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eng.passive-earth-pressure-Rankine Calculator
Calculates passive earth pressure coefficient and distribution for soil behind a retaining wall using Rankine's passive theory. Passive pressure is the maximum resistance the soil can provide — it's mobilised only after significant wall movement toward the soil.
Inputs
Gamma Kn M3
Body or object weight. For health calculators, usually in kg or lbs.
Phi Deg
Reference formula or conversion factor shown for context.
H M
Vertical extent downward, or thickness of a layer. For tanks: affects pressure at the base (P = ρgh).
Results
passive earth pressure coeff Kp
Reference formula or conversion factor shown for context.
resultant passive force Pp (kN/m)
The final computed result based on the given inputs.
pressure at base (kPa)
The value at the specified point or condition.
Kp/Ka ratio (relative strength)
The proportional relationship between two quantities.
Kp = tan²(45+φ/2)
Sample size or count used in the calculation.
note
Supplementary information explaining an assumption, caveat, or important context for interpreting the result.