Reply #35: but doesn't usually cause buildings to collapse, [View All]

[rman]

unless the integrity of the entire structure has been compromised, as is the case in CD.

Just -some- damage to a building does not make it collapse like a house of cards.
Just look at the other WTC buildings that were evetually taken down by CD; those were heavily damaged - far more then the towers and WTC7 - but they did not collapse.