Question

A unit volume of a mass of saturated soil is subjected to horizontal seepage. The saturated unit wt. is $22kN/m^3$ and the hydraulic gradient is 0.3. The resultant body force on the soil mass is

• A. 1.98 kN
• B. 6.6 kN
• C. 11.49 kN
• D. 22.97 kN

Answer 1

The correct option is D 22.97 kN



Horizontal seepage force ($F_H$) per unit volume,

$=i{\gamma }_w$

$\frac{F_H}{V}=i{\gamma }_w$

$F_H=0.3\times 10$

= 3 kN

$Resultantforce,R=\sqrt{F_H^2+W^2}$

$=\sqrt{3^2+{22}^2}$

= 22.2 kN