Question

The value of active earth pressure coefficient for a cohesion less soil having effective angle of internal friction ${40}^{\circ }$ is . (Round upto three decimal places)

• A. 0.384
• B. 0.217
• C. 0.584
• D. 1.5

Answer 1

The correct option is B 0.217

$Given,\varphi ={35}^{\circ }$
$Activepressurecoefficient,K_a=\frac{1-sin\varphi }{1+sin\varphi }$

$=\frac{1-sin{40}^{\circ }}{1+sin{40}^{\circ }}$

$=0.217$