Slope Stability Parameters: Taylor#90
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 | depth factor D (dimensionless) | friction angle deg (deg) | method | notes | slope angle deg (deg) | stability number Ns (dimensionless) |
|---|---|---|---|---|---|---|---|
| Taylor#90 | phi0#D1#ru#kh | 1 | 0 | Taylor | phi=0; vertical cut; Ns=1/(3.83) ~0.261 per Terzaghi for vertical slopes with toe circle | 90 | 0.261 |
| Taylor#90 | phi10#D1#ru#kh | 1 | 10 | Taylor | phi=10 deg; vertical cut | 90 | 0.213 |
| Taylor#90 | phi20#D1#ru#kh | 1 | 20 | Taylor | phi=20 deg; vertical cut | 90 | 0.169 |
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