Report: Design flaw, wrong steel caused convention center collapse

02/5/2008 | Google

The use of the wrong type of steel, combined with a design flaw, is to blame in the collapse of a concrete floor at Pittsburgh's David L. Lawrence Convention Center last year, according to a new report. Engineers recruited to investigate the collapse of the 30-by-60-foot slab of concrete concluded that a slotted bolt connection used to attach the support beam to an expansion joint was inappropriate.

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