Birdwatch Note Rating
2023-07-19 13:33:13 UTC - HELPFUL
Rated by Participant: 3180DE969A4166296A039AC6718A105BE8C0435829A291FB1E3A852604388863
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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