Quote:
Originally Posted by Shakula
Now, lets look from a logic standpoint.
Since when does steel melt at that temprature that the airplanes created?
Ive seen a few youtube videos where experts talk about this, they say it would lose about 30-40% of the normal strength. Even thoug the steel would lose its strenght to this point, it doesnt matter, it should still hold up..
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As someone who has a degree in fire science I'll just respond to this dumb ass quote because it's all over the place.
At 900 degrees steel will expand then contract.
The expanding and contracting will destroy any bolts or joints etc.. that hold it together. In fact, at high temps wood is actually a stronger material.
The steel in the towers did exactly this and finally gave away any support they provided then the collapse was due to the weight above the failure points.
This happens every day when buildings catch fire that have steel trusses.
Ask any fire fighter what type of building do they fear most and they will tell you buildings with steel trusses because the roofs will fall in on them. The WTC did the same thing but on a larger scale.