Birdwatch Note Rating
2024-08-13 11:42:11 UTC - HELPFUL
Rated by Participant: BF7BE8C9B9536147E161FBBC4498DBC7640799456BB46694EDCEDF970FC60EB1
Participant Details
Original Note:
According to NIST, the collapse was initiated by fires ignited by debris from the collapse of the nearby North Tower. The fires caused thermal expansion in floor beams, leading to the failure of a critical column (Column 79), which triggered a progressive collapse. https://www.nist.gov/world-trade-center-investigation/study-faqs/wtc-7-investigation https://www.govinfo.gov/content/pkg/GOVPUB-C13-4d4c17460292ee57ef313f6491fa8d1e/pdf/GOVPUB-C13-4d4c17460292ee57ef313f6491fa8d1e.pdf https://www.nist.gov/publications/final-report-collapse-world-trade-center-building-7-federal-building-and-fire-safety-0 https://www.commerce.gov/news/blog/2021/08/20-years-later-nists-world-trade-center-investigation-and-its-legacy
All Note Details