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Politics : Bush-The Mastermind behind 9/11?

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To: Don Earl who wrote (5717)3/19/2004 1:18:31 PM
From: zonder  Read Replies (1) of 20039
 
Nonsense

Only if you have never studied construction. I have.

The Empire State building is entirely reinforced concrete.

I think you are wrong on the "entirely" part. If I recall correctly, its SLABS (i.e. floors) are reinforced concrete, while the FRAME is steel. The presence of reinforced concrete might actually be how the building survived the crash of a B-25 bomber in 1945.

Again, I am writing this from memory, but from what I recall, the only reason why there was more concrete used in the construction of Empire State Building was to save steel which was in shortage as it was needed for war production - the steel they saved was enough to build a battleship. The use of concrete ramps rather than elevators reduced the need for steel in the structure.

In other words, you might want to take back that "nonsense" remark :-)

You appear to be making this stuff up as you go along

No. Rather, I am recalling one full semester course I took on "Structure" and another full semester course I took on "Strength" (of materials).

There has never been a case of a steel building collapsing as a result of fire

Possibly. Frankly, the issue is not worth the half hour I would have to spend on Google checking on that statement. The fact remains that steel structures are weak against fire, which reduces their load bearing strength. It is taught in schools that way, and there is a reason for that. Any civic engineed would be able to tell you that.
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