Q: The concrete dam shown in Figure is constructed on a soil with coefficient of permeability k = 0.06 cm/sec and ysat 19.8 kN/m³. Determine: 1- rate of flow (m/day) per meter run of the wall. 2- total head, elevation head, and pressure head at point A. 3- effective stress at point B. 4- hydraulic gradient at point D. 5- exit gradient. 6- depth of water outside the dam which cause instability at point C. 25 m 1.5 m 1= 1.2 m 8 m G.S.L A 9 m 8 m B Datum Rock 00

6. Determine the critical height of the water level that causes the concrete gravity dam to be on the verge of tipping over. Assume water also seeps under the base of the dam and produces a uniform pressure under the dam. The density of concrete is pc = 2400 kg/m³. Hint: Work the problem using a 1-m width of the dam. 18 m h -6m

Q: The concrete dam shown in Figure is constructed on a soil with coefficient of permeability k = 0.06 cm/sec and ysat= 19.8 kN/m. Determine: 1- rate of flow (m/day) per meter run of the wall. 2- total head, elevation head, and pressure head at point A. 3- effective stress at point B. 4- hydraulic gradient at point D. 5- exit gradient. 6- depth of water outside the dam which cause instability at point C. 25 m 1.5 m 1= 1.2 m 8 m G.S.L XX WAY A 9 m D. 8 m B Datum AVAEN Rock