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QUESTION 2 A water supply company has delivered an annual quantity of 120,000,000 m3 (including leakage) to a city of 1.2 million inhabitants with a mixed industrial- Commercial- residential city in South Africa. The total floor area of an office complex building (non-combustible construction, C = 0.8) is 30 000 mThe leakage from the system estimated at 20% of the total supply, and billed non- domestic consumption of 25 million mⓇly. Assume annual demand growth is 2.8%. Calculate: (a) Water consumption per capita per day (gross and specific) (10) (b) Water consumption rates (use Harmond formula for peak factor) (10) (c) Calculate the demand in 25 years' time. (7 (7) (d) Calculate the required capacity of the pipe distribution system (8)