The flow rate in a 200-mm diameter pipeline connecting two reservoirs is 30 L/s. The pipeline consists of 600 m of straight pipe, a sharp-edged entrance, two 90 long radius bends, and a sudden enlargement exit. The absolute roughness of the pipe is 0.25 mm. Determine the difference in the water surface elevation of the two reservoirs. Use the equivalent length method for finding the minor losses. 1 d.p.