The 58-story Millennium Tower in the Transbay district of San Francisco, which has sunk 18 in. and is tilting 2 in., is under even more scrutiny for possible structural defects since a window on the 36th floor cracked.
While widely accepted in Europe, designers and builders in the U.S. have struggled to take full advantage of mass timber because of current limitations in prescriptive codes.
The Structural Engineering Institute of the American Society of Civil Engineers and the Charles Pankow Foundation are beginning a $230,000 research project intended to advance the use of performance-based structural fire engineering.
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