building walls. Anchor the joints in accordance with NFPA 24 using pipe
clamps and steel rods. Minimum pipe size shall be 150 mm 6 inches.
Minimum depth of cover shall be [_____] [one meter] [3 feet]. Piping more
than 1 1/2 meters 5 feet outside the building walls shall be [outside
coated cement lined ductile iron pipe and fittings conforming to NFPA 24]
[provided under Section 02510 WATER DISTRIBUTION].
2.21.2
Valves
**************************************************************************
NOTE: If Section 02510, "Water Distribution" is
included as part of the project specification,
requirements for buried gate valves, post indicator
valves, and valve boxes may be deleted here and
specified in Section 02510. Careful coordination is
required to insure that materials rated for fire
service are specified.
**************************************************************************
Provide as required by NFPA 24 for fire service. Gate valves shall conform
to AWWA C500 or UL 262 with cast iron body and bronze trim, and shall open
by counterclockwise rotation.
2.21.3
Post Indicator Valves
**************************************************************************
NOTE: If Section 02510, "Water Distribution" is
included as part of the project specification,
requirements for buried gate valves, post indicator
valves, and valve boxes may be deleted here and
specified in Section 02510. Careful coordination is
required to insure that materials rated for fire
service are specified.
**************************************************************************
Provide with operating nut located about one meter 3 feet above grade.
Gate valves for use with indicator post shall conform to UL 262. Indicator
posts shall conform to UL 789. Paint each indicator post with one coat of
primer and two coats of red enamel paint.
2.21.4
Valve Boxes
**************************************************************************
NOTE: If Section 02510, "Water Distribution" is
included as part of the project specification,
requirements for buried gate valves, post indicator
valves, and valve boxes may be deleted here and
specified in Section 02510. Careful coordination is
required to insure that materials rated for fire
service are specified.
**************************************************************************
Except where indicator posts are provided, provide each gate valve in
buried piping with an adjustable cast-iron valve box of a size suitable for
the valve on which it is to be used. Boxes outside of paved areas may be
of Acrylonitrile-Butadiene- Styrene (ABS) plastic or of inorganic fiber
reinforced black polyolefin plastic. The head shall be round and the lid
shall have the word WATER cast on it. The least diameter of the shaft of
the box shall be 133 mm 5 1/4 inches. Coat each cast-iron box with
SECTION 13958N
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