How Transfer Structure Failure Led to “Free Fall” acceleration for part of WTC7’s Collapse.

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A fire in the mechanical room would heat columns 77 and 80 as well as the diagonals of truss 2 which connects them. As these columns lose their capacity, their load is transferred to columns 76, 79, and 81. Likewise, the exposed and partially heated truss 1 is also losing capacity due to heating thus transferring its own capacity to the core and to column 79. Given that column 79 is likely to have been heated due to a diesel fire in its location ... Read even more

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