Suppose there is a problem with the exit gradients. as in Problem 7-45. One solution would be to place a horizontal filter over the soil where the water exit
Problem 7-45
Assume a row of sheet piles as shown in Fig. Ex. 7.21a. The total thickness of the soil layer is 20 m, while the difference between the head and tailwater is 10 m. Plot a graph showing how the flow under the sheet pile varies when the depth of the sheet pile goes for 8 m and approaches 20 m. Ignore problems associated with the exit gradient