Soil Mechanics pp 240-273 | Cite as

Lateral Earth Pressure and Design of Retaining Structures

  • G. E. Barnes


The pressure in the pore water in a fully saturated soil is hydrostatic, i.e. uH = uV = u so there is only one value. The pressure within the mineral grain structure (effective stress) is not the same in all directions. The vertical effective stress in a soil can be obtained from simple considerations of depth multiplied by the bulk or submerged unit weight and is treated as a principal stress, σV′. For the design of vertical walls the horizontal stress acting σH′ is required and a coefficient of earth pressure, K is used to relate the two stresses:
$$K = \frac{{{\sigma _{\text{H}}}^\prime }}{{{\sigma _{\text{V}}}^\prime }}$$


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© G. E. Barnes 1995

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  • G. E. Barnes

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