Birdwatch Note Rating
2023-07-17 19:32:34 UTC - HELPFUL
Rated by Participant: 6F1749A181D6EF5F4A868C2A901AD02C8ACA00A8D93F5D168EF7F4B13DCE142A
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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