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S Van Ness Ave <br /> <br />3.2.1.2 Base Shear <br />The base shear is calculated according to the following equations: <br />Cs = 0.159 <br />Seismic Weight = 28281 lb <br />Base Shear = Cs × W = 0.159 × 28281 = 4497 lb = 4.5 kips <br /> <br />3.2.1.3 Horizontal Distribution of Seismic Load <br />Horizontal distribution of seismic load is tabulated in Table 6. <br /> <br /> <br />Story Line A AT A/AT Base <br />Shear <br />Shear Line <br />Force ρF 0.7×ρF <br />sft sft - lb lb lb lb <br />Roof <br />A 129.934 <br />962.45 <br />0.135 <br />4497 <br />607 607 424.9 <br />B 245.852 0.255 1147 1147 802.9 <br />C 360.642 0.375 1686 1686 1180.2 <br />D 226.33 0.235 1057 1057 739.9 <br />3 481.223 0.5 2249 2249 1574.3 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Table 6. Horizontal Distribution of Seismic Load <br />Page 7 of 213