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19011 Wood-Sno Road NE,Suite 100 <br /> BYEWoodinville,WA 98072-4436 <br /> Phone:425-814-8448 <br /> E NGINEE-RIIti G Fax:425-821-2120 <br /> Pacific Ridge Homes Revision Date: 1/1112021 <br /> Thelon ~Elevations A & Br <br /> Redundancy,p 1.0 1 w (Section 12.3.4) <br /> Design Base Shear <br /> SMs = FeSs (Eq. 11.4-1) Sm, = F„S, (Eq. 11.4-2) <br /> = 1.60 = 0.90 <br /> Sns = %SMs (Eq. 11.4-3) Sa, _ Y.SM, (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 t (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= C 5 W (Eq. 12.8-1) <br /> SD5 <br /> CS = (Te <br /> R) (Eq. 12.8-2) <br /> CS = 0.18 <br /> The total design base shear need not exceed- <br /> (Eq. 12.8-3) (Eq. 12.84) <br /> for T TL CS = SD1 SDiTi <br /> `R for T> TL CS = (Ele)T`w Tz <br /> CS = 0.43 Cs = 11.78 <br /> Cs = 0.43 Ts TL <br /> C 5 = 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 1, >_0.01 (Eq. 12.8-5) <br /> CS = 0.05 <br /> nor where S, >_ 0.6g: <br /> Cs = 0.5S,/(Rile) (Eq. 12-8-6) <br /> Cs = 0.00 <br /> CS = 0.18 <br /> V= 0.18 W Date:4/6/2022 <br /> Page: L1.3 <br />