Earth Pressure At Rest Calculator
At-rest lateral earth pressure for a normally consolidated soil via Jaky K0 = 1 - sin(phi): horizontal effective stress sigma_h' = K0 * sigma_v'. Stress in kPa, angle in degrees.
Description
At-rest lateral earth pressure for a normally consolidated soil via Jaky K0 = 1 - sin(phi): horizontal effective stress sigma_h' = K0 * sigma_v'. Stress in kPa, angle in degrees.
Earth Pressure At Rest Calculator: At-rest lateral earth pressure for a normally consolidated soil via Jaky K0 = 1 - sin(phi): horizontal effective stress sigma_h' = K0 * sigma_v'. Stress in kPa, angle in degrees.
When to use Earth Pressure At Rest
Use this geological calculation for a transparent first-pass interpretation of measured rock, soil, fluid, well, stratigraphic, isotopic, geophysical, or seismic data under an explicitly selected model.
- sigma v'
- Effective vertical stress sigma_v' in kPa.
- phi
- Effective friction angle phi in degrees.
How Earth Pressure At Rest works
At-rest lateral earth pressure for a normally consolidated soil via Jaky K0 = 1 - sin(phi): horizontal effective stress sigma_h' = K0 * sigma_v'. Stress in kPa, angle in degrees. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.1
- K0
- At-rest earth pressure coefficient K0, dimensionless.
- sigma h'
- Horizontal effective stress sigma_h' in kPa.
Limitations and assumptions
- Geotechnical correlations and idealized failure models depend on stratigraphy, sampling disturbance, drainage, stress history, groundwater, density, anisotropy, scale, construction sequence, and laboratory or field method. Site-specific design requires investigation and code factors.
- Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.
Alternative or Complementary approaches
Compare independent measurements and models, retain units and analytical metadata, propagate uncertainty, and validate interpretations against logs, cores, maps, laboratory data, or field observations.
References
-
Geotechnical engineering — Wikipedia contributors
Similar or alternative tools
- Mohr Coulomb Shear Strength Calculator
Mohr-Coulomb shear strength tau_f = c' + sigma_n' * tan(phi') for given effective normal stress, cohesion and friction angle.
- Overconsolidation Ratio Calculator
Overconsolidation ratio OCR = sigma_p' / sigma_v0' where sigma_p' is the maximum past effective vertical stress (preconsolidation pressure) and sigma_v0' the present effective overburden stress, both in kPa.
- Preconsolidation Pressure Calculator
Maximum past effective vertical stress sigma_p' = OCR * sigma_v0' from the definition of the overconsolidation ratio. Stresses in kPa; use a Casagrande construction on the oedometer curve for direct measurement.