Quote:
Originally Posted by MediaGuy
Then wood and office walls burned hot enough to melt steel, forge swords, liquefy man's most tensile alloy in history within minutes?
A building like that as you say was specially constructed to withstand multiples of the very forces apparently applied to it that day, as well as those to which you refer.
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Again, the steel was *weakened* because of the heat. Whether it actually melted or not is irrelevant. Have a look at the schematics of the trusses. It makes perfect sense that they would collapse with much of their strength depleted. Ask any competent engineer.
The building was designed to withstand the fact that it was the tallest building in the world. That alone puts enormous stress its components. It was probably not designed to withstand a deliberate military type attack with a fully loaded 757 slamming in at 500 MPH.