Friday, November 6, 2009

NIST Tests Provide Fire Resistance Data on World Trade Center Floor Systems

Published Friday, August 27, 2004

The Commerce Department’s National Institute of Standards and Technology today reported that results from a series of four fire resistance tests conducted this month on composite concrete-steel trussed floor systems typical of those used in the World Trade Center towers showed that the test structures were able to withstand standard fire conditions for between one and two hours. The tests are part of NIST’s building and fire safety investigation of the WTC disaster on Sept. 11, 2001. The 1968 New York City building code – the code that the towers were intended but not required to meet when ...

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