West Ashley Sewer Tunnel and Influent Pump Station

West Ashley Sewer Tunnel and Influent Pump Station

Charleston, South Carolina

One of our clients had to install a force main at a depth of 12 feet on a pile cap, supported by piles, around the south side of Plum Island in the Ashley River Basin in Charleston, South Carolina. Stiver Engineering was retained for construction consulting to design a shoring system for the installation of the force main to provide the contractor access to the site during low tide conditions. The shoring was designed with sheet piles, wales, and cross struts, enabling the contractor to drive an excavator and front-end loader on the wale set for access to the excavation and installation of the force main. The force main now connects the new lift station to the existing Plum Island wastewater treatment facility.

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