Description : Explain with neat sketch Phreatic line in earthen dam with pressure head at different point and show construction points of this line.
Last Answer : Procedure for locating the Phreatic line i) Draw an earthen dam having upstream face AB with water surface. ii) On water surface measure distance BC = 0.3 L C is starting pt of base parabola. Let F' ... parabola i.e. Phreatic line. viii) Here G,Q1,Q2,Q3,Q4 and B represent Phreatic line