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2007 SUPPLEMENT TO THE IRC TABLE R60210.3.2.1 MINIMUM LENGTH REQUIREMENTS AND T1E-DOWN FORCES FOR ALTERNATE BRACED WALL PANELS SEISMIC DESIGN CATEGORY AND WIND SPEED SDC A, B and C Wind speed < 110 mph SDC Do, 01 and 02 Wind speed < 110 mph Minimum Sheathed Length R602,10.3.2.1, Item 1 Tie - down Force (lbs) R602.10.3.2.1, Item 2 Tie - down Force (lbs) Minimum Sheathed Length R602.10.3.2.1, Item 1 Tie - down Force (lbs) R602.10.3.2.1, Item 2 Tie -down Force (lbs) HEIGHT OF BRACED WALL PANEL 8 ft. 2'-4" 1800 3000 2'-8" 1800 3000 For SI: 1 inch = 25.4 mm, 1 foot = 305 mm, 1 pound = 4.44822 Newtons a. NP = Not Permitted. Maximum height of 10 feet (3,048 mm). 9 ft. 2'-8" 1800 3000 2'-8" 1800 3000 10 ft. 2'-10" 1800 3000 2'-10" 1800 3000 11 ft. 3'-2" 2000 3300 NPa NPa NPa 12 ft. 3'-6" 2200 3600 NPa NPa NPa R602.10.3.2.2 Alternate bracing wall panel adjacent to a door or window opening. Alternate braced wall panels constructed in accordance with one of the following provisions are also permitted to replace each 4 feet (1219 mm) of braced wall panel as required by Section R602.10.3 for use adjacent to a window or door opening with a full-length header: 1. In one-story buildings, each panel shall have a length of not less than 16 inches (406 mm) and a height of not more than 10 feet (3048 mm), Each panel shall be sheathed on one face with a single layer of 3/8 -inch - minimum -thickness (9.5 mm) wood structural panel sheathing nailed with 8d common or galvanized box nails in accordance with Figure R602.10„3,2.2. The wood structural panel sheathing shall extend up over the solid sawn or glued -laminated header and shall be nailed in accordance with Figure R602.10.3.2.2, A built-up header consisting of at least two 2 X 12s and fastened in accordance with Table R602.3(1) shall be permitted to be used. A spacer, if used, shall be placed on the side of the built-up beam opposite the wood structural panel sheathing. The header shall extend between the inside faces of the first full-length outer studs of each panel. The clear span of the header between the inner studs of each panel shall be not less than 6 feet (1829 mm) and not more than 18 feet (5486 mm) in length. A strap with an uplift capacity of not less than 1000 pounds (4448 N) shall fasten the header to the side of the inner studs opposite the sheathing. One anchor bolt not less than 518 -inch -diameter (16 mm) and installed in accordance with Section R403.1.6 shall be provided in the center of each sill plate. The studs at each end of the panel shall have a tie -down device fastened to the foundation with an uplift capacity of not less than 4,200 pounds (18 683 N). The tie -down devices shall be an embedded -strap type, installed in accordance with the manufacturer's recommendations. Where a panel is located on one side of the opening, the header shall extend between the inside face of the first full-length stud of the panel and the bearing studs at the other end of the opening. A strap with an uplift capacity of not less than 1,000 pounds (4448 N) shall fasten the header to the bearing studs. The bearing studs shall also have a tie -down device fastened to the foundation with an uplift capacity of not less than 1,000 pounds (4448 N). The panels shall be supported directly on a foundation, which is continuous across the entire length of the braced wall line. The foundation shall be reinforced with not Tess than one No. 4 bar top and bottom, Where the continuous foundation is required to have a depth greater than 12 inches (305 mm), a minimum 12 -inch -by -12 -inch (305 mm by 305 mm) continuous footing or turned down slab edge is permitted at door openings in the braced wall line. This continuous footing or turned down slab edge shall be reinforced with not less than one No. 4 bar top and bottom. This reinforcement shall be lapped not less than 15 inches (381 mm) with the reinforcement required in the continuous foundation located directly under the braced wall line. 2. In the first story of two-story buildings, each wall panel shall be braced in accordance with item 1 above, except that each panel shall have a length of not less than 24 inches (610 mm). uuilcm� coprrighNr C CCi 7 OCC QAILN..RICKS RE'SIERWEIC;p, boonsma aro NMI 1E64 -Awn porsualmi Lpcolnvo Agimerornt AM0IICC. No Nan& rolplroauwcmlcana Na gRonrrzed or IrGusGONauutioon sIlnnolzod AIP0( UNALV'll"HR NZEID IRIEIPRODLIICTIIQ;AN CR DIIS'TROEA.VII'DON IIS A VIUCNATIION OE THE FEDERAL COPYRIGHT ACT AND THIS LICENSE AGREEMENT' AND Efl„VaJE'CTT'C CAA L AND CIRIIIM':+I TAIL PENALTIES III- RIEON'NCS .1