Flow net
For a two-dimensional seepage under an impervious dam with apron (Fig. 3.1), the boundary conditions are:
(a) Calculate the seepage flow rate.
(b) In absence of the cutoff wall, sketch the flow net and determine the seepage flow.
Determine the pressure distribution along the base of the dam and beneath the apron. Calculate the uplift forces on the dam foundation and on the apron.