J. 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.
K. 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.
L. _ Assoonas possible after the pipe and manholes are completed on any street, the Contractor shall
flush out the new pipeline using a rubber ball ahead of the water, and none of the flushing water
or debris shall be permitted to enter any existing sewer.
3.02 QUALITY ASSURANCE
A. CLEANING, INSPECTION, AND TESTING:
1.
On completion of a section of sewer, the Contractor shall TV inspect the main section in
accordance with Section 02441, Cleaning, Television Inspection, and Testing of New
Pipelines at no additional cost to the Owner.
The Contractor shall be responsible for the satisfactory water-tightness of the entire
section of the sewer. Should the Engineer determine that the sections inspected are not
satisfactory, the Contractor shall be required to excavate and replace the entire section, at
no additional cost to the Owner.
B. PIPE DEFLECTION MEASUREMENT:
1.
2.
In accordance with ASTM D3034, no less than 30 days after completion of the PVC sewer
pipe installation, the Contractor shall test the pipeline for deflection using a "go/no-go"
deflection mandrel having a minimum of nine evenly spaced arms or prongs. The
"go/no-go" gauge shall be hand pulled through all sections of the pipeline by the
Contractor. The Contractor shall submit drawings of the "go/no-go" gauge to the Engineer
for approval prior to testing. Complete dimensions of the gauge for each diameter of pipe
to be tested shall be in accordance with ASTM D3034.
Any section of pipe found to exceed 7.5 percent deflection shall be deemed a failed pipe
and shall be excavated and replaced by the Contractor at his own expense.
END OF SECTION
2019 CIPPLining Project Polyvinyl Chloride Gravity Pipe and Fittings
Nashua, NH
02085-4
