A note from the engineer of record on an approved shop drawing for San Francisco's Salesforce Transit Center appears to have initiated an instruction to the steel fabricator to cut two 2-in. x 4-in. holes in the bottom flanges of the hub's built-up plate girders.
The International Code Council has announced that all 14 tall mass-timber model-code change proposals unofficially passed the ballot for inclusion in the 2021 International Building Code.
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.
The American Concrete Institute is publishing the complete draft of the proposed “ACI 318-19: Building Code Requirements for Structural Concrete” for a 45-day public review starting Dec. 21.
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.
Environmental advocacy group Mighty Earth’s call to action to reduce the carbon footprint of structural-steel production is well intended but naive, say construction and steel-sector firms.
An independent panel of experts in steel structures, fracture mechanics and metallurgy is reviewing every step taken by the Transbay Joint Powers Authority team investigating the cause of two cracked girders at the Salesforce Transit Center in San Francisco.