Chris Wilson Posted August 26, 2008 Share Posted August 26, 2008 I want to span 22 feet across the length of my garage at home with an RSJ. The supporting walls i am 100% happy with, but I need to specify the size of the RSJ. Worst case scenario is it must be able to lift, on a block and tackle, 580 kilos in the middle of the (end supported only) span without sagging too much. What size RSJ do I need, it'll be supported on the base of the I on the end walls. Thanks. I'd like it as light as possible (minimum excess capacity) to keep the steel cost down. Quote Link to comment Share on other sites More sharing options...
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