Earth Pressure Coefficients: cohesive_soft
Earth pressure coefficients (Ka, K0, Kp) by soil category and friction angle for retaining wall and excavation design
| soil category | phi deg | K0 (dimensionless) | Ka (dimensionless) | Kp (dimensionless) | cohesion kPa (kPa) | cohesion psf (psf) | delta wall friction deg (deg) | description | gamma kN m3 (kN/m3) | gamma pcf (pcf) |
|---|---|---|---|---|---|---|---|---|---|---|
| cohesive_soft | 20 | 0.658 | 0.4903 | 2.0396 | 10 | 209 | 13 | Soft clay, normally consolidated | 16 | 102 |
| cohesive_soft | 22 | 0.6255 | 0.455 | 2.198 | 15 | 313 | 15 | Soft clay, normally consolidated | 16.5 | 105 |
| cohesive_soft | 24 | 0.5934 | 0.4217 | 2.371 | 12 | 251 | 16 | Soft to medium clay | 17 | 108 |
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clay_high_plasticity3 rowsclay_low_plasticity3 rowscohesive_medium3 rowscohesive_stiff3 rowscohesive_undrained_hard1 rowcohesive_undrained_medium1 rowcohesive_undrained_soft1 rowcohesive_undrained_stiff1 rowcohesive_undrained_very_stiff1 rowgranular_dense3 rowsgranular_loose3 rowsgranular_medium3 rows