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WEST tr <br /> 1624 Grove Street (425)347-8998 <br /> COAST STRUCTURAL Suite D2 wcse.net <br /> Z <br /> ENGINEERING,INC. Marysville,WA 98270 <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 ) SIDS = (2/3)Fa SS = 0.83 <br /> Si 0.40 (mapped spectral accel. 1-sec. period) F 1.6 (TABLE 11.4-2) SIDI = (2/3)F„ Si = 0.43, <br /> Design Method - ASCE 7-10 Simplified Procedure 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 (ASCE 7-10 Table 12.14-1) Light-framed walls sheathed with wood structural panels <br /> I = 1.0 (ASCE 7-10 Table 1.5-2) <br /> Calculating Structure Contributing Seismic Weights: <br /> Description Area psf W. (k) <br /> Upper Roof 2474 = 2474 15 37.1 <br /> 2nd Floor Walls 1152 = 1152 10 11.5 <br /> 2nd Floor 1898 = 1898 10 19.0 <br /> 1st Floor Walls 2280 = 2280 10 22.8 <br /> Using allowable stress design load combinations per ASCE 2.4.1 Total W = 90.4 <br /> V = 0.7 X 0.141 x 90.4 = 8.93 kips <br /> Project: W4371 Sheet No: 24 9/5/2017 <br />