1.Two pipelines of equal length and diameters 15 cm and 10 cm respectively connect two reservoirs such that the pipelines are in parallel. The difference in water levels in the reservoirs is 3 m. If the friction is assume to be equal, the ratio of discharge in the 15 cm diameter pipe to 10 cm diameter pipe is what?
2.Determine the stopping sight distance for a 5-lane, 2-way highway with a 4.5% grade. The wet coefficient of friction is 0.30 and the design speed is 55mph. The road is abutted by an elementary school with considerable pedestrian traffic. Winter weather is often a problem with temperatures getting into negative numbers.