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524 S Shawnee Dr. <br />Santa Ana CA 92704 <br />Soil Pressure Factors <br />Earth Pressure Factors <br />(1) 26 <br />Maximum Dry Density = 117.8 y= 106.02 <br />Active Earth Pressure <br />Ka= 0.3904617069 <br />Pa= 41.3967501655 <br />Passive Earth Pressure <br />Kp= 2.5610706048 <br />Pp= 271.5247055208 <br />At Rest <br />Kat= 0.5616288533 <br />Pat= 59.5438910268 <br />Seismic Factors <br />Ss 1.311 Smi null Fa 1.2 <br />S1 0.468 SDS 1.049 Fv null <br />Sms 1.573 Sin null <br />A full list of Seismic factors is in the Attachment 'G' <br />PGA 0.559 <br />FPGA 1.2 <br />PGA m 0.671 <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 Si 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 sandy silt with clumps of clay. The soil found on the site is <br />expansive. A modified test in the laboratory and the condition of the concrete paving and foundations <br />on site show low signs of expansive reaction in the soil. Expansion index : 26 low <br />3 <br />524 S Shawnee Dr & <br />Unit# 22/7/2025