The cross section of a levee that is 670 metres long and is underlain by a 2-m-thick permeable sand layer is shown below. It is observed that the quantity of water flowing through the sand layer into the collection ditch is 310 m3/day. Tests were carried out when the temperature was 16.C. The porosity of the sand layer is ti = 0.29 and its specific gravity G: = 2.3.
a. What is the hydraulic gradient from the reservoir to the collection ditch?
b. What is the coefficient of permeability of the soil?
c. What is the absolute permeability of the soil K?
d. What is the seepage velocity v:?
e. What is the void ratio e?
f. What is the water content of the sand layer at saturation?
