Birdwatch Note Rating
2023-07-17 15:02:06 UTC - HELPFUL
Rated by Participant: 7C93774DF21C801D85A65FE241D666548C85B43799335DE81548E7B4FC8A01B0
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
All Note Details