Birdwatch Note Rating
2023-07-17 19:30:54 UTC - HELPFUL
Rated by Participant: 99384DF080D519CF327AB27E826E69FDEC1599DB69A2E7D0D1875129643B86CD
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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