ABSTRACT

NIST NCSTAR 1-6: Federal Building and Fire Safety Investigation of the World Trade Center Disaster: Structural Fire Response and Probable Collapse Sequence of the World Trade Center Towers   [open pdf - 25MB]

"This report covers the characterization of the conditions of the WTC towers before the attacks, their weakening due to the aircraft impacts, the response of the structural systems to the subsequent growth and spread of fires, and the progression of local failures that led ultimately to the total collapse of both towers."

Report Number:
NIST NCSTAR 1-6
Author:
Publisher:
Date:
2005-10-26
Copyright:
Public Domain
Retrieved From:
http://wtc.nist.gov/reports_october05.htm
Format:
pdf
Media Type:
application/pdf
URL:
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