Birdwatch Note Rating
2023-07-17 22:07:24 UTC - HELPFUL
Rated by Participant: 270E860B16B1A85905C356EEAC91DDD97C66664F3BBEA065ED51EA7897454859
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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