The project involves upgrading the San Francisco City Hall structure to meet modern seismic safety standard and repairing the structural damage caused by the Loma Prieta earthquake.
Client: City and County of San Francisco
Location: San Francisco, CA
The project includes providing a base isolation structural system for the entire building involving a complete renovation of the foundation and basement level structure.
AGS was responsible for providing complete civil engineering services. This involved redesigning the north and south drives to match the new basement level elevations, designing the grading plan necessary for the foundation excavation, and drainage design for the new drives.
