3.1.3.1
Provide [plug cock] [or] [ball valve] ahead of regulator. [Install
regulator outside of building and 450 mm 18 inches aboveground on riser.]
[Install regulator inside building and extend a full-size vent line from
relief outlet on regulator to a point outside of building.] [Install gas
meter in conjunction with pressure regulator]. On outlet side of
[regulator] [meter], provide a union and a 10 mm 3/8 inch gage tap with
plug.
3.1.3.2
Stop Valve and Shutoff Valve
Provide stop valve on service branch at connection to main and shut-off
valve on riser outside of building.
3.1.4
Pipe Sleeves
[Comply with Section 07840 FIRESTOPPING.] Where piping penetrates concrete
or masonry wall, floor or firewall, provide pipe sleeve poured or grouted
in place. Make sleeve of steel or cast-iron pipe of such size to provide 6
mm 1/4 inch or more annular clearance around pipe. Extend sleeve through
wall or slab and terminate flush with both surfaces. Pack annular space
with oakum, and caulk at ends with silicone construction sealant.
3.1.5
Piping Hangers and Supports
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NOTE: In seismic zone 3 or 4, provide seismic
restraints in accordance with SMACNA Seismic
Restraint Mnl.
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Selection, fabrication, and installation of piping hangers and supports
shall conform with MSS SP-69 and MSS SP-89, unless otherwise indicated.
[Provide seismic restraints in accordance with SMACNA Seismic Restraint Mnl.]
3.1.6
Final Connections
Make final connections to equipment and appliances using rigid pipe and
fittings, except for the following:
3.1.6.1
Domestic Water Heaters
Connect with AGA-Approved semi-rigid tubing and fittings.
3.1.6.2
Kitchen Equipment
Install AGA-Approved gas equipment connectors. Connectors shall be long
enough [to permit movement of equipment for cleaning] [and] [to afford
access to coupling].
3.2
FIELD QUALITY CONTROL
3.2.1
Metal Welding Inspection
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NOTE: To assist the designer in selecting the
proper documents for a specific project, the
following scope in accordance with documents is
SECTION 15195N
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