Professor Moehle Inspects BART Transbay Tube

Professor Jack Moehle recently lead a tour of the BART Transbay tube and discussed work needed for it to withstand a major earthquake. The tube was built in the 1960's using the best information about earthquake resistance at the time. Engineers now have forty more years of experience and Prof. Moehle and others recommend limiting the amount the tube can move in an earthquake. This could be accomplished by adding concrete caissons connected to bedrock, and by compacting the sand and gravel surrounding the tube.



SF Chronicle Article about the inspection

Contra Costa Times Article

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