Slope Stability Parameters: infinite_slope#25
Slope stability parameters — Taylor stability numbers (Ns) for c-phi and phi=0 soils with depth factors, infinite slope factor of safety (dry and saturated), and Bishop simplified method FS values with pore pressure ratio and seismic coefficient
| method slope | phi D key | cohesion ratio c over gamma H (dimensionless) | depth factor D (dimensionless) | factor of safety (dimensionless) | friction angle deg (deg) | method | notes | pore pressure ratio ru (dimensionless) | seismic coefficient kh (dimensionless) | slope angle deg (deg) |
|---|---|---|---|---|---|---|---|---|---|---|
| infinite_slope#25 | phi30#D1#ru0#kh0 | 0 | 1 | 1.21 | 30 | infinite_slope | Dry cohesionless: FS=tan(30)/tan(25)=0.577/0.466=1.24; approximate | 0 | 0 | 25 |
| infinite_slope#25 | phi30#D1#ru0.5#kh0 | 0 | 1 | 0.62 | 30 | infinite_slope | Saturated seepage: FS=(gamma'/gamma_sat)*tan(phi)/tan(beta)=0.5*0.577/0.466=0.62 | 0.5 | 0 | 25 |
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