There are skyscrapers all over the world except for Antarctica. They must all cope with the same gravity. So shouldn't there be lots of designers who know how to distribute the steel down the structure? Won't the distribution of concrete affect that? Look at the Eiffel Tower.
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Its 10,000 tons of wrought iron doesn't have to support twice its own weight in concrete though.
As you progress down the structure doesn't more and more weight have to be supported? So where are engineers discussing and demanding data on the distributions of steel and concrete down the Twin Towers? The NCSTAR1 report by the NIST does not even specify the total amount of concrete in the towers. They do for the steel but not the distribution.
The Twin Towers Affair has been a scientific farce since 9/12/01. I confronted Richard Gage about the distribution of steel in May of 2008. He looked at me like I had grown a 2nd head. He was doing his dog and pony show at the UofI Circle Campus in Chicago. I got in line after the show.
Try finding data on the distributions of steel and concrete down any skyscraper in the world. What is the big deal? Why should anyone but engineers give a damn but for 9/11?