Traffic Level | |||
CBR | A | B | C |
1 | 8 in. DGA 6.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 16" | 8 in. DGA 7.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 17" | 8 in. DGA 8.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 18" |
2 | 8 in. DGA 5.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 15" | 8 in. DGA 6.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 16" | 8 in. DGA 7.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 17" |
3 | 8 in. DGA 4.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 14" | 8 in. DGA 5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 14.5" | 8 in. DGA 6.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 16" |
4 | 8 in. DGA 3.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 13" | 8 in. DGA 4.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 14" | 8 in. DGA 5.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 15" |
5 | 8 in. DGA 2.5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 12" | 8 in. DGA 4 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 13.5" | 8 in. DGA 5 in. Asphalt Base 1.5 in. Asphalt Surface Total Depth = 14.5" |
* All base depths are rounded up to the nearest one-half inch. Traffic levels: A up to 400 adt, B up to 700 adt, C up to 1500 adt; where the adt exceeds 1500, the engineer shall submit design criteria. Where multiple CBR values are found the lowest value (higher number) shall be used. | |||
(Ord. passed 3- -1995; Ord. passed 10- -2005; Ord. 2018-03, passed 2-14-2018; Ord. passed 1- -2020)