Birdwatch Note Rating
2023-07-17 20:07:32 UTC - HELPFUL
Rated by Participant: 206B0097C6E4FC92742F9C162B237F58202130F31A29B008AD819FC91A88B6B6
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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