This thread is the height of nonsense! Any report as to "why" the towers fell must inevitably end with the simple fact that no one designs any building to take that kind of punishment. Period. If we are going to continue to build towers of that proportion, it strikes me as inconseivable that they will withstand a hit of the same magnitude. If we are trying to affix blame for the collapse, it's ludicrous. They fell. Many died. It was a terrorist attack and very successful.

Drop the subject unless you are some kind of structural engineer......and if you are, have the good sense not to continue this unproductive discussion.

Spaw