Question

A certain soil has the following properties, $G_s=2.71,n=40$% and $w=20$% .The degree of saturation of the soil rounded off to the nearest percentage is _______ .

• A. 81

Answer 1

The correct option is A 81
$G_s=2.71$

n = 40%

w = 20%

$Weknowthat,eS=W{G}_s$

$\Rightarrow S=\frac{w{G}_s}{e}$

$e=\frac{n}{1-n}=\frac{0.4}{0.6}$

$\Rightarrow S=\frac{0.2\times 2.71}{\frac{0.4}{0.6}}=0.813$
Degree of saturation is 81.3%, Ans is 81% .