CET$238$

Problem: Falling Head Test

$K=\frac{QL}{\text{A}\text{n}\text{t}}$

For a falling head permeability test, these values are given:

Length of the soil specimen $=200mm$

Area of the soil specimen $=1000m{m}^2$

Area of the standpipe $=40m{m}^2$

Head difference at time $t=0$ is $500$ mm

Head difference at time $t=3$min is $300$ mm

Determine:

Hydraulic conductivity of the soil in $c\frac{m}{sec}.$

Head difference at time $t=100sec.$