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.
Italy’s largest contractor Salini Impregilo S.p.A. and state-controlled shipbuilding giant Fincantieri Infrastructure have won a contract to rebuild the collapsed Polcevera Viaduct in Genoa.
The proposed bypass fix for the troubled Fremont Street girders of San Francisco's Salesforce Transit Center calls for bolting 20-in.-wide steel cover plates above and below the fractured bottom flange, like a double splint.