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2x4 <br />3x4 <br />2x6 <br />10' <br />Allowable <br />span Size <br />24" <br />24" <br />24" <br />10' <br />10' <br />24" 16" <br />24" <br />24" <br /> - <br />16" <br />16" <br />2x4 <br />2x6 <br />7'-0" <br />24" <br />24" <br />24" <br />This table is used to determine span for roof rafters, U.N.O. <br />Based on California Residential Code 2022 , Table R802.4.1(2) <br />This table is used to determine size, height and spacing of wood studs, U.N.O. <br />Based on California Residential Code 2022 , Table R602.3(5) <br />Maximum <br />spacingOne floor only <br />Stud <br />size <br />Stud <br />height <br />Stud <br />height <br />Non-bearing wallBearing walls <br />Maximum spacing when supporting <br />Roof and ceiling <br />only <br />One floor, roof <br />and ceiling <br />Two floors, roof <br />and ceiling <br />14' <br />14' <br />20' <br />24" <br />24" <br />12" <br />24" 24" 18'-6" <br />2x10 <br />2x12 <br />24" 15'-11" <br />16" <br />12" <br />Size Spacing <br />A. Dead Load = 20 psf <br />B. Live Load = 20 psf <br />C. Total Deflection = L/240 <br />16" 22'-7" <br />12" 26'-0"14'-7" <br />16" 19'-6" <br />12" 22'-6" <br />D. Use Douglas Fir Larch #2 <br />8'-7" <br />9'-10" <br />10'-4" <br />12'-7" <br />Spacing Allowable <br />span <br />24" <br />16" <br />B. Live Load = 10 psf <br />Spacing Allowable <br />span <br />C. Total Deflection = L/240 <br />16" 23'-4"D. Use Douglas Fir Larch #2 <br />2x10 <br />24" <br />16" <br />12" <br />23'-3" <br />exceeds 26' <br />exceeds 26' <br />24" <br />16" <br />12" <br />9'-10" <br />11'-3" <br />12'-5" <br />24"exceeds 26' <br />12"exceeds 26' <br />Size Spacing Allowable <br />span Size <br />2x6 <br />24" 15'-0" <br />2x12 <br />12" 19'-6" <br />2x4 <br />16" 17'-8" <br />2x8 <br />24" 19'-1" <br />12" 25'-8" <br />16"exceeds 26'A. Dead Load = 5 psf <br />This table is used to determine span for floor joists, U.N.O. <br />Based on California Residential Code 2022 , Table R502.3.1(2) <br />Size Spacing Allowable <br />span Size Spacing Allowable <br />span <br />A. Dead Load = 20 psf <br />12" 10'-8" 12" 16'-5" B. Live Load = 40 psf <br />2x6 <br />24" 7'-6" <br />2x10 <br />24" 11'-8" <br />16" 9'-3" 16" 14'-3" <br />C. Total Deflection = L/360 <br />16" 11'-8" 16" 16'-6" D. Use Douglas Fir Larch #22x8 <br />24" 9'-6" <br />2x12 <br />24" 13'-6" <br />12" 13'-6"11 12" 19'-1" <br />2x8 <br />24" 13'-0" <br />16" 16'-0" <br />12" 18'-5" <br />This table is used to determine span for ceiling joists, U.N.O. <br />Based on California Residential Code 2022 , Table R802.5.1(1) <br />1506 E Clemensen Ave & <br />#212/12/2024