The Salt Lake Tribune published an article recently on some trenching activity by the Utah Geologic Survey and the USGS to better date past movements on this active fault.
Geologic Hazards
Taiwan M6.8 Earthquake Causes Major Destruction
A magnitude 6.8 earthquake struck Taiwan on September 19th, toppling buildings and bridges, derailing trains, and causing widespread disruption of services and communications. According to the BBC, at least one person was killed and 146 […]
Geologic Hazards
Impact Test of Modular Rockfall Protection Wall
The magnitude 7.8 earthquake in Kaikoura New Zealand in 2016 caused over 50 landslides along State Highway 1, north and south of the Town. The team of engineers tasked with reopening the corridor to road and rail traffic […]
Project Related
The Claremont Tunnel – Designed to Survive Fault Rupture on the Hayward Fault
The Claremont tunnel beneath the Berkeley Hills on the east side of Oakland is a water supply tunnel that serves over 800,000 customers in Richmond, Oakland, San Leandro and neighboring communities. One of the unique things about the tunnel is that it crosses the active Hayward Fault. Most of the time when you talk about designing for earthquakes you’re talking about designing to withstand the seismic forces. In this case, the designers needed the water transmission tunnel to withstand up to 7.5-ft of offset due to fault slip and still maintain a minimum level of service. (Photo credit: Sue Bednarz, Jacobs Associates, Inc. by way of Civil Engineering Magazine)
This post describes the relatively recent Claremont Tunnel Seismic Upgrade Project as reported in Civil Engineering Magazine (May 2008, v. 78, no. 5, pp 58-63, 96-97).