Birdwatch Note Rating
2023-07-18 00:28:39 UTC - HELPFUL
Rated by Participant: 6C2314DCC06FD358AF22F436B0AC9558ED3CB3699DC7E635C0B9242C6FAB2D69
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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