Birdwatch Note Rating
2023-07-18 15:40:53 UTC - HELPFUL
Rated by Participant: A1A809266041BBD8E0AD4F46D56DB77E556FB68EDABC68F8F46AF69B2CB3F75C
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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