Birdwatch Note Rating
2023-07-17 14:38:28 UTC - HELPFUL
Rated by Participant: 295B90DCE691FE1962C7938B7835E3489B2D5F763A1784C1370CCB644015A767
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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