Using the flow net shown below, (1) determine the seepage underneath the 1,000 foot wide concrete dam, and (2) the velocity at point "a*" in feet/hour, where the height of the net's square is 19 feet. The soil has a Gs = 2.67, D10 = 0.01 mm. Overestimate the flow by using Hazen's coefficient C= 15 to determine the permeability k. Ah = 30 feet 5 feet 10

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