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Section 2308.3.4 Braced wall line support. Braced wall lines shall be supported by <br />continuous foundations. <br />Exceptions: <br />1. One -story buildings with maximum plan dimension not exceeding 50 feet (15240 <br />mm), may have continuous foundations located at exterior braced wall lines only. <br />2. Two -story buildings with a maximum plan dimension not exceeding 50 feet (15240 <br />mm) may have braced wall lines supported on continuous foundations at the exterior <br />walls only, provided: <br />a. Cripple walls do not exceed 4 feet (1219 mm) in height. <br />b. Where the first story is supported on a raised wood framed floor, the interior <br />braced wall panels are directly supported by either doubled joists, continuous 4x <br />blocking or minimum 4x floor beams. <br />Section 2308.12.4 of the California Building Code, 2010 Edition is amended as follows: <br />2308.12.4 Braced wall line sheathing. Braced wall lines shall be braced by sheathing <br />prescribed by Table 2308.12.4 as shown in Figure 2308.9.3. The sum of lengths of braced <br />wall panels at each braced wall line shall conform to Table 2308.12.4. Braced wall panels <br />shall be distributed along the length of the braced wall line and start at not more than 8 feet <br />(2438 mm) from each end of the braced wall line.. Sheathing shall be minimum of 3/8" thick <br />and be fastened to studs, top and bottom plates and at panel edges occurring over blocking. <br />Wall framing to which sheathing used for bracing is applied shall be nominal 2 inch wide <br />[actual 1 /2 inch (38 mm)] or larger members, spaced a maximum of 16 inches on center. <br />Nailing shall be minimum 8d common placed 3/8 inches from panel edges and spaced not <br />more than 6 inches on center, and 12 inches on center along intermediate framing members. <br />Cripple walls having a stud height exceeding 14 inches (356 mm) shall be considered a story <br />for the purpose of this section and shall be braced as required for braced wall lines in <br />accordance with Table 2308.12.4. Where interior braced wall lines occur without a <br />continuous foundation below, the length of parallel exterior cripple wall bracing shall be one <br />and one -half times the lengths required by Table 2308.12.4. Where the cripple wall sheathing <br />type used is Type S -W and this additional length of bracing cannot be provided, the capacity <br />of Type S -W sheathing shall be increased by reducing the spacing of fasteners along the <br />perimeter of each piece of sheathing to 4 inches (102 mm) o.c. <br />ORDINANCE NO. 2010-013 28 <br />