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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 the 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

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