Retaining Wall Design Calculator
Calculate active earth pressure, overturning moment, and sliding forces on a retaining wall using Rankine's theory.
Inputs
ft
pcf
°
psf
Results
Total Active Force
2,000 lb/ft
Overturning Moment
6,667 ft·lb/ft
Active Pressure Coeff (Ka)0.33
Passive Pressure Coeff (Kp)3
Sliding Force2,000 lb/ft
Max Pressure at Base400 psf
How to Use This Calculator
- Enter wall height (H), soil unit weight (γ), friction angle (φ), and surcharge load.
- Review Active Pressure Coefficient (Ka), Passive Pressure Coefficient (Kp), Total Active Force, and Overturning Moment.
- Check overturning and sliding factors of safety — minimum 2.0 for overturning, 1.5 for sliding.
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