Laserfiche WebLink
7.2 Shallow Foundation Design <br />7.2.1 Allowable foundation and Lateral Pressure: <br />Based on our field investigation and laboratory testrng results. ln accordance with Section <br />1806.2 of the 2019 California Building Code. lt is recommended that the following <br />parameters should be considered in the foundation design and construction: <br />For conservative, the lowest values in table 1806.2, 20'19 CBC Code, allowable bearing <br />value of 1500 pounds per square foot. <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 />7.2.3 Laleral Pressu res <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 onethird. <br />Page 10