Birdwatch Note Rating
2023-07-17 13:32:54 UTC - HELPFUL
Rated by Participant: DE66E4120DA09A101328409E18B6DC3DB338213C89BAB618D82854E1419E1A9F
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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