Earth Pressure Coefficients: clay_high_plasticity
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) |
|---|---|---|---|---|---|---|---|---|---|---|
| clay_high_plasticity | 20 | 0.658 | 0.4903 | 2.0396 | 40 | 836 | 13 | Fat clay (CH), USCS, drained | 17 | 108 |
| clay_high_plasticity | 22 | 0.6255 | 0.455 | 2.198 | 50 | 1,045 | 15 | Fat clay (CH), USCS, drained | 17.5 | 111 |
| clay_high_plasticity | 24 | 0.5934 | 0.4217 | 2.371 | 45 | 940 | 16 | Fat clay (CH), USCS, drained | 18 | 115 |
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