Page 603 - 2018_IRC

FUEL GAS

SECTION G2415 (404) member and not less than 4 inches (102 mm) below the top
PIPING SYSTEM INSTALLATION framing member.
G2415.1 (404.1) Installation of materials. Materials used G2415.7.2 (404.7.2) Piping installed in other locations.
shall be installed in strict accordance with the standards under Where the piping is located within a framing member and
which the materials are accepted and approved. In the is less than 1 / inches (38 mm) from the framing member
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absence of such installation procedures, the manufacturer’s face to which wall, ceiling or floor membranes will be
instructions shall be followed. Where the requirements of ref- attached, the piping shall be protected by shield plates that
erenced standards or manufacturer’s instructions do not con- cover the width and length of the piping. Where the piping
form to minimum provisions of this code, the provisions of is located outside of a framing member and is located less
this code shall apply. than 1 / inches (38 mm) from the nearest edge of the face
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G2415.2 (404.2) CSST. CSST piping systems shall be of the framing member to which the membrane will be
installed in accordance with the terms of their approval, the attached, the piping shall be protected by shield plates that
conditions of listing, the manufacturer’s instructions and this cover the width and length of the piping.
code. 2415.7.3 (404.7.3) Shield plates. Shield plates shall be of
G2415.3 (404.3) Prohibited locations. Piping shall not be steel material having a thickness of not less than 0.0575
installed in or through a ducted supply, return or exhaust, or a inch (1.463 mm) (No. 16 gage).
clothes chute, chimney or gas vent, dumbwaiter or elevator G2415.8 (404.8) Piping in solid floors. Piping in solid floors
shaft. Piping installed downstream of the point of delivery shall be laid in channels in the floor and covered in a manner
shall not extend through any townhouse unit other than the that will allow access to the piping with a minimum amount
unit served by such piping.
of damage to the building. Where such piping is subject to
G2415.4 (404.4) Piping in solid partitions and walls. Con- exposure to excessive moisture or corrosive substances, the
cealed piping shall not be located in solid partitions and solid piping shall be protected in an approved manner. As an alter-
walls, unless installed in a chase or casing. native to installation in channels, the piping shall be installed
in a conduit of Schedule 40 steel, wrought iron, PVC or ABS
G2415.5 (404.5) Fittings in concealed locations. Fittings
installed in concealed locations shall be limited to the follow- pipe in accordance with Section G2415.8.1 or G2415.8.2.
ing types: G2415.8.1 (404.8.1) Conduit with one end terminating
1. Threaded elbows, tees and couplings. outdoors. The conduit shall extend into an occupiable por-
tion of the building and, at the point where the conduit ter-
2. Brazed fittings. minates in the building, the space between the conduit and
3. Welded fittings. the gas piping shall be sealed to prevent the possible entrance
of any gas leakage. The conduit shall extend not less than 2
4. Fittings listed to ANSI LC1/CSA 6.26 or ANSI LC4/ inches (51 mm) beyond the point where the pipe emerges
CSA 6.32. from the floor. If the end sealing is capable of withstanding
G2415.6 (404.6) Underground penetrations prohibited. the full pressure of the gas pipe, the conduit shall be designed
Gas piping shall not penetrate building foundation walls at for the same pressure as the pipe. Such conduit shall extend
any point below grade. Gas piping shall enter and exit a not less than 4 inches (102 mm) outside the building, shall be
building at a point above grade and the annular space vented above grade to the outdoors and shall be installed so
between the pipe and the wall shall be sealed. as to prevent the entrance of water and insects.
G2415.7 (404.7) Protection against physical damage. G2415.8.2 (404.8.2) Conduit with both ends terminating
Where piping will be concealed within light-frame construc- indoors. Where the conduit originates and terminates
tion assemblies, the piping shall be protected against penetra- within the same building, the conduit shall originate and
tion by fasteners in accordance with Sections G2415.7.1 terminate in an accessible portion of the building and shall
through G2415.7.3. not be sealed. The conduit shall extend not less than 2
inches (51 mm) beyond the point where the pipe emerges
Exception: Black steel piping and galvanized steel piping
shall not be required to be protected. from the floor.
G2415.7.1 (404.7.1) Piping through bored holes or G2415.9 (404.9) Above-ground piping outdoors. Piping
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notches. Where piping is installed through holes or notches installed outdoors shall be elevated not less than 3 / inches (89
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in framing members and the piping is located less than 1 / 2 mm) above ground and where installed across roof surfaces,
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inches (38 mm) from the framing member face to which shall be elevated not less than 3 / inches (89 mm) above the
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wall, ceiling or floor membranes will be attached, the pipe roof surface. Piping installed above ground, outdoors, and
shall be protected by shield plates that cover the width of installed across the surface of roofs shall be securely supported
the pipe and the framing member and that extend not less and located where it will be protected from physical damage.
than 4 inches (102 mm) to each side of the framing member. Where passing through an outside wall, the piping shall be pro-
Where the framing member that the piping passes through tected against corrosion by coating or wrapping with an inert
is a bottom plate, bottom track, top plate or top track, the material. Where piping is encased in a protective pipe sleeve,
shield plates shall cover the framing member and extend the annular space between the piping and the sleeve shall be
not less than 4 inches (102 mm) above the bottom framing sealed.
578 2018 INTERNATIONAL RESIDENTIAL CODE ®
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