| Percentage reduction | Friction angle | Cohesion | PLAXIS 2D | Dowel Theory | GGU Stability | 
| i [-] | φ' [°] | c' [kN/m2] | SFEBR [-] | SFDT [-] | SFGGU [-] | 
| 1.00 | 18.32 | 3.55 | 1.63 | 2.21 | 1.16 | 
| 0.95 | 17.46 | 3.37 | 1,55 | 2.12 | 1.11 | 
| 0.90 | 16.59 | 3.20 | 1.39 | 2.04 | 1.06 | 
| 0.85 | 15.72 | 3.02 | 1.29 | 1.95 | 1.01 | 
| 0.80 | 14.83 | 2.84 | 1.21 | 1.86 | 0.96 |