Question 1: Water Distribution (Total 20 marks) The below diagram shows a schematic layout of a dead-end system comprisi

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Question 1 Water Distribution Total 20 Marks The Below Diagram Shows A Schematic Layout Of A Dead End System Comprisi 1 (64.32 KiB) Viewed 34 times

Question 1: Water Distribution (Total 20 marks) The below diagram shows a schematic layout of a dead-end system comprising of a trunk main A-B-C supplying four peincipl mains from a service reservoir. The water demands for each of the four areas serviced by the principl mains are indicated at nodes D, E, F and G. Reduced levels (RLs) are indicated for all the nodes. Pipe lengths are indicated next to each pipe. You can use either the hydraulic design chart or Darcy-Weisbach equation (1 = 0.016) for all calculation. Note: use Colebrook-White chart (K = 0.6 mm) as your hydraulic design chart. 60 \ 75 l/s G (RL=90m) E (RL=130m) Lco -2.0km Lee - 1.2km C (RL=106m) Lec - 5.0km B (RL=140m) LAB = 6.0km Reservoir Water Level at RL=200m Lcf = 1.5km LBD = 2.5km F (RL=100m) 45 Vs D (RL=120m) (30 1/8 a) Determine suitable pipe sizes so that the pressure head availability at any node doesn't drop below 25 m when the full demand to all areas is delivered simultaneously. b) Using the pipe sizes, you calculated in part (a), calculate the pressure head available at node "C", if the draw-off at all other nodes is zero and water is withdrawn only at node "C" at a rate of 50 l/s.