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Chapel Lane Sewer Extension

Location: Birmingham, Alabama
Owner: Environmental Services
Completed: December 2011

This project entailed the installation of two tunnel drives.  The project ground conditions were difficult due to having a launch shaft in soft ground and then tunneling through rocky fill and then transitioning into a full face of hard rock.

This project entailed 750 lineal feet of 60” steel Permalok Casing installed via microtunnel. This was a two pass tunnel with pipe installed in the casing on spacers and grouted in place.