Birdwatch Note Rating
2023-07-19 02:08:13 UTC - HELPFUL
Rated by Participant: 1A21B2BEDC9C89627BD180A8F6640BDC8AB50BB930B0C0A13BC60CFDF822038C
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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