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WEST 9540 Semiahmoo Parkway (425)347-8998 <br /> COAST r <br /> STRUCTURAL #137 wcse.net <br /> ENGINEERING,INC. Blaine,WA 98230 <br /> LATERAL ANALYSIS - TWO STORY STRUCTURE <br /> Site Class: D <br /> SS : 1.25 (mapped spectral accel.Short period) Fa : 1.0 (TABLE 11.4-1 ) SDS = (2/3)Fa SS = 0.83 <br /> Si : 0.40 (mapped spectral accel.1-sec.period) F„ : 1.6 (TABLE 11.4-2) SD1 = (2/3)Fy S1 = 0.43 <br /> V = (F*Sds/R)*W = 0.141 W <br /> AISC 12.14.8.1 F = 1.1 for two-story buildings <br /> R = 6.5 Light-framed walls sheathed with wood structural panels <br /> 1 = 1.0 <br /> Calculating Structure Contributing Seismic Weights: <br /> Description Area psf W. (k) <br /> Roof 1432 [ = 1432 15 21.5 <br /> 2nd Floor Walls 856 = 856 10 8.6 <br /> 2nd Floor 1280 = 1280 10 12.8 <br /> 1st Floor Walls 1906 = 1906 10 19.1 <br /> Using allowable stress design load combinations per ASCE 2.4.1 Total W = 61.9 <br /> V = 0.7 x 0.141 x 61.9 = 6.11 kips <br /> Project: W4737 Sheet No: 12 3/11/2022 <br />