Refer to Figure 9.4a. Given: H1 = 1 m, H2 = 2 m, h = 1.2 m, void ratio of sand (e) = 0.55, specific gravity of soil solids (Gs) = 2.68, area of the tank = 0.5 m2, and hydraulic conductivity of sand = 0.1 cm/sec.

a. What is the rate of upward seepage?

b. If h = 1.2 m, will boiling occur? Why?

c. What should be the value of h to cause boiling?

Figure 9.4a

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H H2 Valve (open) Inflow - H H2 Valve (open) Inflow -