Chapel Lane Sewer Extension

Birmingham, Alabama
Environmental Services
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.