Green Pine Joist Spans
Hello GBA Brain Trust …
I’m in Rhode Island, planning to build a 1 1/2 story garage-workshop using locally milled full-dimension green pine. For the most part I think I have a handle on how I’m going to do it (platform frame, 2×6 studs @ 16″ o.c.) — although I welcome suggestions. The upstairs loft will eventually be insulated and finished for use as an office. My reasons are aesthetics and cost: local green pine is running well under 1/2 the price of KD of the same nominal dimensions at the big boxes.
A big hole in my research: I cannot get information on floor joist spans. The garage will be built on a slab, but I want a clear 16′ span. KD 2x12s at 16″ o.c. would handle this pretty well, I-joists or trusses would be fine, but what about green? I’m worried about deflection, obviously. The load “upstairs” will not be extreme (household storage, office furniture, books away from the center) but it would be terrible to build this thing then have it sag. A center beam or posts are not desirable as this span is intended to be as open as possible.
Anyone have info on spans for green pine 2×12?
Related: I was thinking of using green pine beams as headers in a few places.
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