Earth Pressure Coefficients: sand_well_graded
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) |
|---|---|---|---|---|---|---|---|---|---|---|
| sand_well_graded | 32 | 0.47 | 0.3073 | 3.2546 | 0 | 0 | 21 | Well-graded sand (SW), USCS | 19 | 121 |
| sand_well_graded | 34 | 0.4408 | 0.2827 | 3.5371 | 0 | 0 | 23 | Well-graded sand (SW), USCS | 19.5 | 124 |
| sand_well_graded | 36 | 0.4122 | 0.2596 | 3.8524 | 0 | 0 | 24 | Well-graded sand (SW), USCS | 20 | 127 |
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