Pavement Aashto: cement_treated_subbase to drainage_good
AASHTO pavement design material properties including layer coefficients, drainage coefficients, and modulus values for flexible and rigid pavement design
| material id | description | drainage coefficient max (dimensionless) | layer type | material name | max thickness in | min thickness in (in) | notes |
|---|---|---|---|---|---|---|---|
| drainage_excellent | Time to drain 50% of saturable water; best drainage condition | 1.2 | drainage | Drainage Quality - Excellent | Water removed within 2 hours | 1.4 | AASHTO Guide for Design of Pavement Structures (1993) |
| drainage_fair | Fair drainage; some seasonal saturation expected | 0.8 | drainage | Drainage Quality - Fair | Water removed within 7 days | 1 | AASHTO Guide for Design of Pavement Structures (1993) |
| drainage_good | Good drainage with moderate free-draining base | 1 | drainage | Drainage Quality - Good | Water removed within 1 day | 1.2 | AASHTO Guide for Design of Pavement Structures (1993) |
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