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19011 Wood-Sno Road NTE,Suite 100 <br /> WoodunvMe,WA 98072-4436 <br /> Phone:425-814-8448 <br /> E N GI N E E RIYi 0 Fax:425-821-2120 <br /> Pacific Ridge Homes Revision Date: 1/11/2021 <br /> Thelon ,Elevations A & B� <br /> Redundancy, p 1.0 (Section 12.3.4) <br /> Design Base Shear <br /> SMs = F.Ss (Eq. 11.4-1) SMi = F,,S, (Eq. 11.4-2) <br /> = 1.60 = 0.90 <br /> S DS = %S Ms (Eq. 11.4-3) S D 1 _ %S M 1 (Eq. 11.4-4) <br /> = 1.20 = 0.60 <br /> Seismic Design Category: Structure Period and Weight'_ <br /> Short Period— D <br /> 1-Second Period— D Ct= 0.020 Table 12.8-2 <br /> x = 0.75 <br /> Building Height(Mean Roof),ht, = 24 ft <br /> Approximate Fundamental Period, Te = Ct (h„)" (Eq. 12.8-7) <br /> T= Ta = 0.22 <br /> TL = 6 (Figs. 22-14 thru 22-17) <br /> Calculated design base shear <br /> V= Cs W (Eq. 12.8-1) <br /> SDS <br /> CS = (R� (Eq. 12.8-2) <br /> le <br /> CS = 0.18 <br /> The total design base shear need not exceed <br /> (Eq. 12.8-3) (Eq. 12.8-4) <br /> for T < TL CS = `Rl for T> TL CS = S DITL <br /> T <br /> \re/ Z(le <br /> CS = 0.43 CS = 11.78 <br /> C$ = 0.43 T<_TL <br /> Cs = 0.64 1.5 times Cs in accordance with 11.4.8 <br /> The total design base shear shall not be less than: <br /> C s = 0.044S Ds I e >_0.01 (Eq. 12.8-5) <br /> CS = 0.05 <br /> nor where S 1 >_ 0.6g: <br /> CS = 0.5S,/(R/la) (Eq. 12.8-6) <br /> CS = 000 <br /> CS = 0.18 <br /> V= 0.18 W Date:4/6/2022 <br /> Page: L1.3 <br />