Table 1 shows the data for the network of pipes connecting four reservoirs to a common junction, J. Table 1 8fL Reservoir Water Level (m) Reservoir Pipe r = gn²D5 4.0 A 50 AJ 45 BJ 3.0 C 40 CJ 2.0 D 30 DJ 2.0 а) Sketch the pipe network together with the four reservoirs as described above and show the directions of flow based on the initial assumption of the head at the junction J of 41 m. State two hydraulics principles that need to be fulfilled in the analysis of this pipe network. b) Calculate the discharge in each pipe. Compute your answer to two decimal places only.

Problem 2: (a) A pump curve for a pump running at 800 rpm is given by h, =20–4713 Q² , where h, is in meters and Q in cms. What will be the pump curve for the same pump running at 1200 rpm? (b) Find the discharge and head for the pump that is running at 1100 rpm, when the same pump running at 1600 rpm produces head of 75 ft and discharge of 7000 gpm (part (b), is not related to part (a) in any way).

Problem 7 - 64 Determine the flow in each pipe in the figure shown and the elevation of reservoir Cif the inflow to reservoir A is 515 Lit/sec. L El. ? C El. 90 m El. 90 m D 300m - 450 mm t= 0.03 El. 80 m 600m - 600 mm t-0.025 300m - 450 mm f0.03 900m- 450 mm 600m - 450 mm Fx 0.03