Steel for bridge made to spec: Gerdau

May 22, 2013 | 03:50 PM | Frank Haflich

Tags  Gerdau, San Francisico-Oakland Bay Bridge, Monnig, Dyson, steel, anchor rods, bridge, fabrication steel rod

LOS ANGELES — Gerdau Long Steel North America says that the steel it produced to create anchor rods for the San Francisco-Oakland Bay Bridge that have since failed met the specifications "it was ordered to."

A spokesman for San Francisco’s Metropolitan Transportation Commission (MTC) said last week that U.S. subsidiaries of Brazilian steelmaker Gerdau SA produced the steel that was turned into rod for the bridge’s new east span.

The metallurgical condition of the 2008 anchor rods was "less than ideal," with a "higher-than-normal susceptibility" to hydrogen embrittlement, Malcolm Dougherty, director of the California Department of Transportation (Caltrans), said during a meeting of California’s Toll Bridge Program Oversight Committee. The same description was used in a Caltrans analysis of the rods.....





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