Soil Permeability Coefficient (k) Calculator

Determine soil hydraulic conductivity (k) from constant-head and falling-head permeameter tests, grain size correlations (Hazen, Kozeny-Carman), and SPT correlations.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)
σy — Normal Stress Y (MPa)
τxy — Shear Stress (MPa)
⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.
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How It Works

Determine soil hydraulic conductivity (k) from constant-head and falling-head permeameter tests, grain size correlations (Hazen, Kozeny-Carman), and SPT correlations

Each component has a specific meaning:

  • Constant-head — The constant-head recorded for the patient or scenario being assessed.
  • Falling-head permeameter tests — The falling-head permeameter tests recorded for the patient or scenario being assessed.
  • Grain size correlations (Hazen — The grain size correlations (hazen recorded for the patient or scenario being assessed.
  • Kozeny-Carman) — The kozeny-carman) recorded for the patient or scenario being assessed.
  • SPT correlations — The spt correlations recorded for the patient or scenario being assessed.

Note: Interpret the soil permeability coefficient result against the clinical thresholds and context described above.

How to Use

Enter the constant-head, falling-head permeameter tests, grain size correlations (Hazen, Kozeny-Carman), SPT correlations for the patient or scenario you are assessing. Determine soil hydraulic conductivity (k) from constant-head and falling-head permeameter tests, grain size correlations (Hazen, Kozeny-Carman), and SPT correlations. Use the soil permeability coefficient result to inform your clinical assessment.

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Frequently Asked Questions