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ICC Chapt. 23WOOD corners and at intersections with other walls and parri- tions. The plate shall be continuously Cied at joints by solid blocking at least 16 inches (406 mtn) in length and equal in size to the plate or by'/Z inch by 1'/Z inch (12.7 mm by 38 mm) metal ties with spliced sections fastened with two 16d nails on each side of the joint. 2308.9.2.4 Plates or sills. Studs shat] have full bearing on a plate or sill not less than 2 inches (51 mm) in thick- ness having a width not less than that of the wall studs. 2308.9.3 Bracing. Braced wall lines shall consist of braced wall panels that meetthe requirements for location, type and amount of bracing as shown in Figure 2308.93, specified in Table 2308.9.3(1) and are in line or offset fiom each other by not more than 4 feet (1219 mm). Braced wall panels shall state not more than 12'/z feet (3870 mm) from each end of a braced wall line. Braced wall panels shall be clearly indi- cated on the plans. Construction of braced wall panels shall be by one of the following methods: 1. Nominal 1-inch by 4-inch (25 mm by 102 mm) con- tinuousdiagonal braces let into top and bottom plates attd intervening studs, placed at an angle not more than 60 degrees (1.0 rad) or less than 45 degrees (0.79 rad) from the horizontal and attached Co theframing in conformance with Table 2304.9.1. 2. Wood boards of s/$ inch (15.9 mm) net minimum thickness applied diagonally on studs spaced not over 24 inches (610 mtn) o.c. I 3. Wood structural panel sheathing with a thickness not ~ -~~ less than 3/s inch (9.5 nmp for 16-inch (406 mm) or ~ 24-inch (610 trun) stud spacing in accordance with Tables 2308.9.3(2) and 2308.9.3(3). 4. Fiberboard sheathing panels not less Phan '/i inch (12.7 mm) thick applied vertically or horizontally on studs spaced not over 16 inches (406 rnm) o.c. where installed with fasteners in accordance with Section 2306.6 and Table 2306.6. 5. Gypswn board [sheathing '/Z inch-thick (12.7 nun) by 4-feet-wide (1219 mm) wallboard or veneer base] on studs spaced not over 24 inches (610 mm) o.c. and nailed at 7 inches (178 tmn) o.c. with nails as required by Table 2306.7. 6. Paz'ticleboard wall sheathing panels where installed in accordance with Table 2308.9.3(4). 7. Portland cement plaster on studs spaced 16 inches (406 mm) o.c. installed in accordance with Section 2510. 8. Hazdboard panel siding where installed in accordance with Section 2303.1.6 and Table 2308.9.3(5). For cripple wall bracing, see Section 2308.9.4.1. Por Methods 2, 3, 4, 6, 7 and 8, each panel must be at least 48 inches (]219 nun) in length, covering three stud spaces where studs are spaced 16 inches (406 mm) apart and cover- ing two stud spaces where studs are spaced 24 inches (610 mm) apart. For Method 5, each panel mustbe at least96 inches (2438 mm) in length where applied to one face of a panel and 48 inches (1219 mm) where applied to both faces. All vertical joints of panel sheathing shall occur oversruds and adjacent panel joints shall be nailed to common framing members. Horizontaljointsshatl occur over blocking or other framing equal in size to the studding except where waived by the installation requirements for the specific sheathing materi- als. Sole plates shall be nailed to the floor ft'aming and top plates shall be connected to the framing abovein accordance with Section 2308.3.2. Where joists are perpendicular to braced wall lines above, blocking shall be provided under and in line with the braced wall panels ~ ~7 2308.9.3.1 Alternative bracing. Any bracing required by Section 2308.9.3 is permitted to be replaced by the following: I. In one-story buildings, each panel shall have a length of not less than 2 feet 8 inches (813 mm) and a height of not more than 10 feet (3048 mm). Each pane] shall be sheathed on one face with '/8-inch-minimum-thickness (9.5 mm) wood sttvc- turalpanel sheathing nailed with 8d common or gal- vanized box nails in accordance with Table 2304.9.1 and blocked at wood structural pane] edges. Two anchor bolts installed in accordance with Section 2308.6 shall be provided in each panel. Anchor bolts shall be placed at each panel outside quarter points. Each panel end smd shall have a tie-down device fastened to the foundation, capable of providing an approved uplift capacity of not less than 1,800 pounds (8006 N). The tie-down device shall be installed in accordance with the manufac- turer's recommendations. The panels shall be sup- porteddirectly on a foundation or on floor framing supported directly on a foundation that is continu- ous across the entire length of the braced wall line. This foundation shall be reinforced with not less 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 tnm by 305 mtn) continuous footing or turned down slab edge is permitted aC 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 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 pane] shall be braced in accordance with Section 2308.9.3.1, Item 1, except that the wood structural panel sheathing shall be provided on both faces, three anchor bolts shall be placed at one-quarter points, artd tie-down device uplift capacity shall not be less than 3,000 pomtds (13 344 N). 484 2009 INTERNATIONAL BUILDING CODE° WOOD .~ 2308.9.3.2 Alternate bracing wall panel adjacent to a door or window opening. Any bracing required by Sec- tion 2308.9.3 is permitted to be replaced by the following when used adjacent to a door or window opening with a full-length header: 1. ht 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 he shoathed on one face with a single layer of '/$ inch (9.5 mm) mininmm thickness wood structural panel sheathing nailed with 8d common a' galvanized box nails in accordance with Figure 2308.9.3.2. The wood struchu'al panel sheathing shall extend up over the solid sawn or glued-laminated header and shall be nailed in accordance with Figure 2308.9.3.2. Abuilt-up header consisting oP at least two 2 x 12s and fas- tened in accordance with Item 24 of Table 2304.9.1 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 sheath- ing. 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 mnT) and not more than 18 feet (5486 tmn) in length. A strap with an uplift capacity of not less than 1,000 pounds (4,400 N) shall fasten the header to the inner studs opposite the sheath- ing. One anchor bolt not less than 5/3 inch (15.9 mm) diameter and installed in accordance with Section 2308.6 shall be provided in the center of each sill plate. The studs at each end of the panel shall have atie-down device fastened to the foun- dationwith anuplift capacity of not less Chan 4,200 pounds (18 480 N). Where a panel is located on one side of the open- ing, the header shall extend between the inside face of the fi3st full-length stud of the panel and the bear- ing studs at the other' end of the opening. A strap with an upliftcapacity of notless than 1,000 pounds (4400 N) shall fasten the header to the bearing studs. The bearing studs shall also have atie-down device fastened Co the foundation with an uplift capacity of not less than 1,000 pounds (4400 N). The tie-down devices shall be an embedded strap type, installed in accordance with the manu- facturer's recommendations. The panels shall be supported directly on a foundation that is continu- ousacross the entire length of the braced wall line. This foundation shall be reinforced with not less than one No. 4 bar top and bottom. Where the contiuuous foundation is required to have a depth greater than 12 inches (305 mm), a minimum 12-inch by 12-inch (305 mm by 305 _ EXTENT OF HEADER __ ___-. DOUBLE PORTAL FRAME (TWO DRACED WALL PANELS) EXTENT OF HEADER ___,,J SINGLE PORTAL FflAME(ONE BRACED WALL PANEL) - IL.~~, MIN. 3" X 11.25' NET HEADER ~ \ t~ FASTEN TOP PLATE TO HEADER WITH TWO TYPICAL PORTAL ROWS OF i6D SWKER NAILS AT 3"O.C. TYP 1000 LB i~ FRAME STRAP T CONSTRUCTION 1000 LB STRAP OPPOSITE SHEATHING FASTEN SHEATHING TO HEADER WITH BD COMMON OH GALVANIZED BOX NAILS IN 3' GRID PATTERN AS SHOWN AND MAX' 3'O.C. IN ALL FRAMING (STUDS. BLOCKING, AND SILLS)TYP. HEIGHT .i. 10' L: .,. MIN. WIDTH =16° FOR ONE STORY STRUCTURES MIN. WIDTH = 24" FOR USE IN THE FIRST OF TWO STORY STRUCTURES MIN. 2x4 FRAMING MIN. 316" MIN. THICKNESS WOOD DOUBLE STRUCTURAL PANEL SHEATHING 2x4 POST MIN. 4200 LB TIE~DOWN DEVICE (EMBEDDED INTO CONCRETE AND NAILED INTO FRAMING) SEE SECTION 2306.9.3.2 Por SI: I Coot = 304.8 nun; Cinch = 25.4 nvn; t pound = 4.448 N. FORAPANEL SPLICE (IF NEEDED), PANEL EDGES SHALL BE BLOCKED, AND OCCUR WITHIN 24" OF MID IiEiGHT. ONE ROW OF TYP. SHEATHING~TO~ FRAMING NAILING IS REQUIRED. IF 2X4 BLOCKING IS USED, THE 2X4'8 MUST BE NAILED TOGETHER WITH 316D SINKERS MIN. 1000 LB TIE DOWN DEVICE FIGURE 2308.9.3.2 ALTERNATE BRACED WALL PANEL ADJACENT TO A DOOR OR WINDOW OPENING qgg 2009 INTERNATIONAL BUILDING CODE®