Originally Posted by MediaGuy

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Key words: "straight" down? Vertical "descents"? "Asymmetry"?

In other words, maybe one of the only three buildings ever to collapse from fire in the history of steel skyscraper construction could go straight down like a demolition against all odds. But three? Impossible.

If such collapses were possible - they would go down non-symmetrically, topple, crash sideways, tilt... not drop straight down.

IF pancaking weren't already discounted, by NIST most notably, then they shouldn't have crumbled completely down to their base - they would have stopped at some point and left a huge stack of concrete floors, not pulverized dust and match-stick piles of steel beams.

:D