Not, really....It is just a fact based on the design of the buildings. The notion that the perimeter columns carried 100% of the gravity load, as you contended, is false (movie terrain, if you will).
The perimeter columns shared the gravity load with the core columns and were nowhere near the maximum design load (I think that I read that the core columns were at 20% capacity and the perimeter columns were at 50% capacity). The buildings were designed to survive a strike from a 707 and had an incredible amount of redundancy designed and built into them. The damage to the structures, as a result of the aircraft impacts, does not explain the symmetrical collapses at near free-fall speeds.
In fact, NIST threw out the original pancake theory and, in the end, refused to even report on the collapses themselves. The fires, also, do not explain the symmetrical collapses at near free-fall speeds.
So, what does?
The Underwriters Laboratory's and NIST's testing of models, under the same conditions, failed to produce a collapse of any sort.
So, how did we get three symmetrical collapses at near free-fall speeds in the same day? What is the probabilty of that occurrence?
Speaking of physics, how does one explain the conservation of momentum and energy in these collapses?
I was a Green Beret. I was on a Green Light nuclear weapons team.
Thank you for your service.
The delusin that there exists some team, crew, company that could, out of the box pull off this is the terrain of movie fans.
You didn't seem to mind your delusion that omitted the 47 huge core columns...movie fans seem to love that one, though.
And...prior to the collapse of these buildings, had you never seen a symmetrical collapse of a building? Obviously, it has been done before, which was a result of the work of expert crews, and was not the terrain of movie fans.
The WTT were unique in their structure. And, by the way, none had been controlled demolition ever. Another varible, that the ghost company had to deal with.
All falling objects approach free fall. Don't know what so special about that.
I doubt the WTT where designed to withstand a 707 impact. Please give me a link to the original source engineering specs.