Question

What is the intensity of active earth pressure at a depth of 10.0 m in dry sand with an angle of shearing resistance of ${30}^{\circ }$ and unit weight of $18kN/m^3$?

• A. $50kN/m^2$
• B. $60kN/m^2$
• C. $70kN/m^2$
• D. $80kN/m^2$

Answer 1

The correct option is B $60kN/m^2$

The intensity of active earth pressure is given by
$p_a=K_a\times \gamma \times H=\left(\frac{1-\sin {30}^{\circ }}{1+\sin {30}^{\circ }}\right)\times 18\times 10=60kN/m^2$