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Old 03-08-2013, 08:41 PM   #16
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Pressure Treated lumber problems

Check with your local AHJ. You could get by with a foil-faced (PIC) foamboard (possibly XPS, if thick enough) under a regular kiln-dried plate, many locales permit it, #3:

It would act as the air/thermal/capillary break from the earth under the slab. The 2x3's are fine up to 10' tall; "R602.5 Interior nonbearing walls. Interior nonbearing walls shall be permitted to be constructed with 2-inch-by-3-inch (51 mm by 76 mm) studs spaced 24 inches (610 mm) on center or, when not part of a braced wall line, 2-inch-by-4-inch (51 mm by 102 mm) flat studs spaced at 16 inches (406 mm) on center. Interior nonbearing walls shall be capped with at least a single top plate. Interior nonbearing walls shall be fireblocked in accordance with Section R602.8." From IRC;





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2x3 , framing , plate , stud , wall

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