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Can someone direct me to the appropriate UBC Table? I am trying to determine header size requirements for an L shaped addition to our house. Wall framing is 2 X 6, with Cathedral ceiling, I joist rafters- 18′ horizontal span, 4/12 pitch. Ridge beam 5″ X 16″ run length 17′. The ridge beam will end in exterior end wall over a sliding glass door. Most tables only list double header loads, how about a triple header? Thanks.
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Replies
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When I needed a similar information, the supplier connected me to the manufacturer of laminated beams who faxed over such information specific to my needs. This information was sufficient for the permit.
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Can someone direct me to the appropriate UBC Table? I am trying to determine header size requirements for an L shaped addition to our house. Wall framing is 2 X 6, with Cathedral ceiling, I joist rafters- 18' horizontal span, 4/12 pitch. Ridge beam 5" X 16" run length 17'. The ridge beam will end in exterior end wall over a sliding glass door. Most tables only list double header loads, how about a triple header? Thanks.
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If you have info for 2 ply header loads, why not just increase the capacity by 50% ? A 3 ply header should carry 1.5 times the load of a 2 ply header of the same material.
BTW, this doesn't mean you can span 50% further - If you double the length of a header, the bending stress on the header is 4 times as much.