Birdwatch Note Rating
2023-07-17 19:20:34 UTC - HELPFUL
Rated by Participant: 5160F30E96CA65A7B3B22AB273C0EE2DC4C4C2A85951FBD83979783F155D1FE1
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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