Laserfiche WebLink
1985 EDITION 251 <br /> E. Gypsum board(sheathing 1/2 inch thick by 4 feet wide,wallboard or veneer <br /> base)on studs spaced not over 24 inches on center and nailed at 7 inches on <br /> center with nails as required by Table No.47-I. <br /> F. Particleboard wall sheathing panels shall be in accordance with Table No. <br /> 25-N-2. <br /> G. Portland cement plaster on studs spaced 16 inches on center installed in <br /> accordance with Table No.47-I. <br /> H. Hardboard panel siding when installed in accordance with Section 2516(g) <br /> 6 and Table No.25-0. <br /> For methods B,C,D,E,F.G and H the braced panel must be at least 48 inches <br /> in width,covering three stud spaces where studs are spaced 16 inches apart and <br /> covering two stud spaces where studs are spaced 24 inches apart. <br /> Solid sheathing of one of the materials specified in Items B through D and Item <br /> F,gypsum wallboard in Item E applied to supports at 16 inches on center,portland <br /> cement plaster in Item G,or hardboard panel siding in Item H,shall be applied to p <br /> the exterior walls of the first story of all wood framed buildings three stories in !" <br /> height.In Seismic Zones Nos.3 and 4 such braced wall sections shall be located at <br /> each end,or as near thereto as possible,and shall comprise at least 40 percent of <br /> the linear length of the wall. <br /> Solid sheathing of one of the materials specified in Items B through D and Item <br /> F,gypsum wallboard in Item E applied to supports at 16 inches on center,portland 1 n <br /> cement plaster in Item G,or hardboard panel siding in Item H,shall be applied on <br /> C either face of the exterior walls of the first story of all wood framed,two-story v <br /> buildings and the second story of three-story buildings located in Seismic Zones <br /> No. 3 and No. 4. Braced wall sections shall be located at each end or as near <br /> thereto as possible and comprise at least 25 percent of the linear length of the wall. <br /> All vertical joints of panel sheathing shall occur over studs.Horizontal joints <br /> shall occur over blocking equal in size to the studding except where waived by the <br /> installation requirements for the specific sheathing materials. <br /> 4.Cripple walls.Foundation cripple walls shall be framed of studs not less in <br /> size than the studding above with a minimum length of 14 inches,or shall be <br /> framed of solid blocking. When exceeding 4 feet in height, such walls shall be <br /> framed of studs having the size required for an additional story. <br /> Such walls having a stud height exceeding 14 inches shall be considered to be <br /> first-story walls for the purpose of determining the bracing required by Section <br /> 2517(g)3.Solid blocking may be used to brace cripple walls having a stud height <br /> of 14 inches or less. i <br /> 5.Headers.Headers and lintels shall conform to the requirements set forth in <br /> this paragraph and together with their supporting systems shall be designed to <br /> support the loads specified in this code.All openings 4 feet wide or less in bearing <br /> walls shall be provided with headers consisting of either two pieces of 2-inch <br /> framing lumber placed on edge and securely fastened together or 4-inch lumber of <br /> equivalent cross section. All openings more than 4 feet wide shall be provided <br /> with headers or lintels.Each end of a lintel or header shall have a length of bearing <br /> of not less than 11/2 inches for the full width of the lintel. <br /> 211 <br /> iy <br />