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SHEET: 8 OF 8 <br />DATE: <br />DE JOB NO.: <br />BATTERY ATTACHMENT CHECK HORIZONTAL AND LATERAL LOADS <br />287 lb <br />TESLA POWERWALL 3 Weight = 287 lb 1.5 ft <br />Number of screws 4 <br />Shear acting on all screws = 287lb/ 71.75 lb, minimal, OK <br />Withdrawal acting on 2 screws due to eccentric load = <br />eccentricity = 6.1"/2 3.05 in <br />Eccentric Moment = 72.946 ft-lb <br />Distance between brackets = 1.5 ft <br />Total load distributed between 2 screws at the top bracket = 48.6 lb <br />Load per screw = 24.3 lb <br />Check 1/4" or M6 screws <br />For 1/4" Lag into .5G wood 200 lb <br />1/4" Lag with min 2" penetration for each attachment <br />Capacity per screw 500 lb <br />Z' = Z*CD =170*1 lb > 170 lb OK <br />Interaction Equation ft/Ft+fv/Fv 0.0486 + 0.42206 = 0.4707 < 1 OK <br />BY: Doug Engineering GUC-3004 <br />PROJECT: PV Panels for Robert Dominguez <br />CLIENT: Guyou Construction, Inc. 11/26/2024 <br />1422 W Marion <br />Way1/24/2025