Answer Happy

2. Water Supply Network (a) A water supply system delivers potable water from the water treatment plants to households. Discuss in detail the requirements of a water supply network for a new housing estate development. [5 marks] (b) The water supply pipe network shown in Figure Q2 represents a spray rinse system with details on initial flow and characteristic of each pipe. Find the water flow rates in each pipe after one iteration by using the Hardy-Cross method. Take the diameter of all pipes as 300 mm. Hint: Use the Darcy-Weisbach equation to determine the friction loss for pipe flow. Assume f = 0.005 and neglect all separation losses (i.e. entry and exit losses) for all pipes. [20 marks] Continued on the next page 3 CIVE3070 CIVE3070 20 l/s 400 m 300 m A 55 l/s D с - NOT TO SCALE - 100 l/s Figure Q2 for use in Question 2(b). 30 l/s 5 l/s 45 l/s B 20 l/s 50 l/s 30 l/s