A concrete dam has the profile shown in figure 4. The dam retains water that is 10 m deep and 5 m wide. Assume the density of water is 1000 kg/m3. Figure 4 Calculate the area of the water against the dam wall. i. ii. Calculate the hydrostatic thrust on the base of dam wall. iii. Calculate the overturning Moment due to water. iv. Calculate the hydrostatic thrust on the base of dam wall if level of water decreased to 7m

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Variation of pressure

From the equation of pressure, pressure is directly proportional to the applied force.