I have a few questions to pose then:
1) The South Tower Collapse: Why did the top (approx) 1/3rd of the building tilt and then proceed to collapse completely and symmetrically straight
down?
Logic would dictate that since the center of gravity of the top portion would no longer be directly over the core of the building, that it would take
the path of LEAST resistance - that being falling completely off of the bottom portion of the building.
2) The North Tower Collapse: The central core of the building (the part that offers the MOST resistance in a collapse) is not excessively large but
very compact. How is it that the top (approx) 15% of the building fell completely and symmetrically through the entire bottom 85%? Doesn't the
steel get thicker as you go DOWN the building? How does the top 15% even have enough MASS and FORCE to travel through the entire bottom 85 floors?
3) If the planes hitting the building caused the fire protection to "blow off", wouldn't the steel "weaken" extremely un-evenly?
4) If the central core was mostly "elevator shafts and stairways" how did the fires manage to burn hot enough and long enough to weaken the steel?
www.pbs.org... (inferno part 4) Jet fuel burns on in definately less than 10 minutes.
I'd be eternally greatful if you could help me with these questions.
-AD