The independent panel reviewing the investigation of San Francisco’s troubled Salesforce Transit Center is tasked with both determining the cause of brittle fractures in two bottom flanges of twin built-up plate girders and assigning responsibility for the fractures, according to Ron Alameida, director of design and construction for the public owner, the Transbay Joint Powers Authority.
The steel fabricator for the third-floor tapered, built-up plate girders at the troubled Salesforce Transit Center in San Francisco is calling for a girder-hanger connection design review as part of the probe into the causes of brittle fractures in bottom flanges of twin 80-ft-long members that bridge Fremont Street.