NIST Video: Why the Building (WTC7) Fell

Unlocking_Freedom
Published on Sep 28, 2020
The National Institute of Standards and Technology (NIST) conducted an extensive three-year scientific and technical investigation of the Sept. 11, 2001, collapse of the 47-story World Trade Center building 7 (WTC 7) in New York City. This video describes the results of this study, which concluded that fires on multiple floors in WTC 7--which were uncontrolled but otherwise similar to fires experienced in other tall buildings--caused an extraordinary event. Heating of floor beams and girders caused a critical support column to fail, initiating a fire-induced progressive collapse that brought the building down.

For more info visit:
http://www.nist.gov/public_affairs/factsheet/wtc_qa_082108.cfm

Add to

Please Sign In or Create Account to use this feature!

Flag Video

Please Sign In or Create Account to use this feature!

Rate video

Please Sign In or Create Account to use this feature!

Rate video

Please Sign In or Create Account to use this feature!

DISCLAIMER

The content presented in this stream and/or video may be satirical in nature for entertainment purposes. It may contain realistic scenarios that may include themes of racism, anti-semitism, anti-LGBT sentiment and even elements such as death threats, all purely in the context of parody. In addition, this content may depict or refer to acts of violence in a satirical manner. Shock factor is a common and deliberate element used in these displays to emphasise the satirical message. By continuing to view this content, you acknowledge that you understand the satirical nature of this content, including the depiction of violence and the use of shock factor, and agree that you will not use or interpret this content outside of its intended context. Please remember that humour and satire are complex; they are not intended to belittle or demean, but to engage and challenge social norms through exaggeration. If you have any concerns about content, please feel free to engage in constructive dialogue or report issues to GTV staff.