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Analysis of fire and collapse theories and examination of related evidence.
Tom F.K. aka "tfk" implied some WTC7 perimeter inward bowing was never discussed before.
The last official theory based on an unsupported column length of 5 floors causing column 79 to buckle. "Unsupported" means the loss of lateral connections. I still don't know how an unsupported column could pull or push e.g. floor slaps horizontally. Nevertheless, I see forward for the details by tfk.
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