Earth Pressure at Rest for an Inclined Ground Surface or Inclined Back of the Structure
For inclined ground surface behind the structure (0° < β ≤ φ) the earth pressure at rest assumes the form:
where: | φ | - | angle of internal friction of soil |
β | - | slope inclination | |
σz | - | vertical geostatic stress | |
Kr | - | coefficient of earth pressure at rest |
For inclined back of wall the values of earth pressure at rest are derived from:
where: | α | - | back face inclination of the structure |
σz | - | vertical geostatic stress | |
Kr | - | coefficient of earth pressure at rest |
Normal and tangential components are given by:
where: | α | - | back face inclination of the structure |
σz | - | vertical geostatic stress | |
Kr | - | coefficient of earth pressure at rest |
The deviation angle from the normal line to the wall δ reads:
where: | α | - | back face inclination of the structure |
Kr | - | coefficient of earth pressure at rest |