Originally Posted by Rochard

But this doesn't surprise me at all.

I know that the Empire State building was hit in the 1940s and is obviously still standing. But your talking about a much smaller plane and a completely different building. The WTC was supported by the outer walls and the inner core. Compromise both and toss in tens of thousands of gallons of jet grade fuel and it's only a matter of time.

Does it look like a controlled demolition? It sure does. But that's because when they blow a building, they do it one floor at a time so they collapse on each other. With the WTC, the buildings fell in a similar way - because each floor gave way one at a time. The floors just couldn't support the weight above it.