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R-26 — Clay Low Plasticity

Soil Category
Clay Low Plasticity
Phi Deg
26
K0 (dimensionless)
0.5616
Ka (dimensionless)
0.3905
Kp (dimensionless)
2.5611
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)
17
Description
Lean Clay (CL), USCS, Drained
Gamma kN M3 (kN/m3)
19
Gamma Pcf (pcf)
121
Specimen Id
CL-Oc-Stiff
clay_low_plasticity — phi deg 26 · specimen id CL-OC-stiff · K0 0.5616 dimensionless · Ka 0.3905 dimensionless · Kp 2.5611 dimensionless | Earth Pressure Coefficients | Engineering Database