I Currently have Old school 2 1/2” x 8” floor joist 16”oc spanning 13’6” and also have 2×8 Doug fir Spanning 11’6”, also has 1×4 nailed on subfloor.  I am currently… I Currently have Old school 2 1/2” x 8” floor joist 16”oc spanning 13’6” and also have 2×8 Doug fir Spanning 11’6”, also has 1×4 nailed on subfloor.  I am currently…Read MoreGreenBuildingAdvisor

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