"chico chupacabra" > wrote in message ...
> Lesley, who flunked out of engineering school
No, as you have been informed repeatedly, fool.
> > ...Let's see you address this:
>
> G-R-A-V-I-T-Y. It's why objects fall to earth. Dipshit.
Only if the support is broken at multiple points throughout the
height of the three (3) structures. There were 47 huge central
steel support columns embedded within concrete (and with an
external layer of insulation) in WTC 1 & 2, and 24 in WTC 7.
We know that:
'The WTC, on this low-wind day, was likely not stressed more than
a third of the design allowable, which is roughly one-fifth of the yield
strength of the steel. Even with its strength halved, the steel could still
support two to three times the stresses imposed by a 650°C fire.'
http://www.tms.org/pubs/journals/JOM...agar-0112.html
So what went wrong, 'chico'? Tell us how you think it happened.
WELL?