required to insure that materials rated for fire
service are specified.
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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.
2.20.4
Valve Boxes
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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.
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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
bituminous paint.
2.20.5
Buried Utility Warning and Identification Tape
Provide detectable aluminum foil plastic-backed tape or detectable magnetic
plastic tape manufactured specifically for warning and identification of
buried piping. Tape shall be detectable by an electronic detection
instrument. Provide tape in rolls, 80 mm 3 inches minimum width, color
coded for the utility involved, with warning and identification imprinted
in bold black letters continuously and repeatedly over entire tape length.
Warning and identification shall be CAUTION BURIED WATER PIPING BELOW or
similar. Use permanent code and letter coloring unaffected by moisture and
other substances contained in trench backfill material. Bury tape with the
printed side up at a depth of 305 mm 12 inches below the top surface of
earth or the top surface of the subgrade under pavements.
PART 3
EXECUTION
3.1
EXCAVATION, BACKFILLING, AND COMPACTING
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NOTE: Sectect and edit Section 02302, "Excavation,
Backfilling, and Compacting for Utilities" and
include as part of the project specification.
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Provide under this section as specified in Section 02300 EARTHWORK.
3.2
CONNECTIONS TO EXISTING WATER SUPPLY SYSTEMS
Use tapping or drilling machine valve and mechanical joint type sleeves for
SECTION 13957N
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