Birdwatch Note Rating
2023-07-17 22:17:33 UTC - HELPFUL
Rated by Participant: 9DEB7652A29B0897B870826EAD7FDFC02D68754F4C92822D46C7A4AB98DE4722
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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