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� <br /> 1. Install continuous horizontal bIocking row at rnid-height of singte-story partitions <br /> ' over 8 feet higl� using 2-inch thick members of same width as wall or partitions. <br /> C. Frame openings with multiple studs and headers. Install nailed header members ofthiclrness <br /> ' equal to width of studs. Set headers on edge and support on jamb studs. <br /> 1. For nonbearing partitions, install double jamb studs and headers not less than 4 <br /> inches deep for openings 3 feet and less in width,and not less than 6 inches deep for <br /> ' wider openings. <br /> 2. For load-bearing partitions,install double jamb studs for openings 6 feet and less in <br /> width,and tripl�jamb studs for wider openings. Instal!headers of depth shown,or <br /> ' if not shown,as recommended by N.F.P.A. "Manual for House Framing." <br /> D. Install diagonaI bracing in stud framing of exterior walls, except as otherwise indicated. <br /> Brace both walls at each external corner,fuil story height,at a 45 degree angie,using either <br /> ' a let-in 1 by 4 or 2 by 4 blocking or metal diagona!bracing. Omit hracing where following <br /> iypes of sheatfiing are indicated. <br /> , 1. Piywaod sheathing or corner bracin�4-feet-wide panels vertically. <br /> E. Ceiling Joists: Install ceiling joists with crovm up and to coznply with requirements specified <br /> above for floor joists. Face nail to ends of parallel rafters <br /> ' 1. Where principal ceiling jois�s are at right angles to rafters,frame as indicated with <br /> aciditionaI short joists from wall plate to first joist;nail to ends of rafters and to top <br /> ' plate and nail to long joists or anchor witti framing anchors or metal straps. Install <br /> 1 by 8 or 2 by 4 siringers spaced 4 feet o.c.crosswise over grincipaI ceiling joists. <br /> F. Install collar beams(ties)as shown,or ifnot shown,instail I-inch by 6-inch boards between <br /> , every third pair of rafters. <br /> G. Install special framing as shown for eaves,overhangs,dormers and similar conditions,if any. <br /> ' H. Where built-up beams or girders of nominal 2-inch dzmension lumber on edge are shown, <br /> fasten together with 2 rows of 20d naits spaced not less than 32 inches o.c. Locate one row <br /> near top edge and other near bottom edge. Locate end joints in members over supports;for <br /> , continuous members,stagger ends at quarter points between supports. <br /> I. InstalI wood posts using metal anchoring and attachnnent devices indicated. <br /> ' J. Seal ends of beams and posts exposed to weather with a water-repellent preservative. <br /> 3.8 AIR IlVFILTRATION BA,RRIER <br /> , A. Cover sheathing with air infiItration barrier as follows: <br /> ' I. Apply plastic sheet to comply with manufacturer's printed directions. <br /> END OF SECTION 06100 <br /> ' <br /> , <br /> , <br /> ROUGH CARPENTRY Page 7 of 7 <br /> � <br />