NIST: Fire caused the collapse of WTC 7

“Uncontrolled building fires—similar to fires experienced in other tall buildings—caused an extraordinary event, the collapse of World Trade Center 7 (WTC 7),” S. Shyam Sunder, lead investigator for the National Institute of Standards and Technology (NIST), reported at a news conference in August. This conclusion was reached, Sunder said, “by reconstructing the building, beam by beam, column by column, connection by connection into a computer model.” The investigation results are included in a draft of the report and recommendations available online at; NIST was accepting comments on the document up to September 15, 2008. The study too...

To access this articles and others like, join the Fire Engineering Training Network today.

  Gain unlimited access to the most comprehensive database of firefighter training info in the world.

  Membership in the Fire Engineering Training Network includes:

  • Exclusive Online Access to News & Articles
  • Fire Engineering Magazine Historical Archives (Online-Only)
  • Annual Print Subscription to Fire Engineering Magazine
  • Annual Digital Subscription to Fire Engineering Magazine

Join Now

 Already a member? Scroll down to the Login form below to access this article.


FE Logo

Log into Fire Engineering and you'll have total access to the industry's leading online resource for finest training simulations, articles, instructional videos and much more.