10-28-2009, 05:08 AM
Hi,
Since the fire was most intense toward the center of the building, the central supports yielded first, forming a sort of funnel that brought the building down almost vertically. Again, nothing surprising or mysterious about it. Yes, it does look somewhat like an intentional demolition. But a demolition of a structure that high would have required multiple levels at which the supports would have been cut, starting at the top center, working out toward the edges and then repeating the process on lower floors. The whole process carefully timed to the shock propagation through the steel structure and the rate of fall of debris from upper floors. Doing it with just a bottom floor set of charges is too dangerous for a building much over ten stories tall. Too much chance that one side will be just a bit stronger and cause the whole upper part to topple sideways.
--Pete
Quote:A lower support member failing catastrophically is going to sound like a bomb went off. Multiple lower supports failing are going to sound like multiple bombs going off.Yes. Not to mention the sound of the horizontal members shearing off from the verticals. And about a million other things breaking, twisting, rupturing, etc. And circuits blowing out with sparks.
Since the fire was most intense toward the center of the building, the central supports yielded first, forming a sort of funnel that brought the building down almost vertically. Again, nothing surprising or mysterious about it. Yes, it does look somewhat like an intentional demolition. But a demolition of a structure that high would have required multiple levels at which the supports would have been cut, starting at the top center, working out toward the edges and then repeating the process on lower floors. The whole process carefully timed to the shock propagation through the steel structure and the rate of fall of debris from upper floors. Doing it with just a bottom floor set of charges is too dangerous for a building much over ten stories tall. Too much chance that one side will be just a bit stronger and cause the whole upper part to topple sideways.
--Pete
How big was the aquarium in Noah's ark?