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,- 19011 Wood-Sno Road NE,Suite 100 <br /> Woodinvift,WA 980721143E <br /> Phone:425-814-8448 <br /> 1`QGlit�lE1 RIIti G Nx:425-B21-2120 <br /> Pacific Ridge Homes Revision Date: 1/11/2021 <br /> Lennon Elevations A & B) <br /> Redundancy,p 1.0 "► (Section 12.3.4) <br /> Design Base Shear <br /> Sass = F e S s (Eq. 11.4-1) S M, = F,,S 4 (Eq. 11.4-2) <br /> = 1.80 = 0.90 <br /> S Ds = %S Ms (Eq. 11.4-3) S D 4 = r/S m, (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),h„ = 24 ft <br /> Approximate Fundamental Period, Te = C, (h„)" (Eq. 12.8-7) <br /> T = Ta = 0.22 <br /> TI. = 6 (Figs. 22-14 thru 22-17) <br /> Calculated design base shear. <br /> V= CS W (Eq. 12.8-1) <br /> SDS <br /> CS = R1 (Eq. 12.8-2) <br /> l� <br /> CS = 0.18 <br /> The total design base shear need not exceed: <br /> (Eq. 12.8-3) (Eq. 12,84) <br /> E S s 1 TL <br /> for T s Tt Cs = for T> Tr Cs = z�R <br /> i T(T' t8� <br /> i Ca = 11.78 <br /> i CS = 0.43 <br /> C a = 0.43 T 5 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 /> Cs = 0.044SDs1, 0.01 (Eq. 12.8-5) <br /> CS = 0.05 <br /> nor where S, z 0.6g: <br /> C 5 = 0.55 4/(R/le) (Eq. 12.8-8) <br /> CS = 0.00 <br /> CS = 0.18 <br /> V= 0.18 W Date:3/31/2022 <br /> Page: 1-1.3 <br />