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' <br /> 2.5 CONSTRUCTION PANELS,GENERAL , <br /> A. Construction Panel Standards: Comgly with PS I "U.S.Product Standazd for Construction <br /> and Industrial Piywood"for plywood constri�ction panels and,for products not manufactured <br /> under PS I provisions,with APA PRP-108. ' <br /> B. Trademark: Furnish construction panels that are each factory-marked with APA trademark <br /> evidencing compliance with grade requirements. ' <br /> 1. Exposure Durability Classification: EXTERIOR. <br /> 2. Span Rating: As required to suit joist spacing indicated. <br /> C, Wall Sheathing: APA RATED SHEATHING. ' <br /> 1. Exposure Durability Classification: EXTERIOR. � ' <br /> 2. Spaa Rating: 12/0, 16/Q,20/0 or Wall-16 oc for stud spacing of 16 inches or less. <br /> 2.6 AIR INFII.TItATION BARRIER <br /> A. Poiyethylene sheet,0.0061 inch thick,formed by spinning continaous strands of fine high ' <br /> density polyethylene interconnected fibers and bonding them together by heat and pressure; <br /> with a moisture vapor transmission rate of 400 grams/sq. meter/24 hrs, per ASTM E 96, <br /> procedure B;flame spread and smoke developed ratings of 5 and 10 per ASTM E 84. ' <br /> 2.'7 FASTENERS <br /> A. General: Provide fasteners of size and type indicated that comply with requirements ' <br /> specified in this articla for material and manufactur8. <br /> 1. Where rough carpentry is exposed to weather, 'vn ground contac�or in area of high ' <br /> relative humidity,provide fasteners with a hot-dip zinc coating per ASTM A 153 or <br /> of AISI Type 304 stainless steel. <br /> B. Nails,Wire,Brads, and Staples: FS FF-N-105. ' <br /> C. Power Driven Fasteners: National Evaluation Report NER-272. <br /> D. Wood Screws: ANSI B 1.8.6.1. ' <br /> 2.8 METAL FRAMIl�IG ANCHORS , <br /> A. General: Provide metal framing anchors of type,size,metal,and fuush indicated that comply <br /> with requirements specified including the following: <br /> 1. Current Evaluation/Research Reports: Provide products for which madeI code ' <br /> evaluation/research reports exist that are acceptable to authorities having j urisdiction <br /> and that evidence compliance of inetal frarning anchors for application indicated with , <br /> the building code in effect for this Projeat. <br /> 2. Allowable Design Loads: Provide products for which manufacturer publishes <br /> allowable design loads that are determined from empiricai data or by rational <br /> angineering analysis and that are demonstrated by comprehensive testing performed ' <br /> by a qualified independent testing laboratory. <br /> B. Galvanized Steel Sheet: Steel sheet zinc-coated by hot dip process on continuous lines prior ' <br /> to fabrication to comply with ASTM A 525 for Coatin� Designation G60 and with <br /> ASTM A 446, Grade A (structural qualifiy); ASTh�i A 52b (commercial quality); or <br /> ASTM A S27 (lock-forming quality}; as standard with manufacturer for type of anchor <br /> indicated. ' <br /> ROUGH CARPENTRY Page 4 of 7 ' <br />