wrote in message oups.com...


No steel framed building has ever collapsed by fire EVER! The owner of
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That "is" the whole point. The WTC was NOT a typical steel frame
building. Most Hi Rises make use of huge steel girders at there center and
encase these girders in tons of rebar and and more tons of concrete to form
massive support columns. Then floors are laid, attached to these massive
columns. The only way to bring "them" down is to take out the support
columns. The WTC bldgs. were of a totally different design. They built
those bldgs. using a technique where the exterior walls "were" built as the
supporting structure. The bldgs. had no massive center columns to fall back
on. Once you take out a huge section ( by a large airplane ) you remove
the support from everything above it. And then its just a matter of time
before things start falling. Its really too bad the bldgs were built that way.
If they had been conventional design, they would have had very bad
damage to a couple floors, but they wouldnt have fallen. And the death
toll would have been much, much less.



Jeff