<br />26 <br /> <br />certerra.com 4660 Main Street, Suite 100, Springfield, Oregon 97478 T: 541.393.6340 <br />Table 4: Portland Cement Concrete - Recommended Minimum Thicknesses (inches) <br />Private roads overlying firm CLAY subgrade. <br />Pavement Materials Parking <br />Areas <br />Drive Lane <br />Areas <br />Portland Cement Concrete 5 5 <br />Crushed Aggregate Base Course <br />(underlain by Mirafi 500X geotextile fabric or equivalent) 18 18 <br /> <br />Table 5: Asphaltic Concrete - Recommended Minimum Thicknesses (inches) <br />Private roads overlying hard Eugene Formation subgrade. <br />Pavement Materials Parking <br />Areas <br />Drive Lane <br />Areas <br />Asphaltic Concrete 3 4 <br />Crushed Aggregate Base Course 6 6 <br /> <br />Table 6: Portland Cement Concrete - Recommended Minimum Thicknesses (inches) <br />Private roads Overlying hard Eugene Formation subgrade. <br />Pavement Materials Parking <br />Areas <br />Drive Lane <br />Areas <br />Portland Cement Concrete 5 5 <br />Crushed Aggregate Base Course 6 6 <br /> <br />Table 7: Asphaltic Concrete - Recommended Minimum Thicknesses (inches), Public Road. <br />Pavement Materials Parking <br />Areas <br />Drive Lane <br />Areas <br />Asphaltic Concrete 6 6 <br />Crushed Aggregate Base Course <br />(underlain by Mirafi 500X geotextile fabric or equivalent) 18 18 <br /> <br />Table 8: Portland Cement Concrete - Recommended Minimum Thicknesses (inches), Public Road. <br />Pavement Materials Parking <br />Areas <br />Drive Lane <br />Areas <br />Portland Cement Concrete 7 7 <br />Crushed Aggregate Base Course <br />(underlain by Mirafi 500X geotextile fabric or equivalent) 16 16 <br /> <br />We recommend that asphaltic concrete materials be compacted in accordance with the City of Eugene’s current <br />requirements for public roadways. Asphaltic concrete materials should be compacted to at least 91 percent of the <br />material’s theoretical maximum density as determined in general accordance with ASTM D 2041 (Rice Specific