The Prof
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an sf chron story picked up by ap and carried by abc
Bay Bridge has bolts similar to others that are banned because they can crack | abc7news.com
the eastern span of the oakland-sf bay bridge is already 10 years late and 4B overbudget
a lot of the work is being done in china, and there have been lots of problems with it
Much-delayed Bay Bridge retrofit feels growing pains | San Francisco Examiner
Broken bolts may delay Bay Bridge opening - SFGate
California Turns To China For New Bay Bridge : NPR
so much adversity this state can't survive
there's also the 68 billion dollar hi speed train to nowhere
California high-speed rail to nowhere – Anderson Cooper 360 - CNN.com
at least we're gonna get a homeless bill of rights
Updated homeless 'bill of rights' passes CA legislative committee: Sacbee
which is good
cuz the way we're going an awful lot of californians are gonna need it
Bay Bridge has bolts similar to others that are banned because they can crack | abc7news.com
The new eastern span of the San Francisco-Oakland Bay Bridge has more than 1,200 bolts made from galvanized steel that is virtually identical to a high-strength alloy that a nationwide group of transportation officials banned for use on bridges because the bolts can crack, the San Francisco Chronicle reported Sunday.
The bolts are used to anchor structures designed to keep the bridge stable in an earthquake, band the main cables together, hold the cables down at the top of the tower and bind them to the road decks.
Caltrans said last week that it was testing 192 bolts on the bridge that are similar to 32 galvanized bolts that cracked when workers tightened them in March.
The failed bolts were among 96 supplied in 2008 by Ohio-based Dyson Corp., the same firm that delivered the batch of 192 bolts two years later, The Chronicle said. Documents examined by The Chronicle show that state has purchased 932 other fasteners for the bridge in the past five years that - like the failed bolts - were made of high-strength, galvanized steel.
"This is completely the wrong material for use in this application," Charles McMahon, emeritus professor of materials science at the University of Pennsylvania, told The Chronicle. "I have devoted decades of my career to studying this. This steel is almost guaranteed to give you cracking under these conditions."
the eastern span of the oakland-sf bay bridge is already 10 years late and 4B overbudget
a lot of the work is being done in china, and there have been lots of problems with it
Much-delayed Bay Bridge retrofit feels growing pains | San Francisco Examiner
Broken bolts may delay Bay Bridge opening - SFGate
California Turns To China For New Bay Bridge : NPR
so much adversity this state can't survive
there's also the 68 billion dollar hi speed train to nowhere
California high-speed rail to nowhere – Anderson Cooper 360 - CNN.com
at least we're gonna get a homeless bill of rights
Updated homeless 'bill of rights' passes CA legislative committee: Sacbee
which is good
cuz the way we're going an awful lot of californians are gonna need it
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