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Dong Engineering Inc. <br />ADDITION + ADU <br />5121 W.ROBERTS DR #2, SANTA ANA, CA 92704 <br />Job#: 240056 <br />Date: 11/27/2024 <br />PLAN: 2 <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 />2.75 2.75 <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)=1238 x (10 - 7 + 4 / 2) / 10 = 619 lbs <br />Shear =619 / (10 - 7) = 206 plf <br />Force Below Window (J & K)=1238 x (7 - 4 / 2) / 10 = 619 lbs <br />Shear =619 / (7 - 4) = 206 plf <br />Force on Left pier (E & G)=1238 x (2.75 + 4.5 / 2) / 10 = 619 lbs <br />Shear =619 / 2.75 = 225 plf <br />Force on Right pier (F & H)=1238 x (2.75 + 4.5 / 2) / 10 = 619 lbs <br />Shear =619 / 2.75 = 225 plf <br />Drag force at header =206 x 4.5 / 2 = 463.5 lbs <br />Drag force at window sill =206 x 4.5 / 2 = 463.5 lbs <br />Upper left sub panel shear (A)=(619 - 463.5) / 2.75 = 57 plf <br />Upper right sub panel shear (D)=(619 - 463.5) / 2.75 = 57 plf <br />Lower left sub panel shear (I)=(1238 - 1069) / 3 = 56 plf <br />Lower right sub panel shear (L)=(1238 - 1069) / 3 = 56 plf <br />Maximum sub panel shear =225 plf => USE TYPE A <br />Maximum drag force =464 lbs => USE DRAG (1)CS16 <br />Shear Wall With Opening: Shear Wall # 1 @ P3 & P4 <br />3.00 ft <br />10 <br />. <br />0 <br />0 <br /> <br />f <br />t <br />4.50 <br />1238 lbs <br />745 lbs <br />1238 lbs <br />10.00 ft <br />10.00 ft <br />4.5ft 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 />38 of 44 <br />FLOOD ZONE - 5121 W <br />Roberts Dr & #23/19/2025