Quote:
Originally Posted by pmax
When the foundation gives way, all bets are off.
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The foundation didn't give way in that section of the building. All of the columns are still there, indicating that the foundation is intact. The entire slab failed where it attached to the columns and it dropped to the level below, as far as it could until it encountered (and crushed) the cars below it. Those columns didn't have much of a load on them, just the weight of one floor of parking.
No idea what the foundation did in the area where the building collapsed.