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603284-001 <br />TABLE 5B: 2010 CBC SEISMIC DESIGN PARAMETERS <br />(SITE-SPECIFIC PROCEDURE) <br />Categorization/Coefficient Design Value <br />Site Latitude 33.76184N <br />Site Longitude -117.90095W <br />Site Class F <br />Short Period (0.2 sec) Site Coefficient, F 0.89 <br />Long Period (1.0 sec) Site Coefficient, Fv 2.18 <br />Adjusted (5% damped) spectral response acceleration <br />parameter at short period, SMS <br />Adjusted (5% damped) spectral response acceleration <br />parameter at a period of 1 sec, SM1 <br />Design (5% damped) spectral response acceleration <br />parameter at short period, SOS <br />Design (5% damped) spectral response acceleration <br />parameter at a period of 1 sec, Sol <br />1.23 <br />0.95 <br />0.82 <br />0.63 <br />5.6 Field Percolation Test Results <br />Immediately after logging and sampling, Borings 8-8 and B-9 with depths of 10 <br />and 5 feet, respectively, were converted to wells for field percolation tests. The <br />average percolation rates of soils at the tested locations are summarized in the <br />table below. <br />TABLE 6: PERCOLATION TEST RATES <br />Boring Depth of Depth of Test <br />Number Hole (feet)Zone (feet) <br />Flow Rate <br />inch/min gallons/day <br />B-8 10 5 -10 0.05 50 <br />B-9 5 0-5 0.005 5 <br />Detailed results of the percolation test results are provided in Appendix B. The <br />civil engineer should incorporate any applicable correction factors to the design <br />-27- <br />Leighton