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<br />LESTER-SHRINER PROPERTY <br />132-8-2 <br /> Page 20 <br /> <br />flatwork could potentially be constructed directly on finished compacted engineered fills that <br />exhibit relatively low plasticity and expansion potential. Sidewalks in public street areas should <br />be designed in accordance with City of Pleasanton design standards. <br /> <br />SECTION 9: VEHICULAR PAVEMENTS <br /> <br />9.1 ASPHALT CONCRETE <br /> <br />The following asphalt concrete pavement recommendations tabulated below are based on the <br />Caltrans Highway Design Manual (latest edition), estimated traffic indices for various pavement- <br />loading conditions, and on an assumed preliminary design R-values of 5 for roadways <br />constructed of clay fill and 30 for roadways constructed on bedrock cut or fill. The design R- <br />values were chosen based on experience with similar shallow bedrock conditions and <br />engineering judgment considering the potentially variable surface conditions that may be <br />encountered during construction. <br /> <br />Table 3: Preliminary Asphalt Concrete Pavement Recommendations (R-value = 5) <br /> <br />Design <br />Traffic Index <br />(TI) <br />Asphalt <br />Concrete <br />(inches) <br />Class 2 <br />Aggregate <br />Base* (inches) <br />Total Pavement <br />Section Thickness <br />(inches) <br />5.0 2.5 11.0 13.5 <br />5.5 3.0 12.0 15.0 <br />6.0 3.5 13.0 16.5 <br />6.5 4.0 13.0 17.0 <br />*Caltrans Class 2 aggregate base; minimum R-value of 78 <br /> <br /> <br />Table 4: Preliminary Asphalt Concrete Pavement Recommendations (R-value = 30) <br /> <br />Design <br />Traffic Index <br />(TI) <br />Asphalt <br />Concrete <br />(inches) <br />Class 2 <br />Aggregate <br />Base* (inches) <br />Total Pavement <br />Section Thickness <br />(inches) <br />5.0 2.5 7.0 9.5 <br />5.5 3.0 7.0 10.0 <br />6.0 3.0 8.0 11.0 <br />6.5 3.5 9.0 12.5 <br />*Caltrans Class 2 aggregate base; minimum R-value of 78 <br /> <br />Subgrade R-value testing should be performed during site grading to confirm the final pavement <br />design thicknesses. <br /> <br />SECTION 10: LIMITATIONS <br /> <br />This report, an instrument of professional service, has been prepared for the sole use of <br />Ponderosa Homes specifically to support the design of the Lester-Shriner Property Residential <br />15! CORNERSTONE <br />EARTH GROUP