PART 3 - EXECUTION
3.01
INSTALLATION:
Except as modified herein, installation of the PVC pipe shall be in accordance with
ASTM D2321.
Each pipe length shall be inspected before being laid to verify that tt is not cracked. Pipe shall
be laid to conform to the lines and grades indicated on the drawings or given by the Engineer.
Each pipe shall be so laid as to form a close joint with the next adjoining pipe and bring
the inverts continuously to the required grade.
The pipe shall be supported by compacted crushed stone. Crushed stone shall be as
specified under Section 02300, EARTHWORK.
The pipe shall not be driven down to grade by striking tt with a shovel handle, timber, rammer,
or other unyielding object. When each pipe has been properly bedded, enough of the
backfill material shall be placed and compacted between the pipe and the sides of the trench
to hold the pipe in correct alignment.
Before a joint 1s made, the pipe shall be checked to assure that a close joint with the
next adjoining pipe has been maintained and that inverts are matched and conform to the
required line and grade.
For pipe placed on crushed stone, immediately after the joint 1s made, the jointing area shall
be filled with suitable materials so placed and compacted that the ends of either pipe will not
settle under backfill load.
No pipe or fitting shall be permanently supported on saddles, blocking, or stones.
Branches and fittings shall be laid by the Contractor as indicated on the drawings, and/or
as directed by the Engineer. Open ends of pipe and branches shall be closed with PVC caps
secured in place with pre-molded gasket joints or as directed by the Engineer.
All pipe joints shall be made as nearly watertight as practicable. There shall be no
visible leakage at the joints and there shall be no sand, silt, clay, or soil of any description
entering the pipeline at the joints. Where there is evidence of water or soil entering the
pipeline, connecting pipes, or structures, the defects shall be repaired to the satisfaction of
the Engineer.
The Contractor shall build a tight bulkhead in the pipeline where new work enters an
existing sewer. This bulkhead shall remain in place until its removal is authorized by the
Engineer.
Care shall be taken to prevent earth, water, and other materials from entering the pipe, and
when pipe laying operations are suspended, the Contractor shall maintain a suitable stopper
in the end of the pipe and also at openings for manholes.
02085-3
