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KNAPP RESIDENCE OUTLINE SPECIFICATIONS <br /> SECTION 06100 - ROUGH CARPENTRY <br /> A. PROJECT INCLUDES <br /> 1 . Rough Carpentry: <br /> a . Framing with dimension lumber. <br /> b. Framing with engineered wood products . <br /> c . Wood grounds, nailers , and blocking. <br /> d. Wood furring. <br /> e . Sheathing . <br /> f . Subflooring. <br /> g . Underlayment . <br /> h. Air infiltration barrier. <br /> B. QUALITY STANDARDS <br /> 1. Lumber Standards and Grade Stamps : PS 20 , American Softwood <br /> Lumber Standard and inspection agency grade stamps . <br /> 2 . General Notes : See sheet S5 for additional information <br /> pertaining to this section. <br /> 3 . Construction Panel Standards : PS 1, U. S . Product Standard <br /> for Construction and zndustrial Plywood; APA PRP-108 . <br /> 4 . wood Framing Standards : NFPA House Framing Manual . <br /> a . Exterior Wall Framing : 2 inch by 6 inch nominal studs, <br /> 16 inches on center. <br /> b. Interior Wall Framing: 2 inch by 4 inch nominal studs, <br /> 16 inches on center, unless noted otherwise. <br /> 5 . Preservative Treatment : AWPA C2 for lumber and AWPA C9 for <br /> plywood; waterborne pressure treatment . <br /> 6 . Fire-Retardant Treatment : AWPA C20 for lumber and AWPA C27 <br /> for plywood; noncorrosive type. <br /> C . PRODUCTS <br /> 1 . Dimension Lumber: <br /> a . Light Framing: Stud, No. 2 or better douglas fir . <br /> b. Structural Framing: Select structural No. 2 grade <br /> douglas fir. <br /> c . Species : Any species of grade indicated. <br /> 2 . Timbers : <br /> a . Species and Grade: WCLIB/WWPA select structural douglas <br /> fir . <br /> DIVISION 6 - WOOD AND PLASTICS PAGE 6-1 <br />