MnDOT specifications for granular filter material under Class I random riprap
Link to this table
Granular Filter Material Under Class I Random Riprap | |
---|---|
Sieve Size | Percent Passing by Weight |
2 inch | - |
1.5 inch | 100 |
1 inch | - |
3/4 inch | 70-100 |
3/8 inch | 45-90 |
No. 4 | 35-80 |
No. 10 | 20-65 |
No. 40 | 10-35 |
No. 200 | 3-10 |