required.
**************************************************************************
Gaskets shall be as specified in [the referenced specification for the
pipe] [ASTM C 361M ASTM C 361] and shall be suitable for use with sewage.
2.1.5
Ductile Iron Gravity Sewer Pipe and Associated Fittings
2.1.5.1
Ductile Iron Gravity Pipe and Fittings
**************************************************************************
NOTE: ASTM A 746 also contains design information
and methods by which the required Thickness Class of
Pipe can be determined when depth of trench is known.
Delete requirements for and references to push-on
joints for ductile-iron gravity sewer pipe and
associated fittings when the greater deflection
afforded by the mechanical joint is considered
necessary throughout.
**************************************************************************
Ductile iron pipe shall conform to ASTM A 746, Thickness Class [_____].
Fittings shall conform to AWWA C110 or AWWA C153. [Fittings with push-on
joint ends shall conform to the same requirements as fittings with
mechanical-joint ends, [except that the bell design shall be modified, as
approved by the Contracting Officer, for push-on joint].] Fittings shall
have strength at least equivalent to that of the pipe. Ends of pipe and
fittings shall be suitable for the joints specified hereinafter. Pipe and
fittings shall have cement-mortar lining conforming to AWWA C104, standard
thickness.
2.1.5.2
Ductile Iron Gravity Joints and Jointing Materials
**************************************************************************
NOTE: Delete requirements for and references to
push-on joints for ductile-iron gravity sewer pipe
and associated fittings when the greater deflection
afforded by the mechanical joint is considered
necessary throughout.
**************************************************************************
Pipe and fittings shall have [push-on joints] [or] [mechanical joints],
except as otherwise specified in this paragraph. [Mechanical joints only
shall be used where indicated.] [Push-on joint pipe ends and fitting ends,
gaskets, and lubricant for joint assembly shall conform to AWWA C111.]
[Mechanical joint requirements for pipe ends, glands, bolts and nuts, and
gaskets shall conform to AWWA C111.]
2.1.6
Ductile Iron Pressure Piping
**************************************************************************
NOTE: Ductile iron pipe is used for sizes 75 mm (3
inches) to 1600 mm (64 inches).
**************************************************************************
2.1.6.1
Ductile Iron Pressure Pipe and Fittings
**************************************************************************
SECTION 02531
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