Originally Posted by RF_Erick

http://911research.wtc7.net/wtc/evid...s/site1099.jpg
Does that look like 2 main columns?
Earlier you said a central column.
"The main structure of the building was a central beam system surrounded on the outside by smaller beams. The fire was in the center by the beams."

Wouldnt the columns on every single floor have to weaken all the way to the ground for it to pancake without any resistance?