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The Bay Bridge has two major sections: the western suspension spans and their approach structures between San Francisco and Yerba Buena Island (YBI) and the structures between YBI and the eastern terminus in Oakland. The original eastern section was composed of a double balanced cantilever span, five through-truss spans, and a truss causeway.
Hydrogen embrittlement (HE), also known as hydrogen-assisted cracking or hydrogen-induced cracking (HIC), is a reduction in the ductility of a metal due to absorbed hydrogen. Hydrogen atoms are small and can permeate solid metals.
The official name of the bridge for all functional purposes has always been the "San Francisco–Oakland Bay Bridge", and, by most local people, it is referred to simply as "the Bay Bridge". Rolph, a Mayor of San Francisco from 1912 to 1931, was the Governor of California at the time construction of the bridge began. He died in office on June 2 ...
In the decade after they went up, the 25,000 LED lights illuminating the western side of the Bay Bridge endured a brutal pounding.
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HIC or HAC - hydrogen induced or hydrogen assisted cracking is a real weldability concern that must be addressed in HY-80 steels. Hydrogen embrittlement is a high risk under all conditions for HY-80 and falls into zone 3 for the AWS method. [19] HAC/HIC can occur in either the Fusion Zone or the Heat Affected Zone. [20]
A man involved in a collision on the San Francisco Oakland Bay Bridge fled the scene by jumping into the water, the California Highway Patrol said.
Hydrogen embrittlement may occur as a side effect of electroplating processes. Delayed failure is the fracture of a component under stress after an elapsed time, is a characteristic feature of hydrogen embrittlement (2). Hydrogen entry into the material may be effected during plating, pickling, phosphating, melting, casting or welding.