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Relining/Rehab + Get AlertsPipe bursting system ends blockages
Problem
Roots protruding through joints and cracks in a 110-foot section of 4-inch vitrified clay sewer pipe created blockages at a mobile home park in Sunnyvale, Calif. The park owners looked for a permanent fix.
Solution
Maintenance supervisor Bob Smith contracted RODDIE Inc. to replace the line with 4-inch SDR-17 HDPE pipe using the company’s PB-40 pipe bursting system. The compact, 120-pound machine fit easily in the small pulling pit sandwiched between structures. A 13 hp low-pressure hydraulic power pack powered the ram with 50 tons of pulling force and 21 square inches of piston area.
Result
Sewer service was restored in one day. 408/224-7777; www.pipeburstingamerica.com.
Pipe bursting helps cure I&I
Problem
Inflow and infiltration increased winter flow rates by five times the dry-weather rate at the Ross Valley Sanitary District in San Rafael, Calif. The district assembled a pipe bursting division as part of its trenchless repair campaign to replace more than 16 miles of aging sewer lines and adjoining lower laterals.
Solution
The district chose the compact M50 pipe bursting system from TRIC Tools to replace 6-inch vitrified clay mains with 8-inch high-density polyethylene pipe. A 14 gpm/5,000 psi trailer-mounted TRIC/WIT pump powered the ram with 48 tons of pulling force and 19.24 square inches of piston area. The equipment fit easily in easements and other tight places.
Result
The district estimated savings of 50 percent over open-cut replacement and a 40 percent reduction over subcontracting the work. 888/883-8742; www.trictools.com.