Two materials (wrought iron, ks ¼ 0.046 mm, and galvanized iron, ks ¼ 0.15 mm) are being considered for a new pipeline. The expected discharge is 0.15 m3 /s. Both the headloss and cost are sought for....

Two materials (wrought iron, ks ¼ 0.046 mm, and galvanized iron, ks ¼ 0.15 mm) are being considered for a new pipeline. The expected discharge is 0.15 m3 /s. Both the headloss and cost are sought for. Wrought iron pipe costs 5 cents more than the galvanized iron pipe for every meter length of the pipe. Determine the tradeoff between the cost and the energy head for pipe diameters of 200 mm and 150 mm. Take the temperature as 15C.