That beam isn't holding any roof load at all. Its holding the celing joists like WAR noted. First off a double 2x10 beam isnt much at all so the load isnt that great regardless of span. What is the total span of the double 2x10 beam ? The live load in clg joists arent as much as a live load in a floor joist. The clg joist dead load may not even be a factor either due to the small overall span. A beam only takes half the span. the other half is supported on the exterior walls. You can definetly get away with creating a "flitch plate" beam and eliminate the column all together. A flitch plate is the combination of conventional wooden lumber and steel plate sandwiched and thru bolted together. The splice joists overlap creating a solid beam mass. PM me ALL the dimensions of the garage including the overall span of the beam and clg joists above and the directions of each. I'll run a calculation and provide you with what size steel plate and how many additional 2x10 joists you'll need.
I have an architectural degree and its my day job if it helps reassure you... LOL.
Last edited by HRBS; 05-26-2010 at 08:32 PM.
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