Reduction Coefficient of Passive Earth Pressure
Reduction coefficient ψ for |δ| < φ
φ [°] | ψ for |δ| / φ | |||||
1.0 | 0.8 | 0.6 | 0.4 | 0.2 | 0.0 | |
10 | 1.00 | 0.989 | 0.962 | 0.929 | 0.898 | 0.864 |
15 | 1.00 | 0.979 | 0.934 | 0.881 | 0.830 | 0.775 |
20 | 1.00 | 0.968 | 0.901 | 0.824 | 0.752 | 0.678 |
25 | 1.00 | 0.954 | 0.860 | 0.759 | 0.666 | 0.574 |
30 | 1.00 | 0.937 | 0.811 | 0.686 | 0.574 | 0.467 |
35 | 1.00 | 0.916 | 0.752 | 0.603 | 0.475 | 0.362 |
40 | 1.00 | 0.886 | 0.682 | 0.512 | 0.375 | 0.262 |
45 | 1.00 | 0.848 | 0.600 | 0.414 | 0.276 | 0.174 |