Laserfiche WebLink
� <br /> 2.5 CONSTRUCTI4N PANELS,GENERAL ' <br /> A. Construction Panel Standards: Comply with PS 1 "U.S.Product Standazd for Construction <br /> and Tndustrial Plywood"forplywood constnzction panels and,for products not manufactured <br /> under PS I provisions,with APA PRP-108. ' <br /> B. Trademark: Furnish construction panels that ate each factory-marked with APA trademark <br /> evidencing compliance with grade requirements. <br /> 1. Exposure Durability Classifica#ion: EXTERIOR. , <br /> 2. Span Rating: As required to suit joist spacing indicated. <br /> C. WaII Sheathing: APA RATED SHEATHING. , <br /> 1. E�osu�e Durability Classification: EXTERIOR. <br /> 2. Spaa Rating: 12/0, 16/0,20/0 or WaJI-16 oc for stud spacing of 16 inches or less. ' <br /> 2.6 AIR INFII.TRATION BARRIER <br /> A. Polyethylene sheet,0.0(161 inch thick,formed by spinning continuous strands of fine high ' <br /> density polyethylene interconnected fibers a�td bonding�em together by heat and pressure; <br /> with a moistuse vapor transmission rate of 40p 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 typa indicated that comply with requirements � <br /> specified in this articla for material and manufacture. <br /> 1. Where rough carpentry is exposed to weather,in ground cantact,or ir�area of high , <br /> relative humidity,pmvide 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 B18.6.1. � <br /> 2.8 METAL FRAMIl�TG ANCHORS , <br /> A. General: Provide metal framing anchors of type,size,metal,and fmish indicat+ed that comply <br /> with requirements specified including the following: <br /> 1. Current Evaluation/Research Raports: Provide products for which model code ' <br /> evaluation/research reports exist that are acceptable to authorities having j urisdiction <br /> and that evidence compliance ofinet$1 framinganchors for application indicatedwith � <br /> the building code in effect for this Project. <br /> 2. AUowable Design Loads: Provide products for which manufacttuer publishes <br /> aliowable design loads that are determined from empiricai data or by rational <br /> engineerittg 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 #o comply with ASTM A 525 for Coating Designation G60 and with <br /> ASTM A 446, Grade A (structural qualifiy); ASTM A 52b (commercial quality); or <br /> ASTM A 527 {lock-forming quality}; as standard with manufacturer for type of anchor <br /> indicated. , <br /> ROUGH CARPENTRY Page 4 of 7 , <br />