Birdwatch Note Rating
2023-07-17 17:40:10 UTC - HELPFUL
Rated by Participant: 35501A3F9249E0893FE8C3514D973D88E8F5B89C574D70BF34F21D74BD5E8246
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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