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TMC ENGINEERS INC. <br />Geotechnical, Structural and Civil Engineering <br />Add: 9542 Pacific Ave, Anaheim, CA92804. Phone: 714-829-5053; Email: Tienchu.pe@gmail.com <br /> <br />Page 11 <br /> <br /> <br />7.2 Shallow Foundation Design <br />7.2.1 Allowable foundation and Lateral Pressure: <br />Based on our field investigation and laboratory testing results. In accordance with Section <br />1806.2 of the 2022 California Building Code. It is recommended that the following <br />parameters should be considered in the foundation design and construction: <br /> <br />For conservative, the lowest values in table 1806.2, 2022 CBC Code, allowable bearing <br />value of 1500 pounds per square foot. <br /> <br />7.2.2 Settlement <br />Distress to the existing house due to settlement of the underlying soil was not observed. <br />Settlement of soils underlying is not a concerned for the proposed development. <br />Under construction, differential settlement between adjacent columns is not anticipated to <br />exceed 1/4 inch for the adjacent column spaced at a distance of about 40 feet. <br /> <br />7.2.3 Lateral Pressures <br />Passive earth pressure may be computed as an equivalent fluid pressure of 150 pounds per <br />cubic foot, with a maximum earth pressure of 1500 pounds per square foot. An allowable <br />coefficient of friction between soil and concrete of 0.3 may be used with the dead load forces. <br />When combining passive pressure and frictional resistance, the passive pressure component <br />should be reduced by one-third. <br /> <br />2726 W Strawberry Ln & <br />Unit# 23/17/2025