Telegraph Hill Rock Slope

Client: San Francisco Department of Public Works

Objective

Replace the existing sewer line on the side of Telegraph Hill, the home of San Francisco’s historic Coit Tower. 

Challenges

Dismantle the existing sewer main, setup a bypass to keep the system running and install a new 10” DIP main on the vertical face of the hill. This presented a unique challenge in installing the sewer almost vertically instead of the typical horizontal scenario in the ground.