PerRoad: Input Variability
The tables below contains the default level of variability by material and layer number.
|
Material |
Distribution |
COV |
|
AC |
Lognormal |
30% |
|
Cracked AC |
Lognormal |
60% |
|
PCC |
Lognormal |
15% |
|
Rubblized PCC |
Lognormal |
25% |
|
Crack and Seat
PCC |
Lognormal |
25% |
|
Break and Seat
PCC |
Lognormal |
25% |
|
Granular Base |
Lognormal |
40% |
|
Soil |
Lognormal |
50% |
|
Rock |
-- |
0% |
|
Other |
-- |
0% |
|
Layer |
Distribution |
COV |
|
1 |
Normal |
5% |
|
2 |
Normal |
8% |
|
3 |
Normal |
15% |
|
4 |
Normal |
20% |