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 01-04-2009, 09:49 Post: 159048
hardwood

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 World s longest rafter

A couple nights ago I watched something about colossal building type stuff on the Science Channel. The world's longest self supporting rafter is 475 ft. long, it's holding up the roof on a new convention center somewhere in South Korea. It was welded up from steel components on site and built in place. The bottom stretcher is in the concrete floor, and the ends of the rafter connect to it under the floor. And I thought 90 footers were long. Frank.






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 01-04-2009, 19:15 Post: 159068
hardwood

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 World s longest rafter

Maybe someone else who saw the same program can help me a bit here. The original design was updated by another engeneering firm who removed several thousand puonds of steel reenforcment plates at the welded joints of the rafter. Their contention was that the plates didn't add enough strength to compensate for their own weight. Anybody wanna sit under this deal during a windstorm?






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