Birdwatch Note Rating
2023-07-18 00:31:25 UTC - HELPFUL
Rated by Participant: 15EDD6049658FD9BBF4A0E15CAA26B3C0ABDD9C9C2F228F3C027F1EDDE0D0787
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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