Birdwatch Note Rating
2023-07-19 04:07:12 UTC - HELPFUL
Rated by Participant: 86A8AA74BF89B151753C0F266D528976981FF35EC925C1DD16B1A6FD42784AD1
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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