Pressure Distribution
Calculation Results
Pressure Coefficient -
Total Pressure Force -
Pressure at Base -
Stability Checks
Sliding Stability -
Overturning Stability -
Bearing Capacity -
Detailed Calculations
Earth Pressure Theories

The calculator uses two main theories for earth pressure calculation:

Rankine's Theory

Rankine's theory assumes:

  • The wall is vertical and smooth (no friction between wall and soil)
  • The soil surface is horizontal
  • The soil is homogeneous and isotropic

Active earth pressure coefficient: \( K_a = \frac{1 - \sin\phi}{1 + \sin\phi} \)

Passive earth pressure coefficient: \( K_p = \frac{1 + \sin\phi}{1 - \sin\phi} \)

Coulomb's Theory

Coulomb's theory accounts for:

  • Wall friction (δ)
  • Wall inclination (β)
  • Backfill inclination (α)

The theory uses a more complex formulation considering wedge equilibrium.

Calculation steps will appear here after performing calculations.

References
  • Das, B. M. (2010). Principles of Geotechnical Engineering.
  • Craig, R. F. (2004). Craig's Soil Mechanics.
  • Bowles, J. E. (1996). Foundation Analysis and Design.
Formulas Used
  • Rankine's Earth Pressure Coefficients
  • Coulomb's Earth Pressure Coefficients
  • Mononobe-Okabe Method for Seismic Pressures
  • Bearing Capacity and Stability Formulas