Originally posted by bsbray11
I didn't say they would be. Re-read what I said. Also by significantly longer than an HE pressure wave I'm still thinking only a second or two
max.
Mainly, for me, personally, because I don't believe there was any "pancaking," for a lot of other reasons. Difference of opinions I guess.
By looking at the Ground Zero photos.
So you're suggesting more mass "stuck around" until towards the end of the collapses, right? Before making its way out of the footprints to its
final resting place.
A couple problems that I have with this are that the debris would not be able to go as far horizontally if it were launched from a floor closer to the
ground (unless it were going faster, proportionately, to make up for it, which is more energy taken from the total potential energy of the falling
mass), and this theory doesn't really match up with videos I watch that show debris start coming out steadily once the floor-by-floor sequence
begins.
And to get that energy applied in that direction from a "bounce," which is technically a spring mechanism (pressure applied to the steel
dynamically, then an equilibrium is reached, then the steel "pushes" back), it has to fall or etc. onto the other object from that angle.

1- We agree. This could work. But again I'll just add that air is forced out and could provide energy without the need of Heating by a thermal....
whatever.
2- I was lazy when i typed "pancaking". What I meant to say that as the accumulated debris fell, and acted as a united collapse front that could
push out the air.
3- I see a roughly pyramid shape, as I would expect. Your points have merit, but I see no way to resolve "when".
4- The parts that were far from the collapse pile presumably wouldn't have added anything to the collapse energy. Agree?
5- yep, hard to justify what I'm saying. Just saying that it's more likely than explosives doing it since explosives couldn't go unnoticed. yes, I
know YOU'RE not saying that. Just adding that part for noobs.