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From USGS CoreCast.
What Would a Large Earthquake Do to Downtown L.A.?
Project Related
Devil’s Slide Breakthrough Video and Links
The “breakthrough” media event for CALTRANS’ Devil’s Slide Tunnel project was this past Friday. A large crowd of politicians, news crews and locals were on hand as a road-header broke through a shotcrete face in a ceremony to mark the completion of the excavation portion of the first of two tunnels. It will still be over a year until the tunnels are opened to traffic. The second tunnel is expected to breakthrough as early as this week. (Photo by SFGate.com)
Caltrans tunnel punch-through from Barry Parr on Vimeo.
The Video came from the Coastsider, the page also has comments from the videographer, Barry Parr, which offer a good perspective on the event.
Click on through for more links etc.
Failures
Pile load test accident, dead load topples into street (Video)
A pile static load test went awry in Singapore when a pyramid of dozens of concrete blocks used for the reaction force toppled over into Gilstead Road. The force of the collapse caused a gas main to rupture but there were no reports of injuries. Click through for the video.
Geologic Hazards
Regulators aware for years of understated seismic risks to nuclear plants
With the events in Japan on everyone’s mind, it’s of course to be expected that seismic safety at nuclear power plants in the U.S. becomes a hot topic. This article discusses how the Nuclear Regulatory […]