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Originally Posted by willravel
The buildings fell at basically a free fall speed. Are you suggesting that the copllapsing debris and dust inside the building were moving fast that free fall speeds? Do you know how much pressure that would take?
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I think you missed a few words in this post, but have you ever worked a bellows?
Your arms move slowly, the air moves very fast. This is because the air is channeled and under pressure. I don't know about you but I think several thosand pounds of falling concrete will create a good deal of pressure. Not to mention that as things break they will shatter at supersonic speeds due to the nature of crack propagation, which would shoot debris out VERY fast with 'explosive' force. Its why an instron machine needs a shield when testing materials in compression.
Edit:Pounds should be TONS