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Seismic Analysis <br /> Design Per 2021 IBC &ASCE 7-16 <br /> Seismic Coefficients <br /> Soil Site Class C (per Geotech) <br /> Occupancy Category II (non-essential facility) <br /> Seismic Design Category D <br /> From Computer Program: <br /> SS = 1.378 Lat. = 47.926 Short& 1-Sec Period Mapped <br /> St = 0.489 Long. _ -122.259 Acceleration Parameters (MCE) <br /> SMs= FaSs = 1.654 Fa = 1.200 ASCE 7-16 (Eq. 11.4-1) <br /> SM, = F St = 0.734 Fv= 1.500 ASCE 7-16 (Eq. 11.4-2) <br /> SoS = (2/3)SMs= 1.102 ASCE 7-16 (Eq. 11.4-3) <br /> Spt = (2/3)SM, = 0.489 ASCE 7-16 (Eq. 11.4-4) <br /> Ta = Cthnx = 0.13 Ct= 0.02 ASCE 7-16 (Table 12.8-2) <br /> hn= 12 <br /> x= 0.75 ASCE 7-16 (Table 12.8-2) <br /> R Factor= 4.0 (Steel storage racks) ASCE 7-16 (Table 15.4-1) <br /> IF Factor= 1.0 ASCE 7-16 (Table 1.5-2) <br /> Seismic Base Shear <br /> V= 0.044SpSl = 0.049 W (Minimum Force) ASCE 7-16 (Eq. 12.8-5) <br /> V= (SpSIW)/R= 0.276 W (Governing Force) ASCE 7-16 (Eq. 12.8-2) <br /> V= (SptIW)/RTa = 0.948 W (Maximum Force) ASCE 7-16 (Eq. 12.8-3) <br /> Description Seismic Base Shear By SPM Date 04/09/25 <br /> Checked Date <br /> ENGINEERING Scale NTS Sheet No. <br /> 250 4th Ave.South project Job No. <br /> Suite 200 Sno PUD Op Center East Storage Racks <br /> Edmonds,WA 98020 25270.003 2 <br />