How did the WTC towers collapse: A new theory

A. S. Usmani, Y. C. Chung, J. L. Torero

Research output: Contribution to journalArticlepeer-review

175 Scopus citations


A finite-element model was used to investigate the stability of the Twin-Towers of the World Trade Center, New York for a number of different fire scenarios. The fire scenarios included were based upon the likely fires that could have occurred as a result of the attack. A consensus of sorts that the fires that burned in the structures after the attack had a big part to play in this collapse.

Original languageEnglish
Pages (from-to)501-533
Number of pages33
JournalFire Safety Journal
Issue number6
StatePublished - Oct 2003


  • Collapse mechanisms
  • Stability of tall buildings
  • Structures in fire
  • WTC towers


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