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[–]JasonCarswell 1 insightful - 3 fun1 insightful - 2 fun2 insightful - 3 fun -  (0 children)

We must clearly recognize the distinction.

Without the internal structural reinforcement building within a building WTC7 would have fallen at freefall speed.

Because of the extra support WTC7 actually fell at near freefall speed.

A distinction without a difference, near enough.

[–]Aetherist[S] 4 insightful - 1 fun4 insightful - 0 fun5 insightful - 1 fun -  (0 children)

Pull quotes from the article


''We built in enough redundancy to allow entire portions of floors to be removed without affecting the building's structural integrity, on the assumption that someone might need double-height floors,'' said Larry Silverstein, president of the company.


MORE than 375 tons of steel - requiring 12 miles of welding - will be installed to reinforce floors for Salomon's extra equipment. Sections of the existing stone facade and steel bracing will be temporarily removed so that workers using a roof crane can hoist nine diesel generators onto the tower's fifth floor, where they will become the core of a back-up power station.