Birdwatch Note Rating
2023-07-17 21:55:31 UTC - HELPFUL
Rated by Participant: 772A9F6EC0A9E9D56A4D75F1F67253D12DAB5BE9053EF7956FEF2876748610CB
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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