Indonesia to Build Monumental Suspension Bridge in Ring of Fire
Geologic Hazards
Italian quake causes widespread damage
A magnitude 6.0 earthquake struck Italy on Sunday, killing several and leaving an estimated 3,000 people homeless. A number of renaissance era buildings were damaged or destroyed in a region known for it’s production of […]
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).
Geologic Hazards
Video of Earthquake Induced Rockfall Near-Miss in Eastern Taiwan
A dashcam video caught a near miss with a huge boulder in the Taroko Gorge in Eastern Taiwan on April 18, 2019. The rockfall was triggered by a 6.1 magnitude earthquake in the area, you […]