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Soil Pressure Factors <br />Earth Pressure Factors <br />� —27 <br />Maximum Dry Density = 121.4 <br />Active Earth Pressure <br />CITY OF SANTA ANA <br />PlanningandBuilding Agency <br />1602 W Brook St <br />Santa Ana CA 92703 <br />Approved <br />FOR PERMIT ISSUANCE <br />Master ID: <br />Date: <br />y= 109.26 pcf <br />Ka= <br />0.3755248059 <br />Pa= <br />41.0298402926 <br />Passive Earth Pressure <br />Kp= <br />2.6629399287 <br />Pp= <br />290.9528166097 <br />At Rest <br />Kat= <br />0.5460095003 <br />Pat-- <br />59.6569980027 <br />Seismic Factors <br />Ss 1.297 SMi null Fa 1.2 PGA 0.551 <br />S, 0.463 SDs 1.037 Fv null FPGA 1.2 <br />Sms 1.556 SDI null PGA M 0.661 <br />A full list of Seismic factors is in the Attachment `G' <br />Soluble Sulfates <br />The results of the limited in-house laboratory tests indicate that the on -site soils tested contain a <br />water-soluble sulfate content of .16 by weight. Based on Table 19.3.1.1 of ACI 318-14, the Exposure <br />Class S 1 is appropriate for onsite soils. Water cement ratio (0.50) shall be adjusted to produce a low <br />slump (<3inches>) mix. Concrete specifications may be changed by the Structural Engineer. <br />Type V cement is not required but is recommended for use. Strength should be 4000 psi. <br />Expansive Soil <br />The soil found on this site consists of silty clay. The soil found on the site is expansive. A modified <br />test in the laboratory and the condition of the concrete paving and foundations on site show low signs <br />of expansive reaction in the soil. Expansion Index: 42 Low <br />3 <br />