I have to check the stability of excavation with 1.5h: 1v cut-slope and 100 feet feet from the river bed (on top). I am trying to perform seepage analysis using flow net. Most of books give example for equal level of bottom height (earth dam). I appreciate for suggestion how can i use same method for my case where bottom of u/s and d/s level are on different level. My main concern is construction of phreatic line.
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