10-4. Trial-and-Error Solution for Hydraulic Drainage. In a hydraulic project a cast-iron pipe having an inside diameter of 0.156m and a 305m length is used to drain wastewater at 293K. The available head is 4.57m of water. Neglecting any losses in fittings and ioints in the pipe, calculate the flow rate in m3/s. (Hint: Assume the physical properties of pure water. The solution is trial and error, since the velocity appears in NRe, which is needed to determine the friction factor. As a first trial, assume that v=1.7m/s