posted on Mar, 11 2008 @ 11:32 AM
OK. We all know that NIST has stated that the floor trusses pulled the outer columns in to cause collapse initiation.
I'm wondering if they even considered this scenario and if not, why not?
My scenario (which I believe has more validity than NIST's theory):
The plane debris gathered at the core structure. This coincides with NIST.
The added weight of the plane caused the horizontal bracing of the core columns to fail.
Once enough support failed, the core columns buckled due to Euler's buckling.
This caused the floors to fall along with the core columns and pulled the outer columns in.
I believe my theory has more weight (pun intended) than the NIST theory of floor trusses alone pulling the outer columns in.
We recently had to do an analysis of a building where they wanted to add a small brick wall to an existing wall. We weren't sure if the beams would
be able to hold this weight (BTW, we figured out that they would but it was close). The weight of that brick wall would be significantly less than
the weight of an airplane IMO.