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Switchboard 2025 CBC <br />Wind=1,650 lbs SDC= D Hc =7.6 ft. COG =3.8 ft. <br />EQ*Ω=6,713 lbs Ω= 2.5 Dc =2.4 ft.Wc =3.0 ft. <br />DL =7,500 lbs <br />Load combination used for the design: <br />0.661 DL + 1.0 EQ <br />(0.9-0.2SDS) for EQ load combination <br />0.900 DL + 1.0 WL <br />1 V_EQ =6,713 lbs 1 V_EQ x 0.3=2,014 lbs (orthogonal direction) <br />Wp =0.661 DL <br />=4,960 lbs <br />MOT =V x COG MOT =V x COG <br />=25,452 lb-ft =7,635 lb-ft <br />MR = Wp x 1/2 Dc MR = Wp x 1/2 Wc <br />=5,993 lb-ft =7,440 lb-ft <br />M =MOT - MR M =MOT - MR <br />=19,458 lb-ft =195 lb-ft <br />1 V_WL =1,650 lbs 1 V_WL x 0.3=495 lbs (orthogonal direction) <br />Wp =0.9 DL <br />=6,750 lbs <br />MOT =V x COG MOT =V x COG <br />=6,255 lb-ft =1,877 lb-ft <br />MR = Wp x 1/2 Dc MR = Wp x 1/2 Wc <br />=8,156 lb-ft =10,125 lb-ft <br />M =MOT - MR M =MOT - MR <br />=-1,901 lb-ft =-8,248 lb-ft <br />M_Worst =19,458 lb-ft =195 lb-ft <br />Anchor Bolts for Switchboard <br />Bolt Number =18 <br />T (Tension on Bolt) = (M / Dc) / 9 bolts T (Tension on Bolt) = (M / Wc) / 9 bolts <br />=895 lbs. =7 lbs. <br />V (Shear on Bolt) = V / 18 bolts V (Shear on Bolt) = V / 18 bolts <br />=373 lbs. =112 lbs. <br />V <br />Wp <br />Hc <br />T <br />Dc <br />19