Shallow Percolation Tests - Minimum drop as a function of hole diameter.*
| DIAMETER INCHES |
CORRECTION FACTOR |
DROP IN 30 MINUTES |
MINUTES PER INCH DROP |
| 4 |
2.33 |
2.33" |
13 |
| 6 |
1.67 |
1.67" |
18 |
| 8 |
1.33 |
1.33" |
23 |
| 10 |
1.13 |
1.13" |
27 |
| 12 |
1.00 |
1.00" |
30 |
| *Equivalent to State standard test of linear inches in 30 minutes. |