Passive Earth Pressure - The Caquot - Kérisel Theory
Passive earth pressure follows from the following formula:
where: | Kp | - | coefficient of passive earth pressure for δ = -φ, see the table |
ψ | - | reduction coefficient ψ for |δ| < φ, see the table | |
c | - | cohesion of soil | |
σz | - | vertical geostatic stress |
The vertical σpv and horizontal σph components of passive earth pressure are given by:
where: | δ | - | |
α | - | back face inclination of the structure |