posted by Watcher-In-The-Shadows
reply to post by _BoneZ_
The following comment is fallacious and shows a lack of understanding of physics:
Buildings do not fall down like that unless every single support column was severed at exactly the same time. Fires don't do that and never will.
No building is as near invincible as that.
You totally missed the point. Like that means a collapse with all the structural support sheared simultaneously, allowing the bulding to collapse vertically with the roof lines parallel with the ground as in WTC7.
Like that means not toppling to one side or the other, but falling vertically at near free-fall speed because all the structural support was sheared simultaneously such as the towers. If structural support remained on one side of any of the buildings, then that building would topple away from that support. If the support structure was not removed, then each building would fall much more slowly; having to overcome the vertical support at each floor level.
Building invincibility has nothing to do with it.
post by nick7261
Look at the above photo. Specifically, look at front roofline of WTC7. As the building falls, this roofline stays pretty much parallel to the ground from start to finish. Also look at the roofline on the right side of WTC7. It stays parallel to the ground as the building falls too.
The fact that the rooflines fall parallel means that the collapse of WTC7 started precisely simultaneously beneath every beam supporting both rooflines. Because gravity causes objects to accelerate as they fall, an object that begins falling first will always stay ahead of an object that begins falling afterwards.
As seen by the rooflines, the entire structure begins falling at the same time.
This can ONLY mean that the resistance holding the entire structure up vanished instantly.
