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I know a triangle is the stiffest structure, but....... 3 or 4 or even 6 sides, Has to sway unless all the building is under compression. Long stuff moves. Tall buildings have temperature differences and even at .001% coefficient of expansion at that distance something is going to be measureable. Might not noticeable wind sway.
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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