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R-22 — Clay Low Plasticity

Soil Category
Clay Low Plasticity
Phi Deg
22
K0 (dimensionless)
0.6255
Ka (dimensionless)
0.455
Kp (dimensionless)
2.198
Cohesion kPa (kPa)
25
Cohesion Note
Cohesion Psf Is Non-Monotonic vs Phi for Clay Low Plasticity Because the Source Rows Compile Multiple specimens; Cohesion Peaks at PHI=24 in the Das/Bowles compilation. Use Specimen Id to disambiguate.
Cohesion Psf (psf)
522
Delta Wall Friction Deg (deg)
15
Description
Lean Clay (CL), USCS, Drained
Gamma kN M3 (kN/m3)
18.5
Gamma Pcf (pcf)
118
Specimen Id
CL-Nc-Medium
clay_low_plasticity — phi deg 22 · specimen id CL-NC-medium · K0 0.6255 dimensionless · Ka 0.455 dimensionless · Kp 2.198 dimensionless | Earth Pressure Coefficients | Engineering Database