Question

A soil has a discharge velocity of $6\times {10}^{-7}m/s$ and a void ratio of 0.5. Its seepage velocity is

• A. $18\times {10}^{-7}m/s$
• B. $12\times {10}^{-7}m/s$
• C. $6\times {10}^{-7}m/s$
• D. $3\times {10}^{-7}m/s$

Answer 1

The correct option is A $18\times {10}^{-7}m/s$

$Porosity=\frac{e}{1+e}=\frac{0.5}{1.5}=\frac{1}{3}$

$Seepagevelocity=\frac{Dischargevelocity}{Porosity}$

$=\frac{6\times {10}^{-7}}{\left(1/3\right)}=18\times {10}^{-7}m/s$