justin_o_guy2 wrote on 10/02/12 at 22:45:37:Okay, I watched it. They show distortion & buckling on the perimeter. Doesnt explain the core colums. Doesnt explain the entire structure collapsing. Sure doesnt explain the cement pulverised. Doesnt answer the questions. If it does for you,, well,, what can I say? Its no where near enough for me., & Id truly love to see architects & engineers response to this.
OK I am a civil engineer. I am not watching some rambling fools's video ... however I can tell you this ... buildings are designed to stand loading in 1 direction. Vertical. They are barely designed to stand the wind load in that location. Like drag a building from NY to chicago and it will crumble like a stack of pringles in the wind (if it ineed is windier than NY - cos it is called windy city cos of windbag politicians) ...
A building with missing columns on the perimeter will spectacularly fail ...
We design building to be under reinforced and exibit "plastic failure" not elastic failure.
There is very little concrete in the structural system of a building, its all steel. Concrete is far too heavy to build over 20 floors or so.
The philosophy behind a foundation is this ... the building with all its contents, needs to weigh less than the amount of dirt excavated, or to a 75% depth of the piles driven ... some formula in there ... anyway 100 storey buildings are lighter than 10-12 storeys of dirt, so we dig that far.
Ergo in layman's terms - building+all the people+desks+furniture etc = what we dig. Now to that nice little equation, Lets add a little 767 with 100 people on board and just place it nose first on top, not flyinf, just sit it there. You have by now far exceeded the rated capacity of that building. Its likely to still stand, but only if we have been lucky, we may have hit rock @ the foundation stage, we may have not found the 120 wall I beams when it was being built and someone used 125 wall .... etc etc etc, you're leaning on luck.
Then Add the fact that the plane was flying a 2-300 mph atleast and the fact we have a huge pool of burning jet fuel, office furniture, and assorted materials - assume 700f (which is low) ... I seriously see the buiding cracking and crumbling ... Heat obviously takes time to burn away the insulation on the beams (they spray them with a sorta foam - needed for both heat resistance in case of fire and for keeping heat bills manageable in winter) before the steel starts to bend and give.
BTW there was a huge highway fire in LA a few years ago - may have been 1998 or so, where a tanker caught fire and lit up a lot of things near it and caused a huge fire storm ... and the huge highway interchange signs were begining to give and warp ... and what every one heard from that was a screaming and metallic bang bang sound like it was hit with a sledge hammer.
However I am with you when you say Cheney made them do it, and he caused the building to fall down with just his evil doing nature ... So I am good. Oh yea Cheney also made the LA tanker fire ...
Cool.
Srinath.