Seismic Upgrades of the Claremont Tunnel
Abstract
The East Bay Municipal Utility District is undertaking seismic upgrades of the Claremont Tunnel in the San Francisco Bay area. The tunnel carries treated water across the active Hayward Fault to supply a major metropolitan area. Studies indicate the tunnel could be severed by fault offset during a major seismic event. A design approach to achieve limited operation of the tunnel following fault displacement has been established and design details are currently being evaluated. This paper describes the project, the design approach, and summarizes significant construction constraints.
2001
Rapid Excavation Tunneling Conference (RETC) Proceedings
D. Scott Kieffer
Jacobs Associates
R. John Caulfield
Jacobs Associates
Bill Cain
East Bay Municipal Utility District
