// multi-utility computation suite · offline · instant · precise
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eng.lateral-earth-pressure-Rankine Calculator
Calculates active and passive earth pressure coefficients using Rankine's theory for cohesionless soil with horizontal surface. Rankine active earth pressure assumes the wall moves away from the soil sufficiently to mobilise full shear strength — Ka = tan²(45 − φ/2).
Inputs
Phi Deg
Reference formula or conversion factor shown for context.
Gamma Kn M3
Body or object weight. For health calculators, usually in kg or lbs.
H M
Vertical measurement. For health calculators, typically standing height without shoes.
C Kpa
Reference formula or conversion factor shown for context.
Results
active earth pressure coefficient Ka
Sample size or count used in the calculation.
passive earth pressure coefficient Kp
Sample size or count used in the calculation.
active lateral force Pa (kN/m)
The value at the specified point or condition.
passive lateral force Pp (kN/m)
The value at the specified point or condition.
Ka = tan²(45-φ/2)
Sample size or count used in the calculation.
critical depth zc (tension crack)
The tensile force or stress — the pulling force that stretches the material. Must stay below the material's tensile strength.