Deep Pull Saves Janesville, Wis., Time, Money

摘要

East Conde Street is the only industrial park access to two businesses in Janesville, Wis., where they experience steady schedules of truck traffic throughout the day. Shutting down East Conde Street to replace a 660-ft section of 12-in. sewer lying 19 ft beneath it would be a tremendous financial burden on these companies. A camera report showed that nearly a quarter of the sewer pipe's bottom portion had disintegrated. Replacement to prevent any more collapses became an urgent priority, and pipe bursting was the recommended replacement technique. The job was awarded to Speedway Sand & Gravel of Middleton,Wis., which would perform a 12on-12-in. pull of fused HDPE pipe in a single pipe bursting run. Speedway selected a 15.75-in. concrete expander to run behind a pilot pulled by a 125-ton static bursting machine for this job.