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Politics : Bush-The Mastermind behind 9/11?
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To: TigerPaw who wrote (14988)9/7/2006 12:46:57 AM
From: Orcastraiter  Read Replies (1) of 20039
 
Does eyewitness claim that a building would fall faster if it's lower floor were blown out than if the same lower floor failed from stress? If so, why?


Elementary my Dear Tiger. Failures due to stress absorb energy. That takes additional time. Buckling columns are like giant springs that damp the downward movement of a building above. The strength to weight ratio of steel and it's ductility make it impossible to fail in a free fall manner. That difference in time would have been very evident right from the first floor collapse. That first floor went at free fall speed, as well as every other floor. There was no damping action what so ever.
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