Birdwatch Note Rating
2023-07-17 15:24:08 UTC - HELPFUL
Rated by Participant: 260C52FBFBF2356A3351744F48052EB7D7C3F291087F2E4E50460F4B16556252
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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