of 1 11/20/97
17
END
96 IMC 18 Of 1 11/20/97
18
Star-Telegram rtU. I.U. NU. L"L i148254
AD ORDER NO. 12567660
400 W.SEVENTH STREET•FORT WORTH,TEXAS 76102 ACCOUNT NO. C I T 5 7
THE STATE OF TEXAS
)unty of Tarrant
Before me, a Notary P in and for said County and State, this day
personally appeared 1-ACMYY\\ -e__ V; ;Q... k\ Billing Specialist for the
Star-Telegram, published by the Star-Telegram Inc. at Fort Worth, in Tarrant County, Texas; and
who, after being duly sworn, did depose and say that the following clipping of an advertisement was
published in the above named paper on the following dates:
i DATE AD ORDER NO. DESCRIPTION AD SIZE TOTAL INCH/LINE RATE AMOUNT
3/06ME ' 125676601 ORDINANCE NO . 69 I358 1x 49L 49 QUOTE 39 . 69
ORDINANCE NO.694 03/06"-03/06
AN ORDINANCE ADOPTING
THE INTERNATIONAL ME-
CHANICAL CODE, 1996 EDI-
TION-- - AND THE 1997 SUP-
PLEMENT TO THE INTERNA-
TIONAL MECHANICAL
CODE,' PROVIDING FOR THE
ADOP1ION OF LOCAL
AMENDMENTS THERETO; ---
PROVIDING THAT THIS ORDI-
NANCE SHALL BE CUMULA-
TIVE OF ALL ORDINANCES;
PROVIDING A SEVERABILITY
CLAUSE,PROVIDING A SAV-
INGS CLAUSE- PROVIDING
FOR PUBLICATION IN PAM-
PHLET FORM- PROVIDING
FOR PUBLICATION IN THE
OFFICIAL NEWSPAPER;AND
PROVIDING AN EFFECTIVE
DATE.
SECTION6
''y person, firm or corpora-
an who violates, disobeys, S
nits, neglects or refuses
comply with or who re-
stsh prhe enforcement of any
rdi- \ '
` of cepshall°be f_thisorot SWORN TO BEFORE ME, THIS THE \1�� DAY OF
Hance shall be fined not •
more than Two Thousand
Dollars ($2,000.00) for
each offense.Each day that 4`;;,4,�
a violation is permitted to ex- .. .• RHONDA R. GOKE Notary Public10ist shall constitute a sepa- gib' t •%I,t •
rate offense. )%2. n�i COMMISSION EXPIRES
PASSED AND APPROVED )1.1���•i ,
THIS THE 3RD DAY OF �s SEPTEMBER 8, 1999
MARCH 199E DURING THE '�it'ii,/�••]CJ
REGULAR CITY COUNCIL � h,e.°s"w_ TARRANT COUNTY,TEXAS
MEETING OF THE CITY OF
SOUTHLAKE,TEXAS. r4�
/s/Rick Stacy,Mayor
/s/ATTEST:
CSt/ySandr L.a LeGrand, ,)IS ORIGINAL INVOICE AND RECONCILE WITH MONTHLY STATEMENT. THANK YOU!
APPROVED AS TO FORM: '!
CisittyyAttorAllen TAttorney
Jr., ,h `�_TEAR ALONG THIS PERFORATION AND RETURN THE LOWER PORTION WITH YOUR PAYMENT-----4,
Starh!'e1egranui
REMIT TO: , 400 W.SEVENTH ST. •FORT WORTH,TEXAS 76102
ACCOUNT AMOUNT
12567660 NUMBER C I T 5 7 DUE 39 . 69
PAGE 1 01 IF ANY QUESTIONS, PLEASE CALL(817)390-7885
CITY OF SOUTHLAKE
1
667 N CARROLL AVE PLEASE PAY
SOUTHLAKE , TX 76092-9595 THIS AMOUNT 39 . 69
PLEASE WRITE IN AMOUNT ENCLOSED
Star-Telegram FED. I.D. NO. 22-3148254
AD ORDER NO. 12483827
400 W.SEVENTH STREET•FORT WORTH,TEXAS 76102 ACCOUNT NO.
CIT57
TI-IE STATE OF TEXAS
unty of Tarrant
Before me, a Notary Public in and for said County and State, this day
personally appeared TAMMIE BRYANT Billing Specialist for the
Star-Telegram, published by the Star-Telegram Inc. at Fort Worth, in Tarrant County, Texas; and
who, after being duly sworn, did depose and say that the following clipping of an advertisement was
published in the above named paper on the following dates:
DATE AD ORDER NO. DESCRIPTION AD SIZE TOTAL INCH/LINE RATE AMOUNT ,
2/20ME 12483827 NOTICE OF PUBLIC I358 1x 56L 56 . 79 44 . 24
NOTICE
OF PUBLIC 02/211—D-2 0-/-2
Notice is hereby given to all in-
terested persons that the
City Council of the City Coun-
cil of the City of Southlake,
will be holding a public hear-
ing during the Regular City
Council meeting to be held
on March 3, 1998 at 6:00
p.m., in the City Council
Chambers of City Hall 667
North Carroll Avenue,South-
lake,Texas.
Purpose of the hearing is,to - -----
consider the secondeg reading
ofORDI IINANCE NO.694
AN ORDINANCE ADOPTING
THE INTERNATIONAL ME-
CHANICALT CODE,
19996SUP-
PLEMENT TO THE INTERNA-
TIONAL MECHANICAL
CODE PROVIDING FOR THE S I
ADOPTION OF LOCAL
AMENDMENTS THERETO;
PROVIDING THAT THIS ORDI-
NANCE SHALL BE NANULA-
CES; WORN TO BEFORE ME, THIS THE DAY OF
S� PROOF ALL ORDINANCES; 23th FEBRUARY 1998
PROVIDING A SEVERABILITY
CLAUSE' PROVIDING A SAV- - -r•� z.�.p. ,�, ��
INGS CLAUSE- PROVIDING f-i.: �:,�
FOR PUBLICATION INO PAM-DING --':.•`' `'11?. RHONDA R. GOKE Notary Public 10�\ thy\ ,( A `�• fl .�-
PHLET FORM PROVIDING -` '•f,�
F PUBLICATION RN THE -' 1 COMMISSION EXPIRES
OFFICIAL NEWSPAPER;AND
PROVIDING AN EFFECTIVE
DATE. +- SEPTEMBER 8
SECTION 6 •' �‘�OF-E= r 1999 TARRANT COUNTY,TEXAS
Any person,.firm or corpora a"`"'�
Lion who violates, disobeys,
omits, neglects or refuses
to comply with or who re-
F ofstheprovsionsofthisfordY ORIGINAL INVOICE AND RECONCILE WITH MONTHLY STATEMENT. THANK YOU!
nance shall be fined not
more than Two Thousand
Dollars ($2,000.00) for —TEAR ALONG THIS PERFORATION AND RETURN THE LOWER PORTION WITH YOUR PAYMENT-------4,
each offense.Each day that
a violation is permitted to ex-
ist shall constitute a sepa-
rate offense.
/s/Sandra L.LeGrand,
City Secretary
City of Southlake
Star:Ie!egrarn
REMIT TO: , 400 W.SEVENTH ST. •FORT WORTH,TEXAS 76102
CRY T-t^7 ; My ACCOUNT AMOUNT
12483827 NUMBER CIT57 DUE 44 . 24
PAGE o1 IF ANY QUESTIONS, PLEASE CALL(817)390-7885
CITY OF SOUTHLAKE PLEASE PAY
667 N CARROLL AVE THIS AMOUNT1
SOUTHLAKE, TX 76092-9595 44 , 24
PLEASE WRITE IN AMOUNT ENCLOSED