Each pipe section shall be handled into its
position in the trench only in such manner and by such means as the
Township approves as satisfactory. The contractor shall furnish slings,
straps and other approved devices to permit satisfactory support of
all parts of the pipe when it is lifted.
The Township shall be notified when the pipes
are to be laid in the trench, and none shall be covered until they
have been inspected and approved by the Township. At least 25 feet
of pipe shall, under ordinary circumstances, be laid before covering
begins.
Gravity sewer lines shall be constructed with
slopes of at least the minimum allowable set forth in N.J.A.C. 7:14A-23.6.
Upon completion of pipeline laying from manhole to manhole, the grade
of pipe shall be checked for proper slope before proceeding to the
next manhole. Failure to verify and correct deviations from established
grade may require removal and replacement of several strings of pipe
to correct less than minimum grade conditions detected at time of
final inspection.
Embedment bedding for use with various pipe types, sizes and depths shall be as required under §
201-137, Pipe embedment and encasement, of these specifications.
Where special junction chambers are to be constructed
or where existing sewers carrying sanitary sewage are encountered,
the contractor shall provide and maintain temporary connections to
prevent a nuisance.
The contractor shall furnish and install a detectable
identifying tape in all trenches where nonmetallic pipe is used. The
identifying tape shall be made of polyethylene tape, bonded to a metalized
foil, and shall be highly resistant to alkaloids, acids or other destructive
chemical components likely to be encountered in soils. The tape shall
be three inches wide, shall be brightly colored to contrast with soil
and bear an imprint identifying the type of line buried below. The
tape shall be placed approximately 18 inches below the finished grade
and turned up at the capped end of house service laterals with 12
inches of the tape extending above the surface to act as flagging
for visually locating the lateral.