Coefficient of earth pressure at rest is given by :a)Dry densityb)Rat...
Sometimes it is also defined as the neutral lateral earth pressure or the lateral earth pressure at consolidated equilibrium. The ratio of lateral to vertical earth pressure in this “no lateral strain” condition is termed the coefficient of earth pressure at rest, K0 = σ3/σ1.
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Coefficient of earth pressure at rest is given by :a)Dry densityb)Rat...
Coefficient of Earth Pressure at Rest
The coefficient of earth pressure at rest is a measure of the lateral pressure exerted by soil at rest against a retaining structure. It is defined as the ratio of the horizontal force acting on the soil to the vertical force pressing the soil particles together. The coefficient of earth pressure at rest is denoted by K0 and is an important parameter in the design of retaining walls and foundations.
Factors Affecting Coefficient of Earth Pressure at Rest
The coefficient of earth pressure at rest is affected by several factors, including:
- Dry density: The dry density of soil is a measure of the mass of soil per unit volume, without any water content. It is one of the key factors affecting the coefficient of earth pressure at rest.
- Rate of loading: The rate of loading refers to the speed at which a load is applied to the soil. It is another factor that affects the coefficient of earth pressure at rest.
- Confining pressure: Confining pressure is the pressure exerted on the soil from all sides. It is a third factor that affects the coefficient of earth pressure at rest.
Therefore, the correct answer to the given question is option 'D', i.e., all the above factors affect the coefficient of earth pressure at rest.