Birdwatch Note Rating
2023-07-17 18:27:04 UTC - HELPFUL
Rated by Participant: 295557DFB8C547B19A7699605E4947696D898528E041F4E5CCA7A9DB8EE840F7
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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