The coefficient of permeability below a dam is 4m/day. The water on the upstream side is 20m higher than on the downstream side. To estimate the seepage below the dam, a flownet was graphically drawn such that the number of potential drops Nd=10 and number of flow channels Nf=4. The base of the dam is founded 1m below the ground. Between the heel and the toe of the dam, a distance of 30m, there are 8 potential drops.  Evaluate the seepage flow per meter width of the dam in liters per minute. Determine the uplift pressure at the heel of the dam in kPa

Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
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Chapter8: Stresses In A Soil Mass
Section: Chapter Questions
Problem 8.14P
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The coefficient of permeability below a dam is 4m/day. The water on the upstream side is 20m higher than on the downstream side. To estimate the seepage below the dam, a flownet was graphically drawn such that the number of potential drops Nd=10 and number of flow channels Nf=4. The base of the dam is founded 1m below the ground. Between the heel and the toe of the dam, a distance of 30m, there are 8 potential drops. 

Evaluate the seepage flow per meter width of the dam in liters per minute.

Determine the uplift pressure at the heel of the dam in kPa.
 
Determine the uplift pressure at the toe of the dam in kPa.
 
 
 
 
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