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Dong Engineering Inc. <br />ADU <br />3414 S_TIMBER ST, SANTA ANA, CA 92707 <br />Job#: 250421 <br />Date: 9/17/2025 <br />PLAN: 1 <br />CODE: CBC 2022 <br />Wind = <br />Seismic = <br />A B C D <br />E F <br />G H <br />I J K L <br />4.00 4.00 <br />Design Force = <br />Wall Height = <br />Wall Length = <br />Window size = <br />Bottom header = <br />Top of window sill = <br />Force Above Window (B & C)=701 x (8 - 7 + 4 / 2) / 12 = 175 lbs <br />Shear =175 / (8 - 7) = 175 plf <br />Force Below Window (J & K)=701 x (7 - 4 / 2) / 12 = 292 lbs <br />Shear =292 / (7 - 4) = 97 plf <br />Force on Left pier (E & G)=701 x (4 + 4 / 2) / 12 = 350 lbs <br />Shear =350 / 4 = 88 plf <br />Force on Right pier (F & H)=701 x (4 + 4 / 2) / 12 = 350 lbs <br />Shear =350 / 4 = 88 plf <br />Drag force at header =175 x 4 / 2 = 350 lbs <br />Drag force at window sill =97 x 4 / 2 = 194 lbs <br />Upper left sub panel shear (A)=(350 - 350) / 4 = 0 plf <br />Upper right sub panel shear (D)=(350 - 350) / 4 = 0 plf <br />Lower left sub panel shear (I)=(467 - 350) / 3 = 39 plf <br />Lower right sub panel shear (L)=(467 - 350) / 3 = 39 plf <br />Maximum sub panel shear =175 plf => USE TYPE A <br />Maximum drag force =350 lbs => USE DRAG (1)CS16 <br />Shear Wall With Opening: Shear Wall # A @ P1 & P2 <br />3.00 ft <br />8. <br />0 <br />0 <br /> <br />f <br />t <br />4.00 <br />901 lbs <br />701 lbs <br />701 lbs <br />8.00 ft <br />12.00 ft <br />4ft x 4ft <br />7.00 ft <br />Shear wall design concept is chosen as Force-Transfer Around Openings (FTAO) (Sec. 4.3.2.2 ). <br />16 of 32