Cooper River Sewer Tunnel Replacement Project Daniel Island Extension Tunnel Project
Description
Contractor
Affholder, Inc.
owner
Commissioner of Public Works
Location:
Charleston, South Carolina
Project description
pproximately 12,900 cubic yards (Cooper River) and approximately 15,800 cubic yards (Daniel Island). Over six (6) miles of small diameter (48οΎ” diameter Hobas pipe) was backfilled at depths of 100 feet to 150 feet utilizing work shafts at distances between 5,000 feet to 7,000 feet. 200 psi flyash/cement cellular concrete backfill was successfully installed on this project. This project was completed ahead of schedule.