| Material I | Material II | ||
| lab result | From inverse modeling | lab result | From inverse modeling |
| γ = 20.50KN/M³ | γ = 21 | γ = 20.00 KN/M³ | γ = 20.6 |
| φef = 26.5.00 | φef = 28.8 | φef = 26.5.00 | φef = 26.6 |
| Cef = 6.00 Kpa | Cef = 10 | Cef = 0.00 Kpa | Cef = 6 |