Slope Stability Parameters: Taylor#15
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#15 | phi0#D1#ru#kh | 1 | 0 | Taylor | phi=0 toe failure; Ns = c/(gamma*H); Fs = Ns_chart/(c_trial/(gamma*H_actual)); D=H_D/H where H_D is depth to hard stratum | 15 | 0.173 |
| Taylor#15 | phi0#D1.25#ru#kh | 1.25 | 0 | Taylor | phi=0; D=1.25; deeper failure circle may control at gentle slopes | 15 | 0.181 |
| Taylor#15 | phi0#D1.5#ru#kh | 1.5 | 0 | Taylor | phi=0; D=1.5; deeper failures give larger Ns at gentle slopes | 15 | 0.188 |
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