Does this say anything?
It may be better for you. I downloaded the entire NCSTAR1 report and burned it to DVD 4 years ago. I have said that numerous times. Unfortunately this site does not lists individual posts when you do a search so I can’t show all of the times I have told you. It seems you all just prefer to think I don’t know what I am talking about.
I have diagrams that show the locations of all of the toilets and sinks and urinals in the core. But that does not provide data on how the thickness of the horizontal beams in the core changed down the building. That would change the tons of steel on each level.
Did you add the weight of all the tiolets and urinals? And desks, filecabinets, safes, computers, printers, furniture, etc, etc? How much more hundreds of tons of weight existed within the building that wasn’t there when it was built?
IMO, there are just too many unknown variables. The main point is that it happened and there was an identified cause which set the events in motion. You cannot seperate these events and look for the possibility that under normal circumstance individual events could not have happened.
Look at it from a “motive and opportunity” angle. Publicity wise what difference would it have made if only the top 15 floors had come down. Bin Laden wanted to make a point and by his own words the result exceeded his expectations. Even if during the years of planning he had opportunity to place additional explosives, what difference does it make now? He is dead and we have exacted our pound of flesh a ten times over.
Its time to let go and move on.