As usual, this topic has degenerated into name calling. The righties, so afraid that the truth is that there was a conspiracy simply call names at people who are not afraid to look at the obvious.
When something happens for the first time and remains unexplained those with an open mind want proof. Assertions are not proof. NIST has offered no science for its assertion that fire caused a modern steel framed high rise to collapse at near free fall speeds.
There seems to be a basic misunderstanding of how such buildings are engineered. I do have a basic knowledge having installed a few structural steel elements (beams and columns). First know that in structural engineering there is the safety factor which in high rise buildings is a factor of four. In other words if the math dictates for instance that a beam should have a load bearing capacity of say 40 pounds per square foot then the design beam will have to have a load bearing capacity of 160 psf. The point is that these building are over engineered by a factor of four.
Secondly, all steel framed buildings have the steel structural elements coated in fire proof insulation calculated to withstand a complete conflagration of all potential furnishings and any combustible construction elements.
Finally, building seven is the only such building to ever have collapsed supposedly due to a moderate office fire. Yes moderate. Do a google search, you will find,any examples of similar buildings that were more involved in fire and burned longer yet had no total collapse. Just use your own eyes (look at the video of building seven, its obviously controlled demo)and common sense. If all it took to bring down a building was a fire, why are controlled demolition companies in business? If one wanted to bring down a building, just light it on fire!
I can't figure out who or how, I don't have the facts, but I'm not afraid to listen to licensed architects and structural engineers. If you have the courage of your conviction then Go to the AE911 site.
It's time for a real investigation by a real prosecutor with real subpoena power.if you name calling nay sayers are right you will have the proof. If real science is provided that shows that for the first time ever a fire caused the complete collapse of a modern steel framed high rise I will be prove wrong.
I'm not afraid how about you?