Originally Posted by excaza
Originally Posted by carlitos
I agree that Y tons of rubble may have the power to crush through or partially destroy a floor or floors below it.
I'm not sure even a moon-sized field or mountain of rubble, dropped from a height of 12 feet would entirely crush the WTC. No. If you had it coming down from a higher height, in a steady stream over a long period of time, we would certainly see some major damage. Total collapse? I'm not sure.
Because the buildings had inherent load-absorbing capacity, like any modern highrise. When force is coming from above, it is referring ultimately through the entire structure. It would take a much greater force, from a much greater height to "crush" the building. Gravity cannot do it, because the building's design prevents it, as do all modern highrise designs.