Birdwatch Note Rating
2023-07-17 19:03:24 UTC - HELPFUL
Rated by Participant: 8BD824D56208D26AC683328C07F1672150B44A6E587EE156A0FEA016875C0966
Participant Details
Original Note:
Steel loses its structural strength long before it melts. For the WTC to collapse, the beams did not have to melt, as it was enough that they lost their structural strength due to high temperature. https://www.researchgate.net/figure/Reduction-of-yield-strength-with-temperature-for-different-steel-grades_fig3_281580209
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