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. C 19011 Wood-Sno Road NE,Suite 100 <br /> Woodinville,WA 98072-4436 <br /> � IL Phone:425-814-8448 <br /> NNUMEEMEMONWHOW tE:NCINEE-RI Fax;425-821-2120 <br /> Pacific Ridge Homes Revision Date: 1/11/2021 <br /> Thelon (Elevations A & B) <br /> Redundancy, p 1.o ® (Section 12.3.4) <br /> Design Base Shear <br /> S Ms = F e S S (Eq. 11.4-1) S M, = F v S 3 (Eq. 11.4-2) <br /> = 1.80 = 0.80 <br /> S DS = %S MS (Eq. 11.4-3) S a I = %S M i (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 fi <br /> Approximate Fundamental Period, T, = 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 /> C s = ` eR` (Eq. 12.8-2) <br /> hJ <br /> Cs = O.?$ <br /> The total design base shear need not exceed: <br /> (Eq. 12.8-3) (Eq. 12.8-4) <br /> SDI SDSTL <br /> for T : TL C s = R for T> TL C s = (R l <br /> T�Ie} T z \lei <br /> CS = 0.43 Ca = 11.78 <br /> CS = 0.43 Ts TL <br /> C a = 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 = 0.044SDS11 z0.01 (Eq. 12.8-5) <br /> CS = 0.05 <br /> nor where S i ? 0.6g: <br /> Cs = 0.5S,/(Rlle) (Eq. 12.8-6) <br /> C s = 0.00 <br /> R <br /> Cs = 0.18 <br /> V= 0.18 W Date:4/6/2022 <br /> Page: L1.3 <br />