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MarineMax service
"Brian Whatcott" wrote in message ... On Sat, 26 May 2007 03:22:11 +0000, Larry wrote: Grade School Physics Factoid: A building cannot freefall into its own footprint without skilled demolition. Civil Engineering Graduate School Fact: For a tall building to collapse on its footprint, the central support column should be gravity load bearing and the edge columns should provide the wind resistance structure . Like, oh, the World Trade towers. Gravity overload pulls out the center column fixings, while the edge columns provide precision collapse guidance. How 'bout that! Brian Whatcott Altus OK Not for nothing, but the central support columnS (multiple) were not even touched by the planes. |
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