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Beam and column size
Last Post 08 Oct 2014 10:28 AM by Matt Burke. 0 Replies.
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Matt Burke
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08 Oct 2014 10:28 AM
    I'm planning on building a 12' x 40' balcony or mezzanine in a commercial building. It needs to be rated at 100 psf. My plan is to bolt a double 2x12 to the exterior wall 40' across the back and 12' on the right side also supported by 6x6 wood post every 10'. A 12x26 steel I-beam across the front supported by steel columns on each ens and one in the middle. So my beam would span 20' from the center column to the outside columns. I would bolt double 2 x 12's to the web of the i-beam to support joist hangers for 2 x 12 joist on 12" centers. 1 1/4" tongue and groove plywood to finish. My questions: Would the 12x26 beam be sufficient to span 20' and what column size will I need to support the load?
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