Quote Originally Posted by thcbongman
First you assume the fire was the main cause that brought it down. It was a structural collapse. Since the majority of the support beams were in the center, which is designed this way to sustain the high winds above. All it takes is a few floors to buckle down, and the supports in the center collapses like dominos. It it seemed like a controlled-demolition, it wasn't. The support beams were in the middle and the direction would be going straight down, which would seem like an implosion.

http://www.pbs.org/wgbh/nova/wtc/metal.html#

http://wtc.nist.gov/pubs/NCSTAR1-2ExecutiveSummary.pdf
Thank you for using your head...... using logic is good.:thumbsup: