Problem $1(12$ Points$)$

Refer to Fig. $1,$

a$)$ What is the direction of water flow and why?

b$)$ Calculate the seepage rate.

c$)$ Draw the total and effective vertical stress, and water pressure diagrams as given in Fig. $1.$

d$)$ Assuming no water flow $($static case$),$ draw the total and effective vertical stress and water pressure diagrams.

Fig. $1$