Soil Mechanics and Foundation Sheet 24

The lateral earth pressure is

The net ultimate bearing capacity is the maximum net pressure intensity causing shear failure of soil.

For cohesive soils, the height of the retaining wall for zero active earth pressure will be

[c= Cohesion value of soil, $\gamma$= Density of the soil, $\varphi$= Angle of internal friction]

In case of cohesive soils, vertical cuts can be made (without any support) proportional to

The effect of cohesion is to..... the active earth pressure all along the height of a retaining wall.

If $k_0$ is the coefficient of earth pressure at rest, $k_a$ is the coefficient of active earth pressure, $k_p$ is the coefficient of passive earth pressure and $\mu$ is Poisson's ratio, then the value of $\left(1-\mu \right)/\mu$ is given by

The coefficient of active earth pressure is always....... as compared to coefficient of passive earth pressure.

The earth pressure at rest is proportional to $\mu /1-\mu$, where $\mu$= Poisson's ratio of the soil.

The Poisson ratios of soil samples 1 and 2 are ${\mu }_1$ and ${\mu }_2$ respectively and the coefficients of earth pressure at rest for soil samples 1 and 2 are $k_1$ and $k_2$ respectively. If ${\mu }_1/{\mu }_2$= 1.5 and 

A dry sand specimen is put through a triaxial test. The cell pressure is 50 kPa and the deviator stress at failure is 100 kPa. The angle of internal friction for the sand specimen is