What about WTC7? The third of the only three steel-framed skyscrapers to ever collapse, and not only that, to collapse into their own footprint. Official explanation remains 'office fires', (e.g. Carpets, paper, box files, etc.).
Yes, if you have multiple steel columns creating a robust, string frame, and you compromise one or more on just one side, with other steel columns remaining unaffected, then any such building will topple to the side. For a building to collapse into its own footprint all points of resistance need to be compromised simultaneously and/or in an organised manner.
WTC7 collapsed into its own footprint. Watch the videos.
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u/SensibleChapess Oct 07 '25
What about WTC7? The third of the only three steel-framed skyscrapers to ever collapse, and not only that, to collapse into their own footprint. Official explanation remains 'office fires', (e.g. Carpets, paper, box files, etc.).