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<br /> <br /> <br /> <br /> <br /> <br />3rd & Broadway, Santa Ana, CA <br />Volume 1 - Basis of Design June 17, 2024 | Project # S21043.00 <br /> pg. 30 <br />Table 2.5-2– Seismic Design Parameters – Residential building <br /> <br />Parameter Value <br />Occupancy Category II <br />Importance Factor 1 <br />Site Class D <br />Sds 1.177 <br />Sd1 0.736 <br />Seismic Design Category D <br />Lateral Resisting System Special Reinforced Concrete <br />Shear Walls <br />Building Mode T1 (Translational) 1.799 sec <br />Building Mode T2 (Translational) 1.496 sec <br />Building Mode T3 (Torsional) 1.307 sec <br />Response Modification Coefficient, R 5 <br />System Overstrength Factor, Ωo 2.5 <br />Deflection Amplification, Cd 5 <br />Seismic Coefficient, Cs 0.105 <br />Seismic Weight, W 65,010 kips <br />Equivalent Lateral Force Base Shear 6,855 kips <br />Response Spectrum Base Shear 6,855 kips <br /> <br /> <br />