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ENR > Buildings > Study Absolves Twin Tower Trusses, Fireproofing
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| Description |
| The most comprehensive study yet on the destruction of the World Trade Center concludes that columns robbed of fireproofing failed first--not floor trusses--when the twin 110-story towers collapsed after being hit by terrorist plane attacks on Sept. 11, 2001. The proof is in the smoke that emanated from the burning towers before the collapses.
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