Birdwatch Archive

Birdwatch Note Rating

2023-07-19 08:41:02 UTC - HELPFUL

Rated by Participant: 7F133870E814986D3449A1AEE4592335773F6527E62CA2DE8C3C3B34C6B04E72
Participant Details

Original Note:

Steel structure doesn’t need to reach melting temperature to fail. The crash and resulting fire weakened the floors and columns with dislodged fireproofing to the point where floors sagged and pulled inward on the perimeter columns. https://www.nist.gov/world-trade-center-investigation/study-faqs/wtc-towers-investigation

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Original Tweet

All Information

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