Find the resultant force magnitude and its line of action on

Find the resultant force magnitude and its line of action on a 750-m long dam. The water depth is 50 m, its specific weight is 9800 N/m^3, and phi = 60 degree

Solution

The hydrostatic pressure of the water exerted on the dam surface is given by,

del P = rho * g * h

The specific weight of water is 9800 N/m^3, and replace it with rho*g in the eqn,

del P = rho * g * h

hydrostatic pressure = 9800 * 50 = 4.9 kN / m^2

The component of force acting on the dam wall is P sin 60, which is 4.2435 kN / m2