HomeMy WebLinkAboutORD 2001-093 ORDINANCE NO. 2001-93
�° " AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS AMENDING THE GRAPEVINE CODE OF
ORDINANCES BY AMENDING CHAPTER 7, BUILDINGS AND
CONSTRUCTION, RELATING TO THE ADOPTION OF THE
2000 INTERNATIONAL RESIDENTIAL CODE FOR ONE AND
TWO FAMILY DWELLINGS AS PUBLISHED BY THE
INTERNATIONAL CODE COUNCIL, PROVIDING
AMENDMENTS TO SAME, REPEALING CONFLICTING
ORDINANCES; PROVIDING A SEVERABILITY CLAUSE;
PROVIDING A PENALTY, NOT TO EXCEED TWO THOUSAND
DOLLARS ($2,000.00) FOR EACH SEPARATE OFFENSE AND
A SEPARATE OFFENSE SHALL BE DEEMED COMMITTED
UPON EACH DAY DURING OR ON WHICH A VIOLATION
OCCURS; DECLARING AN EMERGENCY AND PROVIDING AN
EFFECTIVE DATE
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF GRAPEVINE, TEXAS:
- Section 1. That Chapter 7, Buildings and Construction, Article I is hereby
amended in the following particulars:
� � A. Sec. 7-1. Building Code — Adopted is hereby amended by adding a
second paragraph to read as follows:
"This code and its amendments shall not apply to one and two family
dwellings and multi-family dwellings of not more than three stories with
individual exits and property lines befinreen dwelling units and their
accessory buildings unless otherwise stated. Such structures shall be
regulated by the current International Residential Code as adopted by the
city."
B. Sec. 7-3. Same — Amendments, is hereby amended by amending Sec.
106.2, Work exempt from permit, by deleting Subsections 9 and 10 and renumbering
the remainder of the section.
C. Sec. 7-3. Same —Amendments, Section 302.4 Fire Ratings for Occupancy
Separations, as amended by the City, is hereby deleted in its entirety.
D. Sec. 7-3. Same — Amendments, Section 1006.9 Handrails, as amended
by the City, is hereby deleted in its entirety.
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E. Sec. 7-3. Same — Amendments, Section 1203.4.2 Yards, as amended by
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the City, is hereby amended to read as follows:
"Every yard shall be not less than three feet in width for one-story and two-
story buildings. For buildings more than two stories in height, the
minimum width of the yard shall be increased at the rate of one foot for
each additional story. For buildings exceeding 14 stories in height, the
required width of yard shall be computed on the basis of 14 stories."
F. Sec. 7-3. Same —Amendments, Table No.5-A, as amended by the City, is
hereby deleted in its entirety.
G. Sec. 7-4. Creation of Building Board of Appeals, composition and
qualification of inembers, first paragraph shall be amended to read as follows:
"The City Council shall appoint seven members to the following boards
who shall collectively and jointly serve as the membership of said boards;
Housing Advisory and Appeals Board as authorized by the Building Board
of Appeals as authorized by the 1994 Edition of the Uniform Building
Code, Plumbing Board of Appeals, Electrical Board of Appeals,
Mechanical Board of Appeals. The membership of each named board
shall consist of the same seven individuals. The boards named herein
shall be collectively called the Building Board of Appeals, hereinafter
referred to as the board."
H. Sec. 7-8. General contractors registration subsection (a) is amended to
read as follows:
"(a) Required; contents. Each contractor shall be required to maintain a
registration with the city before performing any type of construction work
regulated by the Grapevine Building Code. Each contractor shall furnish
the building inspection division with the following information:"
Section 2. That Chapter 7, Article V, Housing Code, is hereby deleted in its
entirety and replaced by the following:
� "ARTICLE V. RESIDENTIAL CODE
Section 7-140. Adoption
There is hereby adopted for the purpose of establishing rules and
regulations for the construction, alteration, removal, demolition,
equipment, use and occupancy, location and maintenance of buildings
and structures, that certain code known as the International Residential
Code, copyrighted by the International Code Council being particularly the
ORD. NO. 2001-93 2
2000 edition thereof, of which not less than three copies have been and
now are filed in the office of the city secretary, and the same is hereby
` adopted and incorporated as fully as if set out at length herein. The
provisions of this code shall regulate the construction of all one and two
family dwellings and multi-family dwellings with property lines between
units not more than three stories in height with a separate means of
egress and their accessory structures; subject to all amendments thereof
or superseding provisions contained in this chapter.
Section 7-141. Conflicts
When any portion of this code conflicts with any other code or ordinance
adopted by the City, the most restrictive requirement shall apply.
When any provision in this code conflicts with any other provision in this
code the most restrictive requirement shall apply.
All references made to electrical provisions shall be replaced with the
words "Electrical Code adopted by this jurisdiction".
All references to the International Building Code shall mean the building
-- code adopted by the City.
rt, w All references to the International Plumbing Code shall mean the plumbing
code adopted by the City.
All references to the International Mechanical Code shall mean the
mechanical code adopted by the City.
Any item not specifically addressed by this code shall be regulated by the
current building code adopted by the City."
Section 3. That the Residential Code herein adopted is specifically amended
as follows:
"Sec. 7-142. Amendments:
Sec. R102.4. Referenced codes and standards is amended to read as
follows:
Sec. R102.4. Referenced codes and standards. The codes, when
specifically adopted, and standards referenced in this code shall be
considered part of the requirements of this code to the prescribed extent
' of each such reference. Whenever amendments have been adopted to
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ORD. NO. 2001-93 3
the referenced codes and standards, each reference to said code and
standard shall be considered to reference the amendments as well. Any
reference made to NFPA 70 or the ICC E/ectrica/ Code or any other
reference to electrical provisions shall mean the Electrical Code and its
amendments as adopted.
Where differences occur between provisions of this code and referenced
codes and standards, the provisions of this code shall apply.
Exception: Where enforcement.....{remainder of exception unchanged}....
Sec. R105.2. Work exempt from permit. Item #1; is amended as follows:
Sec. R105.2. Work exempt from permit.
{Bulk of section to remain unchanged}
Building:
1. One-story detached accessory structures, not exceeding 120
square feet (11.15 mz) in floor area require permits but are exempt
from fees.
{Remainder of section to remain unchanged.}
A Sec. R105.3.2. Time limitation of application is hereby amended in its
entirety to read as follows:
Sec. R105.3.2. Time limitation of application. Applications for which no
permit is issued within 180 days following the date of application shall
expire by limitation, and plans and other data submitted for review may
thereafter be returned to the applicant or destroyed by the Building
Official. The Building Official may extend the time for action by the
applicant for a period not exceeding 180 days on request by the applicant
showing that circumstances beyond the control of the applicant have
prevented action from being taken. No application shall be extended more
than once. In order to renew action on an application after expiration, the
applicant shall resubmit plans and pay a new plan review fee.
Sec. R105.5. Expiration is amended in its entirety to read as follows:
Sec. R105.5. Expiration. Every permit issued by the Building Official
under the provisions of this code shall expire by limitation and become null
and void if the building or work authorized by such permit is not
M'`� commenced and an inspection requested within 180 days from the date of
such permit, or if the building or work authorized by such permit is
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ORD. NO. 2001-93 4
' suspended or abandoned at any time after the work is commenced for a
period of 180 days or if more than 180 days pass between any two
"�''"� inspections of the building or work, including the final inspection. In the
event of an expired permit, before such work can be recommenced,
and/or inspections requested, a new permit shall be first obtained to do so,
and the fee therefor shall be one-half the amount required for a new
permit for such work, provided no changes have been made or will be
made in the original plans and specifications for such work; and provided
further that such suspension or abandonment has not exceeded 30 days.
In order to renew action on a permit more than 30 days after expiration,
the permittee shall pay a new full permit fee. The Building Official shall
have the sole discretion, except as otherwise provided herein, to extend
permits and inspection deadlines for projects of an unusually large scope.
Any building or work subject to a permit which has expired for a period of
more than 30 days shall be declared a nuisance in accordance with
Chapter 7, Article II of the Grapevine Code of Ordinances.
Any permittee holding an unexpired permit may apply for an extension of
the time within which work may commence under that permit when the
permittee is unable to commence work within the time required by this
section for good and satisfactory reasons. The Building Official may
extend the time for action by the permittee for a period not exceeding 180
days on written request by the permittee showing that circumstances
�, beyond the control of the permittee have prevented action from being
taken. No permit shall be extended nor renewed more than once.
Sec. R108. Fees, is amended by the addition of Table R108, Permit Fees,
attached hereto as Exhibit "A", and incorporated herein by reference.
Sec. R108.5. Refunds, is amended in its entirety and replaced with the
following:
Sec. R108.5. Refunds. Plan review fees are not refundable. 80% of the
building, electrical, mechanical, and/or plumbing fee may be refunded,
provided that no inspections have been performed.
Sec. R108. Fees is hereby amended by the addition of a new Section
R108.6 to read as follows:
Sec. R108.6. Investigation, Fees, work without permit. Whenever any
work for which a permit is required by this code has been commenced
without first obtaining said permit, a special investigation shall be made
before a permit may be issued for such work. An investigation fee, in
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ORD. NO. 2001-93 5
addition to the permit fee, shall be collected whether or not a permit is
`� then or subsequently issued. The investigation fee shall be equal to the
amount of the permit fee required by this code. The minimum
� ` investigation fee shall be the same as the minimum permit fee set forth in
the fee schedule adopted by the City. The payment of such investigation
fee shall not exempt any person from compliance with all other provisions
of this code nor from any penalty prescribed by law.
Sec. R109.1.3. F/oodplain inspections; is deleted in its entirety.
Sec. R110. Certificate of Occupancy (R110.1 through R110.4); is hereby
deleted in its entirety.
Sec. R112.1. Board ofAppeals -General is amended to read as follows:
Sec. R112.1. General. In order to hear and decide appeals of orders,
decisions or determinations made by the Building Official relative to the
application and interpretation of this code, there shall be and is hereby
created a Board of Appeals. Such board shall consist of the members of
the Building Board of Appeals established in Article I of this code. The
Building Official shall be an ex officio member of said board but shall have
no vote on any matter before the board. The Board of Appeals shall be
appointed by the City Council and shall hold office at the pleasure of the
City Council. The board shall adopt rules of procedure for conducting its
� 4 business, and shall render all decisions and findings in writing to the
appellant with a duplicate copy to the Building Official.
Sec. R112.2.1. Determination of substantial improvement in areas prone
to flooding, is hereby deleted in its entirety.
Sec. R112.2.2. Criteria for issuance of a variance for areas prone to
flooding, is hereby deleted in its entirety.
Sec. R202. Definitions, definition of "Townhouse" is amended to read as
follows:
TOWNHOUSE. A single-family dwelling unit constructed in a group of
attached units separated by property lines in which each unit extends from
foundation to roof and with open space on at least two sides.
Table R301.2(1). Climatic and Geographic Design Criteria; is amended to
read as follows:
See Exhibit "B"
Sec. R302.1. Exterior Walls is amended to read as follows:
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ORD. NO. 2001-93 6
Sec. R302.1. Exterior Walls. Exterior walis with a fire separation distance
of less than 3 feet (914mm) shall have not less than a one-hour fire-
``'� resistive rating with exposure from both sides, with the sole exception of
walls of structures located on property zoned R-5.0, as provided for in
Section 16, Zero Lot Line District, of the Grapevine Comprehensive
Zoning Ordinance No. 82-73. Projections shall not extend beyond the
distance determined by the following two methods, whichever results in
the lesser projections:
1. A point one-third the distance to the property line from an assumed
vertical plane located where protected openings are required.
2. More than 12 inches (305 mm) into areas where openings are
prohibited.
Projections extending into the fire separation distance shall have not less
than one-hour fire-resistive construction on the underside. The above
provisions shall not apply to walls which are perpendicular to the line used
to determine the fire separation distance.
Exceptions:
1. Tool and storage sheds, playhouses and similar structures exempted
}, A from permits by Section R105.2 are not required to provide wall
protection based on location on the lot. Projections beyond the
exterior wall shall not extend over the lot line.
2. Open metal carport structures may be constructed within zero (0) feet
of the property line without fire-resistive or opening protection when the
location of such is approved as required by other adopted ordinances.
Sec. R302.2. Openings, is amended to read as follows:
Sec. R302.2. Openings. Openings shall not be permitted in the exterior
wall of a dwelling or accessory building with a fire separation distance less
than 3 feet (914 mm), with the sole exception of structures located on
property zoned R-5.0, as provided for in Section 16, Zero Lot Line District,
of the Grapevine Comprehensive Zoning Ordinance No.82-73.
Exceptions:
1. Openings shall be permitted in walls that are perpendicular to the
line used to determine the fire separation distance.
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ORD. NO. 2001-93 7
2. Foundation vents installed in compliance with this code are
"� " permitted.
`%""� Sec. R303.3. Bathrooms. Exceptions; is amended to read as follows:
Sec. R303.3. Bathrooms. {Bulk of section unchanged}
Exceptions: The glazed areas shall not be required where artificial light
and a mechanical ventilation system, complying with one of the following,
are provided.
1. The minimum ventilation rates shall be 50 cfm (23.6 L/s) for
intermittent ventilation or 20 cfm (9.4 L/s) for continuous ventilation.
Ventilation air from the space shall be exhausted directly to the
outside.
2. Bathrooms 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.
Sec. R303.6. Required heating, is amended to read as follows:
Sec. R303.6. Required heating. Every dwelling unit shall be provided with
�, , heating facilities capable of maintaining a minimum room temperature of
68°F (20°C) at a point 3 feet (914mm) above the floor and 2 feet (610 mm)
from exterior walls in all habitable rooms at the design temperature.
Sec. R314.8. Under stair protection, is amended to read as follows:
Sec. R314.8. Under stair protection. Enclosed accessible space under
stairs shall have walls, under stair surFace and any soffits protected on the
enclosed side with 5/8-inch (15.8 mm) fire-rated gypsum board or one-
hour fire-resistive construction.
Sec. R321.1. Two-family dwellings, is amended by the addition of a
second exception to read as follows:
Sec. R321.1. Two-family dwellings, {Bulk of section to remain unchanged}
Exceptions:
1. {existing exception unchanged}
2. Two-family dwelling units that are also divided by a property line
° through the structure shall be separated as required for
townhouses.
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ORD. NO. 2001-93 8
` Sec. R322.1. Moisture control, is amended to read as follows:
`�""� Sec. R322.1. Moisture control. In all framed walls, floors and roof/ceilings
comprising elements of the building thermal envelope, a vapor retarder,
when installed, shall be installed in a manner so as to not trap moisture.
{Exceptions deleted.}
Sec. R326. Accessibility is hereby deleted in its entirety.
Sec. R327.1. General, is hereby deleted in its entirety.
Figure 602.6.1. is hereby amended by showing 16 gage metal ties on both
top plates.
Sec. R701.1. Application is amended to read as follows:
Sec. R701.1. Application. The provisions of this chapter shall control the
design and construction of the interior and exterior wall covering for all
buildings. Regardless of other provisions of this code, the use of kraft
waterproof building paper or asphalt saturated rag felt is permitted only
when covered by a veneer approved by this code. The use of wood
shakes or wood shingles as an exterior wall covering is only permitted
�. when such materials meet minimum Class "C" roofing material standards
as demonstrated by a nationally recognized testing agency.
Sec. R703.7.4.1. Size and spacing, is amended by the adoption of a
second paragraph to read as follows:
Sec. R703.7.4.1. Size and spacing. {First paragraph to remain
unchanged.} For 3 '/4 square feet (0.302 m2) of wall area, the following
dimensions shall be adhered to:
1. When ties are placed on studs 16" o.c., they shall be spaced no
further apart than 29" vertically starting approximately 15" from the
foundation.
2. When ties are placed on studs 24" o.c., they shall be spaced no
further apart than 19" vertically starting approximately 10" from the
foundation.
{Exceptions to remain unchanged.}
- Sec. R703.7.4.2. Air space is amended by the addition of a second
paragraph to read as follows:
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ORD. NO. 2001-93 9
A Sec. R703.7.4.2. Air space. {First paragraph to remain unchanged.}
When using ties that will flex when pushed, spot bedding of cement mortar
'�'"'"� shall be installed on all ties.
Sec. R902.1. Roof covering materials is amended to read as follows:
Sec. R902.1. Roof covering materials. Roofs shall be covered with
materials as set forth in Section s R904 and R905. All roofing materials
shall be minimum Class "C" rated as demonstrated by a nationally
recognized testing agency. Classes A, B and C roofing required to be
listed by this section shall be tested in accordance with UL 790 or ASTM E
108. Roof assemblies with coverings of brick, masonry, slate, clay or
concrete roof tile, exposed concrete roof deck, ferrous or copper shingles
or sheets; and metal sheets and shingles, shall be considered Class A
roof coverings.
Sec. R907.1. General is amended to read as follows:
Sec. R907.1. General. Materials and methods of application used for
recovering or replacing an existing roof covering shall comply with the
requirements of this chapter. Repairs to existing roofs and roof coverings
- shall comply with the provisions of Chapter 34 of the International Building
Code, but more than 25 percent of the roof covering of any building shall
��,,x not be removed and replaced within a 12-month period unless the entire
roof covering is made to conform to the requirements for new roofing.
Exception: Reroofing shall not be required to meet the minimum design
slope requirement of one-fourth vertical in 12 units horizontal (2-percent
slope) in Section R905 for roofs that provide positive roof drainage.
The replacement materials for all or part of a roof shall comply with all of
the requirements of Section R902. In those cases where it proves
necessary to replace all or part of an ordinary wood shingled roof, and
minimum Class "C" roofing does not meet the exposure length of the
existing roof, Class "C" composition shingles may be overlaid on the
existing shingles, subject to the other provisions of this chapter.
Sec. R1005.2. Exterior air intake is amended to read as follows:
Sec. R1005.2. Exterior air intake. The exterior air intake shall be capable
of providing all combustion air from the exterior of the dwelling or from
spaces within the dwelling ventilated with outside air such as attic spaces.
The....{remainder of section unchanged}.
Sec. N1101.2. Compliance is amended to read as follows:
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ORD. NO. 2001-93 10
"` ' Sec. N1101.2. Compliance. Compliance with this chapter shall be
demonstrated by meeting the requirements of the applicable sections and
"�� � tables of this chapter. Where applicable, provisions are based on the
climate zoned where the building is located. The climate zone where the
building is located shall be based on zone assignments in Table N1101.2
for the county and state in which the building is constructed. Alternatively,
the climate zone shall be permitted to be determined by the Heating
Degree Days assigned by the Building Official.
It shall be the responsibility of the permit applicant to provide
documentation satisfactory to the Building Official that the provisions of
this chapter are met. When any local, State and/or federal law requires
review or inspection by certified personnel, it shall be the responsibility of
the permit applicant to obtain the services of such personnel.
Sec. N1101.2.1. Residential Buildings, Type A-1. Compliance shall be
demonstrated by one of the following:
1. Meeting the requirements of this chapter for buildings with a glazing
area that does not exceed 15 percent of the gross area of exterior
walls;
2. Meeting the requirements of this chapter for buildings with a glazing
area that is greater than 15 percent but not exceeding 20 percent of
the gross area of exterior walls and air conditioning equipment
rated 12 SEER or higher;
3. Meeting the requirements of this chapter for buildings with a glazing
area that is greater than 20 percent but not exceeding 25 percent of
the gross area of exterior walls and air conditioning equipment
rated 14 SEER or higher; or
4. Meeting the requirements of the International Energy Conservation
Code for residential buildings, Type A-1.
Sec. N1101.3. Materials and Equipment is hereby amended by the
addition of a new Section N1101.3.4. to read as follows:
Sec. N1101.3.4. Exterior basement or slab insulation. When susceptibility
to termite damage is classified as "very heavy" according to Table
R301.2(1), designs employing basement or slab exterior insulation
capable of harboring termites shall not be utilized.
Sec. N1102.1. Thermal performance criteria is amended to read as
X':"` � follows:
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ORD. NO. 2001-93 11
Sec. N1102.1. Thermal performance criteria. The minimum required
' insulation R-value or maximum required U-factor for each element in the
building thermal envelope (fenestration, roof/ceiling, opaque wall, floor,
�°� � slab edge, crawl space wall and basement wall) shall be in accordance
with the criteria in Table N1102.1.
Residential building, Type A-1, with greater than 25-percent glazing area;
residential buildings, Type A-2, with greater than 25-percent glazing area;
and any building in climates with HDD equal to or greater than 13,000;
shall determine compliance using the building envelope requirements of
the International Energy Conservation Code.
Table N1102.1. Thermal performance criteria is amended and replaced by
the attached Exhibit "C", which is incorporated herein by reference.
Sec. N1102.2. Maximum solar heat gain coefficient for fenestration
products is amended to read as follows:
Sec. N1102.2. Maximum solar heat gain coefficient for fenestration
products. The area-weighted-average solar heat gain coefficient (SHGC)
for glazed fenestration installed in climate zones with less than 3,500
HDD-) shall not exceed 0.40.
Sec. M1304. Type of fue/ is amended by the addition of a new section
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M1304.2 to read as follows:
Sec. M1304.2. Minimum burial depth. Underground fuel piping systems
shall be installed a minimum depth of 18 inches (458 mm) below grade.
Sec. M1305.1.3. Appliances in attics is amended to read as follows:
Sec. M1305.1.3. Appliances in attics. Attics containing appliances
requiring access shall be provided....{bulk of paragraph
unchanged�...sides of the appliance where access is required. 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 shall be provided by one of the following:
1, A permanent stair.
2. A pull down stair.
3. 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.
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ORD. NO. 2001-93 12
Sec. M1305.1.3.1. Electrical requirements is amended by the addition of a
sentence at the end of the paragraph to read as follows:
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Low voltage wiring of 50 Volts or less shall be installed in a manner to
prevent physical damage.
Sec. M1305.1.4.1. Ground clearance is amended to read as follows:
Sec. M1305.1.4.1. Ground clearance. Appliances supported from the
ground shall be level and firmly supported on a concrete slab or other
approved material extending above the adjoining grade a minimum of
three (3) inches (76 mm). Appliances suspended from the floor shall have
a clearance of not less than six (6) inches (152 mm) above the ground.
Sec. M1305.1.4.3. Electrical requirements is amended by the addition of a
sentence at the end of the paragraph to read as follows:
Low voltage wiring of 50 Volts or less shall be installed in a manner to
prevent physical damage.
Sec. M1307.3.1. Protection from impact is hereby deleted in its entirety.
4 Sec. M1501.2. Exhaust duct size is amended to read as follows:
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Sec. M1501.2. Exhaust duct size. The minimum diameter of the exhaust
duct shall be as recommended by the manufacturer, shall be at least the
diameter of the appliance outlet and shall be a minimum nominal size of
four (4) inches (102 mm) in diameter. The size of duct shall not be
reduced along its developed length nor at the point of termination.
Sec. M1501.3. Length limitation is amended to read as follows:
Sec. M1501.3. Length limitation. The maximum length of a clothes dryer
exhaust duct shall not exceed 25 feet (7620 mm) from the dryer location to
the wall or roof termination with not more than two bends. When extra
bends are installed, the maximum length of the duct shall be reduced two
and one-half (2.5) feet (762 mm) for each 45-degree (0.79 rad) bend and
five (5) feet (1524 mm) for each 90-degree (1.6 rad) bend that occur after
the first two bends, measuring in the direction of airflow. The maximum
length of the exhaust duct does not include the transition duct.
{Exception is unchanged}
� °� Sec. M1601.3.4. Duct insulation, Item #1; is amended to read as follows:
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ORD. NO. 2001-93 13
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Sec. 1601.3.4. Duct insulation.
1. Duct insulation shall conform to the requirements of Table
"���� M1601.3.4 and Section N1101.2. Should there be any conflicts
between this section and the energy efficiency provisions, the
energy efficiency provisions shall take precedence.
A vapor retarder in accordance with Table M1601.3.4 or aluminum
foil having a minimum thickness of 2 mils (0.051 mm), shall be
installed on the exterior of insulation on cooling supply ducts that
pass through nonconditioned spaces conducive to condensation.
Insulations having a permeance of 0.05 perms [2.87 ng/(Pa �s �m2)]
or less shall not be required to be covered.
Table M1601.3.4. Insulation Ducts is amended and replaced by the
attached Exhibit "D”, which is incorporated herein by reference.
Sec. M2005.2. Prohibited locations is amended to read as follows:
Sec. M2005.2. Prohibited locations. Fuel-fired water heaters shall not be
installed in a room used as a storage closet. Water heaters located in a
a bedroom or bathroom shall be installed in a sealed enclosure so that
combustion air will not be taken from the living space. Access to such
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enclosure may be from the bedroom or bathroom when through a solid
door, weather-stripped in accordance with the exterior door air leakage
requirements of the Intemational Energy Conservation Code and
equipped with an approved self-closing device. Direct-vent water heaters
are not required to be installed within an enclosure.
Sec. G2403. General definitions, definition of "Unvented Room Heater" is
amended to read as follows:
Sec. G2403. General definitions, UNVENTED ROOM HEATER. An
unvented heating appliance designed for stationary installation and utilized
to provide comfort heating. Such appliances provide radiant heat or
convection heat by gravity or fan circulation directly from the heater and
do not utilize ducts. For the purpose of installation, this definition shall
also include "Unvented Decorative Appliances."
All such equipment is prohibited by this code.
Sec. G2407.15. Combustion air ducts, is amended to read as follows:
- Sec. G2407.15. Combustion air ducts. Combustion air ducts shall comply
with all of the following:
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ORD. NO. 2001-93 14
°`"" 1. Ducts shall be of galvanized steel complying with Chapter 16 of this
code or of equivalent corrosion-resistant material approved for this
"'�''� application.
Exception: Unobstructed stud and joist spaces within dwelling units
shall not be prohibited from conveying combustion air, provided that
not more than one required fireblock is removed.
{Balance of section to remain unchanged.}
Sec. G2408.3. Private garages is hereby deleted in its entirety.
Sec. G2411.5. Identification is amended by the addition of a second
paragraph to read as follows:
Sec. G2411.5. Identification. {Bulk of section to remain unchanged.}
Both ends of each section of inedium pressure corrugated stainless steel �
tubing (CSST) shall identify its operating gas pressure with an approved
tag. The tags are to be composed of aluminum or stainless steel and the
following wording shall be stamped into the tag:
"WARNING
'/2 to 5 psi gas pressure
�� � Do Not Remove"
Sec. G2412.3. Sizing is amended by the addition of an exception to read
as follows:
Sec. G2412.3. Sizing {Bulk of section to remain unchanged.}
Exception: Corrugated stainless steel tubing (CSST) shall be a minimum
of '/Z inch.
Sec. G2413.5.3. Corrugated stainless steel tubing is hereby amended to
read as follows:
Sec. G2413.5.3. Corrugated stainless steel tubing. Corrugated stainless
steel tubing shall be tested and listed in compliance with the construction,
installation and performance requirements of AUSI/AGA LC 1, and the
following requirements:
1. A current model code evaluation report must exist for the product.
2. Each element of the system (pipe and all fittings) must be properly
° labeled.
���
ORD. NO. 2001-93 15
Complete installation instructions shall be on the jobsite at any time
" inspections may be performed.
"��� Pressure regulators shall be installed in a ventilated attic or other
nonhabitable space with direct ventilation to the exterior.
A shut off valve shall be installed ahead of the manifold and shut off
valves shall be installed at the manifold for each branch.
Each branch shall be clearly labeled at the manifold as to which appliance
it serves.
Sec. G2414.6. Piping in solid floors is hereby amended to read as follows:
Sec. G2414.6. Piping in solid floors. Piping in solid floors shall comply
with Section G2414.11.
Sec. G2414.9. Minimum burial depth is amended to read as follows:
Sec. G2414.9 (404.9). Minimum burial depth. Underground piping
systems shall be installed a minimum depth of 18 inches (458 mm) below
grade.
� _. Sec. G2414.9.1. Individual outside appliances is hereby deleted in its
entirety.
�<,.�
Sec. G2416.4. Test pressure measurement is amended by the addition of
a sentence at the end of the paragraph to read as follows:
Sec. G2416.4. Test pressure measurement. {Bu/k of section to remain
unchanged.} The equipment used shall be of an appropriate scale such
that pressure loss can be easily determined.
Sec. G2416.4.1. Test pressure is amended to read as follows:
Sec. G2416.4.1 (406.4.1). Test pressure. The test pressure to be used
shall be not less than 10 psig (68.9 kPa gauge), or at the discretion of the
Building Official, the piping and valves may be tested at a pressure of at
least six (6) inches (152 mm) of inercury, measured with a manometer or
slope gauge. For welded piping, and for piping carrying gas at pressures
in excess of 14 inches water column pressure (3.48 kPa), the test
pressure shall not be less than 60 pounds per square inch (413.4 kPa).
Sec. G2416.4.2. Test duration is amended to read as follows:
�� " Sec. G2416.4.2 (406.4.2). Test duration. Test duration shall be held for a
length of time satisfactory to the Building Official, but in no case for less
ORD. NO. 2001-93 16
than 15 minutes. For welded piping, and for piping carrying gas at
" pressures in excess of 14 inches water column pressure (3.48 kPa), the
test duration shall be held for a length of time satisfactory to the Building
��`'� Official, but in no case for less than 30 minutes.
Sec. G2419.1. Gas shutoff valves is amended by the addition of Section
G2419.1.4. to read as follows:
Sec. G2419.1.4. Valves in CSST installations. Shutoff valves installed
with corrugated stainless steel (CSST) piping systems shall be supported
with an approved termination fitting, or equivalent support, suitable for the
size of the valves, of adequate strength and quality, and located at
intervals so as to prevent or damp out excessive vibration but in no case
greater than 12-inches from the center of the valve. Supports shall be
installed so as not to interfere with the free expansion and contraction of
the system's piping, fittings, and valves between anchors. All valves and
supports shall be designed and installed so they will not be disengaged by
movement of the supporting piping.
Sec. G2420.1. Pressure regulators is amended by the addition of a
second paragraph and an exception to read as follows:
, .� Sec. G2420.1. Pressure regulators. {Bu/k of section to remain
unchanged.}
�,..�
Access to regulators shall comply with the requirements for access to
appliances as specified in Section M1305.
Exception: A passageway or level service space is not required when the
regulator is capable of being serviced and removed through the required
attic opening.
Sec. G2424.8. Equipment not required to be vented is amended to read
as follows:
Sec.2424.8 (501.8). Equipment not required to be vented. The following
appliances shall not be required to be vented:
1. Ranges.
2. Built-in domestic cooking units listed and marked for optional
venting.
�,:.;�
3. Hot plates and laundry stoves.
���
ORD. NO. 2001-93 17
4. Type 1 Clothes dryers (Type 1 clothes dryers shall be exhausted in
� accordance with the requirements of Section G2437).
�`� 5. Refrigerators.
6. Counter appliances
Where the appliances and equipment listed in Items 1 through 6 above
are installed so that the aggregate input rating exceeds 20 Btu per hour
per cubic foot (207 watts per m3) of volume of the room or space in which
such appliances and equipment are installed, one or more shall be
provided with venting systems or other approved means for conveying the
vent gases to the outdoor atmosphere so that the aggregate input rating of
the remaining unvented appliances and equipment does not exceed the
20 Btu per hour per cubic foot (207 watts per m3) figure. Where the room
or space in which the equipment is installed is directly connected to
another room or space by a doorway, archway or other opening of
comparable size that cannot be closed, the volume of such adjacent room
or space shall be permitted to be included in the calculations.
Sec. G2437.5. Clothes dryer ducts is amended by the addition of a
sentence at the end of the paragraph to read as follows:
��...�
Sec. G2437.5. Clothes dryer ducts. {Bulk of section to remain unchanged.}
�m�� The size of duct shall not be reduced along its developed length nor at the
point of termination.
Sec. G2437.5.1. Maximum length is amended to read as follows:
Sec. G2437.5.1 (613.6.1). 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 two and one-half (2 '/2) feet (762 mm) for each 45-degree (0.79
rad) bend and five (5) feet (1524 mm) for each 90-degree (1.6 rad) bend
that occur after the first two bends, measuring in the direction of airflow.
{Exception is unchanged}
Sec. G2443. Unvented room heaters is amended in its entirety to read as
follows:
Sec. G2443. Unvented room heaters. Unvented gas fired room heaters
,,�.�
and decorative appliances shall be prohibited by this code.
ORD. NO. 2001-93 18
Sec. G2446.1.1. Installation requirements is amended to read as follows:
Sec. G2446.1.1 (623.1.1). Installation requirements. The requirements for
4' ' water heaters relative to access, sizing, relief valves, drain pans and scald
protection shall be in accordance with this code.
Sec. P2503.5.1. Rough plumbing, Item 1; is amended by the addition of a
sentence at the end of subsection one to read as follows:
Sec. P2503.5.1. Rough plumbing, {Bulk of section to remain unchanged.}
1. {Bu/k of Item 1 to remain unchanged.} Shower receptors shall be
tested for water tightness by filling with water to the level of the
rough threshold. The drain shall be plugged in a manner so that
both sides of pans shall be subjected to the test at the point where
it is clamped to the drain.
Sec. P2503.7.2. Testing is amended to read as follows:
Sec.P2503.7.2. Testing. Reduced pressure principle...{bu/k of section
unchanged}...at the time of installation, immediately after repairs or
relocation and at regular intervals as required by applicable state or local
� provisions.
�,,,� Sec. P2603.6. Freezing is amended to read as follows:
Sec. P2603.6. Freezing. Water heaters, water, soil or waste pipe shall not
be installed outside of a building, in exterior walls, in attics or crawl
spaces, or in any other place subjected to freezing temperature unless
adequate provision is made to protect it from freezing by insulation or heat
or both. Water service pipe shall be installed not less than 12 inches (305
mm) deep or less than six (6) inches (152 mm) below the front line.
Building sewers shall be a minimum of 12 inches below grade.
Sec. P2708.1. Genera/is amended to read as follows:
Sec. P2708.1. General. Shower compartments shall have at least 900
square inches (0.581 m2) of floor area and be of sufficient size to inscribe
a circle with a diameter not less than 30 inches (762 mm). Hinged shower
doors shall open outward. The wall area above built-in tubs having
installed shower heads and in shower compartments shall be constructed
as per Section 307.2. Such walls shall form a water-tight joint with each
other and with either the tub, receptor or shower floor. Thresholds shall
�:;.<.�
be of sufficient width to accommodate a minimum 22 inch (559 mm) door.
{Exception is unchanged}
�
ORD. NO. 2001-93 19
� Sec. P2709.1. Construction is amended by the addition of an exception to
:�..,,�
read as follows:
Sec. P2709.1. Construction. {Bulk of section to remain unchanged.}
Exception: Showers designed to comply with ICC/ANSI A117.1.
Sec. P2710.1. Finished is amended to read as follows:
Sec. P2710.1. Finished. Shower walls shall be finished in accordance
with Section R307.2.
Sec. P2801.7. Water heaters above ground or floor is amended by the
addition of Sections P2801.7 and P2801.7.1 to read as follows:
Sec. P2801.7. Water heaters above ground or floor. When the mezzanine
or platform in which a water heater is installed is more than eight (8) feet
(2438mm) above the ground or floor level, it shall be made accessible by
a stairway or permanent ladder fastened to the building.
Sec. P2801.7.1. Whenever the mezzanine or platform is not adequately
}� i3 lighted or access to a receptacle outlet is not obtainable from the main
level, lighting and a receptacle outlet shall be provided in accordance with
�, ;� Section M1305.1.3.1.
Sec. P2803.6.1. Requirements for discharge is amended to read as
follows:
Sec. P2803.6.1. Requirements for discharge. The outlet of a pressure
relief valve, temperature relief valve or combination thereof, shall not be
directly connected to the drainage system. The discharge from the relief
valve shall be piped full size separately to the outside of the building or to
an indirect waste receptor located inside the building.
In areas subject to freezing, the relief valve shall discharge through an air
gap into an indirect waste receptor located within a heated space, or by
other approved means. The discharge pipe shall not discharge into the
pan required in Section P2801.5.
The discharge shall be installed in a manner that does not cause personal
injury or property damage and that is readily observable by the building
occupants. The discharge from a relief valve shall be trapped. The
diameter of the discharge piping shall not be less that the diameter of the
` �' relief valve outlet.
�
ORD. NO. 2001-93 20
The discharge pipe shall be instailed so as to drain by gravity flow and
" shall terminate atmospherically. When discharging outside the building,
the point of discharge shall be with the end of the pipe not more than two
° � (2) feet (610 mm) nor less than six (6) inches (152 mm) above the ground
or the floor level of the area receiving the discharge and pointing
downward.
The end of the discharge pipe shall not be threaded.
Table P2904.4.1. Water service installation is amended by the deletion of
all references to "Polybutylene (PB) plastic pipe and tubing".
Sec. P2904.5. Water-distribution pipe is hereby amended by deleting the
reference to "PB" plastic pipe.
Sec. P2904.5.1. Under concrete s/abs is hereby amended to read as
follows:
Sec. P2904.5.1. Under concrete slabs. Inaccessible water distribution
piping under slabs shall be copper water tube minimum Type M, brass,
ductile iron pressure pipe tube or galvanized steel pipe.
��..:� Sec. P2904.12. Underground joints is hereby amended to read as follows:
��,,w, Sec. P2904.12. Underground joints. Joints in copper pipe or tube installed
in a concrete floor slab or under a concrete floor slab on grade shall be
installed using wrought-copper fittings and brazed joints.
Sec. P3005.2.6. Upper terminal is amended to read as follows:
Sec. P3005.2.6. Upper terminal. Each horizontal drain shall be provided
with a cleanout at its upper terminal.
Exception: Cleanouts may be omitted on a horizontal drain less than five
(5) feet (1524 mm) in length unless such line is serving sinks or urinals.
Sec. P3103.1. Roof extension is amended to read as follows:
Sec. P3103.1. Roof extension. All open vent pipes which extend through
a roof shall be terminated at least six (6) inches (152 mm) above the roof
except that ....{remainder of section unchanged}.
Sec. P3105.2. Fixture drains is hereby deleted in its entirety.
�'°"� Sec. P3105.3. Vertical leg for waste fixture drains is hereby deleted in its
entirety.
�:��
ORD. NO. 2001-93 21
� �` Sec. P3105.3. (Figure 3105.3) is hereby deleted in its entirety.
� Sec. P3111.1. Type of fixture is amended to read as follows:
Sec. P3111.1. Type of fixture. A combination waste and vent system shall
not serve fixtures other than floor drains, standpipes, and indirect waste
receptors. Combination drain and vent systems shall not receive the
discharge of a food waste grinder.
Sec. P3111.2. Installation is amended to read as follows:
Sec. P3111.2. Installation. The only vertical pipe of a combination drain
and vent system shall be the connection between the fixture drain of a
standpipe, and the horizontal combination waste and vent pipe. The
maximum vertical distance shall be eight (8) feet (2438 mm).
Chapter 33 General Requirements is hereby amended to read as follows:
Chapter 33 General Requirements. The electrical portions of this code
are included for reference only. All electrical work shall comply with the
electrical code adopted by the City.
w,v ;:.
Chapters 34 - 42 Electrical Provisions are hereby deleted in their entirety:
�.<:�
Appendix Chapters — The following Appendix Chapter from the 2000
International Residential Code is hereby incorporated as if set out at
length herein:
Appendix Chapter H, Patio Covers, is hereby adopted in its entirety."
Section 4. Any person violating any of the provisions of this ordinance shall be
deemed guilty of a misdemeanor and upon conviction thereof shall be fined in a sum not
to exceed Two Thousand Dollars ($2,000.00) for each offense and a separate offense
shall be deemed committed each day during or on which an offense occurs or
continues.
Section 5. All ordinances or any parts thereof in conflict with the terms of this
ordinance shall be and hereby are deemed repealed and of no force or effect.
Section 6. If any section, subsection, sentence, clause or phase of this
ordinance shall for any reason be held to be invalid, such decision shall not affect the
validity of the remaining portions of this ordinance.
.,�,.:�
��
ORD. NO. 2001-93 22
Section 7. The fact that the present ordinances and regulations of the City of
Grapevine, Texas are inadequate to properly safeguard the health, safety, morals,
peace and general welfare of the inhabitants of the City of Grapevine, Texas, creates an
� emergency for the immediate preservation of the public business, property, health,
safety and general welfare of the public which requires that this ordinance shall become
effective from and after the date of its passage, and it is accordingly so ordained.
Section 8. That this ordinance shall become effective on January 1, 2002.
PASSED AND APPROVED BY THE CITY COUNCIL OF THE CITY OF
GRAPEVINE, TEXAS, on this the 4th day of December, 2001.
APPROVED:
Xv °� � - :
William D. Tate
Mayor
ATTEST:
��,..,� --
Lin a Huff
City �ecretary
APPROVED AS TO FORM:
��..., �.�..,,.s
John F. Boyle, Jr
City Attorney
���
ORD. NO. 2001-93 23
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CITY OF GRAPEVINE EXHIBIT "A"
MECHANICAL, ELECTRICAL AND PLUMBING
PERMIT FEES
TYPE OF OCCUPANCY BUILDING AREA PERMIT FEES AMOUNT DUE
� (SQ FT)
EACH TRADE
I. R-3 1 - 749 $ 33.25
SINGLE FAMILY, DUP�EX 750- 1,199 $ 49.88
TOWNHOUSE, 1,200- 1,500 $ 63.18
NEW CONSTRUCTION& 1,501 - 1,750 $ 76.48
ADDITIONS(PER UNIT) 1,751 - 2,000 $ 83.13
2,001 - 2,250 $ 89.78
TOTAL SQ.FOOT UNDER 2,251 - 3,000 $ 96.43
ROOF � 3,001 - 3,500 $ 103.08
- 3,501 - 4,000 $ 109.73 $
4,001 + $ 120.37
CONTRACT EACH TRADE
VALUATION OF
WORK
11. R-3 ALTERATIONS 0- 500 $ 37.00
501- 1,500 $ 45.00
1,501- 3,000 $ 57.00
CONTRACT VALUATION OF WORK: 3,001- 5,000 $ 72.00
5,001- 50,000 $ 27.00+.009
50,001-100,000 $ 127.00+.007 PER
$ 100,001-500,000 $ 327.00+.005 DOLLAR
500,000+ $ 1,327.00+.003 VALUATION $
EACH TRADE
,;w ,,�i III. IRRIGATION SYSTEMS $ 37.00
MOBILE HOME SERVICE $ 37.00
TEMPORARY POLE SERVICE $ 37.00
SWIMMING POOLS $ 37.00
SIGN ELECTRIC $ 37.00 $
OTHER INSPECTIONS AND FEES
• INSPECTIONS OUTSIDE NORMAL BUSINESS HOURS(2HR MINIMUM)...............................................$42.00/HOUR*
. REINSPECTION FEES.................................................................................................................. $42.00
• PERMITS FOR WHICH NO FEE IS SPECIFICALLY INDICATED........................................................... $37.00
• INSPECTIONS FOR WHICH NO FEE IS SPECIFICALLY INDICATED(1/2 HOUR MINIMUM)......................$42.00/HOUR
• ADDITIONAL PI.AN REVIEW REQUIRED BY CHANGES,ADDITIONS,OR REVISIONS TO
APPROVEDPLANS.......................................................................................................................$42.00/HOUR
. BUILDING PERMIT FEES FOR THE GRAPEVINE-COLLEYVILLE INDEPENDENT SCHOOL DISTRICT
SHALL BE 25%OF THE FEES ESTABLISHED IN THIS TABLE
• FOR USE OF OUTSIDE CONSULTANTS FOR PLAN CHECKING AND INSPECTIONS,OR BOTH.........ACTUAL COSTS'*
`OR THE TOTAL HOURLY COST TO THE JURISDICTION WHICHEVER IS GREATER.
"ACTUAL COSTS INCLUDE ADMINISTRATIVE AND OVERHEAD COSTS.
O:\FORM\M EPN EWPERM IT3
062101
EXHIBIT� TO � - -�
Page ._s�.. of ..r�3_.
-�:��..,�
�,�
EXHIBIT� TO EXHIBIT "B"
Page �...rL._ of .�L.._._
� �° `*Table R301.2(1); fill in as follows:
Roof Wind Seismic
Snow Design
Load S eede m h Categoryr�9
5 Ib/ft 90 (3-sec-gust)/75 fastest mile A
Subject to damage from Winter
Frost line Design Flood
Weatherin a de th° Termite` Deca ° Temp` Hazards''
slight to local
mode�ate 6" ve heav moderate 22° F code
��,:�
;.,�;;:�,
��
EXHIBIT "C"
EXHIBIT� TO "
Page ._.L_.. ot __L__.
`*Rep/ace Table N1102.1 with:
TABLE N1102.1
SIMPLIFIED PRESCRIPTIVE BUILDING ENVELOPE THERMA�COMPONENT CRITERIA
MINIMUM REQUIRED THERMAL PERFORMANCE U-FACTOR AND R-VALUE
MINIMUM INSULATION R-VALUE hr•ft •'F /Btu
MAXIMUM Ceilings Ceiling
GLAZING open to Joist/Roof Walls Floors Basement Slab Crawl
U-FACTOR Attic Rafter Walls perimeter space
Btu/ hr•ft2•'F ] S ace Assembl walls
0.65 R-38 R-22 R-13 R-19 R-0 R-0 R-0
(Reason:This amendment is compatible with the previous amendments increasing the number of
builders who could use the"simplified prescriptive"approach of the IRC and incorporates the Home
Builder Association prescriptive package proposal. The addition of"Ceiling JoisURoof Rafter Assembly"
requirements protect such assemblies from the damage likely to occur if greater amounts of insulation
were attempted in such assemblies.)
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'"Add Table M1601.3.4 to read as follows: EXHIBIT "�"
Table M1601.3.4-Insulation of Ducts
Insulation Types Insulation `�
Duct Location Mechanically Heating Zone � Types �
�>_ry.:�
Cooled Heating Only �
I A and W
On roof on exterior of building C, VZ and W II B and W 0
III C and W
I A
Attics, garages and crawl spaces A and Vz II A 0
III B 1—
m
I A a
�
in walls3, within floor-ceiling spaces3 A and VZ II A �-
III B �_
m
Within the conditioned space or in None required None required T
basements; return ducts in air plenums X
W
Cement slab or within ground None required None required
Note: Wfiere 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.
�:� z 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 2 Yz percent column of dry-bulb and mean
coincident wet-bulb temperature exceeds 60° F. (15.4°C).
�"�'* 3lnsulation may be omitted on that portion of a duct which is located within a wall-or a floor-ceiling space
where:
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.
��4 The space is not exposed to unconditioned air.
Ceilings which form plenums need not be insulated.
INSULATION TYPES° :
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)NVJ.
Example of materials capable of ineetin�q the above requirements:
1-inch(25 mm), 0.60 Ib./cu.ft. (9.6 kg/m )mineral fiber, rock, slag or glass blankets.
Yrinch (13 mm), 1.5 to 3 Ib./cu.ft. (24 to 48 kg/m3)mineral fiber blanket duct liner.
'/rinch (13 mm), 3 to 10 Ib./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 capabfe of ineetin�q the above requirements:
2-inch (51 mm), 0.60 Ib./cu.ft. (9.6 kg/m )mineral fiber blankets.
1-inch (25 mm), 1.5 to 3 Ib./cu.ft. (24 to 48 kg/m3)mineral fiber blanket duct liner.
1-inch (25 mm), 3 to 10 fb./cu.ft. (48 to 160 kg/m3)mineral fiber board.
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)NV].
Example of materials capable of ineetin�q the above requirements:
3-inch (76 mm), 0.60 Ib./cu.ft. (9.6 kg/m )mineral fiber blankets.
���"� 1 Yz-inch (38 mm), 1.5 to 3 Ib./cu.ft. (24 to 48 kg/m3)mineral fiber blanket duct liner.
1 Y�-inch (38 mm), 3 to 10 Ib./cu.ft. (48 to 160 kg/m3)mineral fiber board.
V--Vapor Retarders: Material with a perm rating not exceeding 0.05 perm [29 ng/Pa`s'mzJ. 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.
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