Workers have completed repairs of the fractured girders at the beleaguered Salesforce Transit Center in San Francisco, shuttered since late September, some six weeks after it opened.
A radiation-shielded, inflatable greenhouse with a hydroponic growing system designed by undergraduate students at Dartmouth College’s Thayer School of Engineering could sustain four astronauts on a 600-day mission to Mars as soon as 2030.
The International Living Future Institute, steward of the world’s most demanding sustainable-building program, is no longer satisfied with its boutique status as a third-party certifier of super-green buildings.
Help is on the way for structural engineers driving toward improving the efficiency, reliability and resilience of buildings through performance-based wind design.
The steel subcontractor and the fabricator for the problem bridge-like spans at San Francisco's Salesforce Transit Center are vigorously countering the Transbay Joint Powers Authority's contention that a construction error caused the brittle fractures of the hub’s two built-up plate girders.