A pipe network is given below (Figure 2). All pipes are 1 km long, and 500 mm in diameter, with friction factor of 0 018 Determine the following. a) The value of Q (3) b) The correct flows in each pipe (using the Hardy-cross method) after the first iteration [Hint: Assume Qo for pipe AB = 105 L/s] (17) c) The pressure heads at each node if the pressure head at reservoir A is 80 m. The elevation of each node is provided in Table 2. Assume friction factor of 0 018 for all pipes Ignore all minor losses. (7) X 060 B 020 40L/s Table 2: 30L/s Pipe Elevation 50L/s (m) A 30 B 25 C 30 40L/s D 30 E 25 F 30 Figure 1. Pipe network (Q 4)