In article ,
TRUTH wrote:

From Jones' paper:
http://www.physics.byu.edu/research/energy/htm7.html

There were twenty-four huge steel support columns inside WTC 7 as well as
huge trusses, arranged non-symmetrically, along with some fifty-seven
perimeter columns, as indicated in the diagram below (FEMA, 2002, chapter
5; NIST, 2005).

Yes, and when the fire burned for a wile, those 24 "huge" (not that
huge, actually) columns got moderately hot, they lost enough strength to
fail.

The thing about huge building like these is that when one part fails,
the rest of the building is almost never designed to handle the
asymmetrical stresses from that failure. Knocking a skyscraper down is
easy, knocking it down *accurately* is the hard part.