Birdwatch Note Rating
2023-07-17 19:54:37 UTC - HELPFUL
Rated by Participant: 137AD41EDE614F37290CB55B99C06F2816E1AAC2B635C7EB942E172D5398CBDC
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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