Pavement | Type of Street *** | ||
Secondary | Local and Alley | ||
Concrete | Uniform (design) thickness | 7 inches | 6 inches |
Base (compacted sand base) | 3 inches | 2 inches | |
Total thickness | 10 inches | 8 inches | |
Asphaltic concrete **** | Wearing surface | 1½ inches | 1 inch |
Binder | 3½ inches | 2¾inches | |
Water-bound macadam | 6 inches | 3 inches | |
Compacted aggregate base | 8 inches | 7½ inches | |
Total thickness | 19 inches | 14¼inches | |
Notes:
* These design specifications are based on a California Bearing Ratio (C.B.R.) of 3%.
** All material and workmanship shall be as required to meet current Indiana State Highway Commission Standard Specifications.
*** All primary street design requirements shall be based on information obtained from on-site engineering studies.
**** For intersections and parking strips on residential streets, use secondary street design characteristics.
(Ord. 466, Appendix: Minimum Street Design Standards, passed 5-11-98)