SC Water And Sewer Lines Practice Questions - South Carolina Water And Sewer Lines Contractor Examination Exam

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When polyethylene encasement is installed in a wet trench, what extra step does DIPRA’s alternate Modified Method A require along the barrel?

No tape is used because tape will not stick Circumferential wraps of tape every 2 feet (marine-grade tape if ordinary tape will not adhere) so the film cannot sag at the bottom Cut slits in the invert of the tube so water can drain Wait to install the tube until after the pipe is on the trench bottom

Correct Answer:

Circumferential wraps of tape every 2 feet (marine-grade tape if ordinary tape will not adhere) so the film cannot sag at the bottom

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