Quote:
Originally Posted by ken0042
Apparently there were both. What we could see from news footage from that day was two sides of each building comprimised. What this video shows was what we couldn't see; and that was the central core.
With the central core and two sides gone; I now see how the buildings came down "so easily."
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The perimeter columns supported virtually all lateral loads, such as wind loads, and shared the gravity loads with the core columns.
http://en.wikipedia.org/wiki/World_T...uctural_design
It does appear to be both, which is still more than most office towers. Regardless I don't dispute the fact that any building was hit by a plane. Nor I am surprised they fell down. I have a hard time understanding how some people don't believe that a building getting hit a plane must have some other factor that must have took it down.