Exercise $6-1$

Consider the simplified apparatus shown in Figure $1$; the pressure heads at top and bottom of the sample are determined by inflow and outflow levels. A constant head permeability test was carried out using a sand sample with the following parameters:

Diameter $=0\mathrm{.}5m,$sat$=19k\frac{N}{m^3},k=6{10}^{-1}c\frac{m}{s}.$

Point $C$ is in the middle of the soil sample.

a$.$ Considering that point $A$ is $2m$ above point $D,$ calculate the elevation head, the pressure head and the total head for points $B,C,D$ and $E.$

b$.$ Determine the total and effective vertical stresses at point C$.$

c$.$ In an experiment the total flow is $0\mathrm{.}002\frac{m^3}{s}.$ Determine the elevation head at point A for that experiment.