Slope class | Slope (%) | Slope (degree) | Terminology |
1 | 0 - 0.5 | 0 | Level |
2 | >0.5 - 2 | 0.3 - 1.1 | Near level |
3 | >2 - 5 | >1.1 - 3 | Very gentle slopes |
4 | >5 - 10 | >3 - 5 | Gentle slopes |
5 | >10 - 15 | >5 - 8.5 | Moderate slopes |
6 | >15 - 30 | >8.5 - 16.5 | Strong slopes |
7 | >30 - 45 | >16.5 - 24 | Very strong slopes |
8 | >45 - 70 | >24 - 35 | Extreme slopes |
9 | >70 - 100 | >35 - 45 | Steep slopes |
10 | >100 | >45 | Very steep slopes |