Shifting the load to the outside will help by reducing the bending moment in the joists, but even better is to remove the load. Too many years since I did beam calcs, but there is a BSME lurking in my history. It's in the middle because that's what seemed the easiest way to get it into the joists, and the added weight didn't seem like an issue before this. I'm also considering moving the load away from the middle of the span to the outside. Is this valid, or should I be considering doubling up the 2圆 joists by sistering another 2圆 to each of them? So I appear to be under the load limit for the span. My understanding is you can figure about 40-50 lbs per square foot, which would be about 3,500# in this case. The load spans a space about 8'x9', or about 72 sq feet, over 5 joists. Total weight is probably about 1,500#, assuming a weight of 3.8#/bf for the hard maple. I have just put about 370 bf of hard maple up there, along with another 400-500# of 2x12 southern yellow pine. Walls are standard 2x4 16" oc, with a double top plate, single bottom plate. The roof is metal, so it's lighter than shingles. The joists are open, so there is no load from drywall or otherwise. Maximum floor span o.c.So I have a workshop that consists of a long double garage, 22'x40'. Live load: 40 psf / Dead Load: 36 psf / Depth: 11 7/8″ – Span table Live load Live load: 40 psf / Dead Load: 15 psf / Depth: 16″ – Span table Live load ![]() Live load: 40 psf / Dead Load: 15 psf / Depth: 14″ – Span table Live load Live load: 40 psf / Dead Load: 15 psf / Depth: 11 7/8″ – Span table Live load Live load: 100 psf / Dead Load: 15 psf / Depth: 16″ – span table.Live load: 100 psf / Dead Load: 15 psf / Depth: 14″ – span table.Live load: 100 psf / Dead Load: 15 psf / Depth: 11 7/8″ – span table.Live load: 40 psf / Dead Load: 36 psf / Depth: 16″ – span table.Live load: 40 psf / Dead Load: 36 psf / Depth: 14″ – span table.Live load: 40 psf / Dead Load: 36 psf / Depth: 11 7/8″ – span table.Live load: 40 psf / Dead Load: 15 psf / Depth: 16″ – span table.Live load: 40 psf / Dead Load: 15 psf / Depth: 14″ – span table.Live load: 40 psf / Dead Load: 15 psf / Depth: 11 7/8″ – span table.ΔL ≤ L/360 Span tables menu (Canadian Edition): Glued & Nailed Subfloor with strongbacks / ceiling optional Maximum Allowable Spans – Canadian Edition Please contact your representative to determine quantities. Refer to appropriate sections of the Specifier Guide for installation guidelines and construction details.The subfloor must be glued as per APA Specification AFG-01 or ASTM D3498 and nailed as per NDS, ICC IBC/IRC code. and is a “24 oc APA rated panel” for joist’s spacing of 24″ o.c. ![]()
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