Question

If ${\sigma }_h,{\sigma }_v,{\sigma }_h^{\prime }and{\sigma }_v^{\prime }$ represent the total horizontal stress, total vertical stress, effective horizontal stress and effective vertical stress on a soil element, respectively. The coefficient of earth pressure at rest is given by

• A. $\frac{{\sigma }_h}{{\sigma }_v}$
• B. $\frac{{\sigma }_h^{\prime }}{{\sigma }_v^{\prime }}$
• C. $\frac{{\sigma }_v}{{\sigma }_h}$
• D. $\frac{{\sigma }_v^{\prime }}{{\sigma }_h^{\prime }}$

Answer 1

The correct option is B $\frac{{\sigma }_h^{\prime }}{{\sigma }_v^{\prime }}$

Coefficient of earth pressure at rest = $\frac{{\sigma }_h^{\prime }}{{\sigma }_v^{\prime }}$