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EXISTING SHEAR WALL SYSTEM (WOOD SIDING) Page:_6 <br />IE Oriel Engineering Project No.: 302.270-18 <br />DATE: 01/24/19 <br />vR Structural & Bridge Engineers <br />9750 Miramar Road, Suite 310 Phone # : (858) 335-7643 PROJECT: Pleasanton Century <br />House BY: ESY <br />San Diego, CA 92126 www.ode2.com Seismic Force-Resisting Systems <br />SEISMIC DEMANDS ON STRUCTURAL Buildings ASCE 7.1012.8.1 <br />Code: 2013 CBC, ASCE 7-10 CHAPTER 11, 12,13 SEISMIC DESIGN CRITERIA <br />Soil Site Class: D <br />Table 20-3-1, Default= D <br />S,: 184.7 %g <br />(USGS using Latitude/Longitude) <br />S{ 69.0 %g <br />Fe: 1.000 <br />Table 11.4-1 <br />F,,: 1.500 <br />Table 11.4-2 <br />SMS: 1.847 <br />f, -S, <br />SMl: 1.035 <br />f , -S r <br />SDs: 1.231 <br />2/3(S Ms) <br />Sp{. 0.690 <br />2/3(S Mr) <br />Occupancy: II <br />Table 1.5-1 <br />Importance Factor, I,: 1 <br />Table 1.5-2 <br />Seismic Force Resisting System: <br />A. BEARING WALL SYSTEMS <br />17. Light-frame walls with shear panels of all other materials <br />Response Modification Factor, R: 2 <br />Table 12.2-1 <br />Overstrength Factor, 0: 2.5 <br />Deflection Amplification Factor, Cd: 2 <br />Fundamental Period: <br />Structural Type: All other structural systems <br />Ct: 0.02 <br />Table 12.8-2 <br />x: 0.75 <br />Table 12.8-2 <br />Structural Height, hn: 19.5 It <br />Approximate Fundamental Period, T = Ct * hn"x <br />ASCE 7-10, Eq. 12.8-7 <br />T = 0.19 sec <br />Long-Period Transition Period, TL: 8 sec <br />Fig. 22-12- fig 22-16 <br />Calculation of Seismic Response Coefficient (ASCE 7.10.12.8.1.1): <br />Is the Structure Regular and 5 5 Stories? No <br />ASCE7-10, 12.8.1.3 <br />Cs = SDS l (R I le) <br />ASCE7-)0, Eq. 12.8-2 <br />Cs = 0.616 <—. Governs <br />Csmax = SD1 / [r* (R / le)] <br />ASCE 7-10, Eq, 128-3/Eq. 12.8-4 <br />Csmax =1.859 <br />Csminl = 0.044 * SDS * Ip <br />ASCE 7-10, Eq. 12.8-5 <br />Csminl = 0.054 <br />Csmin2 = (0.5 * S1) I (R l 1) <br />ASCE 7-10, Eq. 12.8-6 <br />Csmin2 = 0.173 <br />Cs = 0.616 <br />Desion Seismic Base Shear (ASCE 7-10.12.8.1): <br />V=Cs*Wp <br />V = 0.616 * Wp (LFRD) <br />