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In order to simulate the hydraulic model for the existing water network, several hydraulic and physical parameters were required as input parameters in the model. These parameters were water flow rate, pipe size and slope, pipe material and operational condition of the existing water supply system. These parameters were obtained from the AADC. Figure 2 shows the water distribution mains in the study area. The pipe lengths and pipe sizes are essential for adequate simulation of the existing water DN. The total pipe lengths of the existing water network were calculated to be 8,042.23 metres. The DN pipe of size 150 mm, 200 mm and 300 mm has a total length of 7,539.95 metres, 422.8 metres and 79.48 metres, respectively. Ductile iron (DI) pipes were used in the DN. Table 4 shows different DN pipe segments (pipe IDs are shown in Figure 2) and their corresponding sizes, lengths and their flow rate scenarios. Similar to the pipe length, the elevation data of existing pipelines were also collected from the AADC, supplied as the built profile drawings. The laid pipelines’ elevation details at each junction were recorded and marked with a unique junction ID (Figure 2) in order to be used in the hydraulic modelling.
Table 4

Details of pipes, their ID and junction elevation (Source: AADC)

Junction demand, litre/second (L/sec)
 
Node IDElevation (m)Scenario-1Scenario-2Scenario-3Remarks
DMA 241.232 0.000 0.000 0.000 Boundary node 
J-1 241.525 0.000 0.000 0.000 T-junction 
J-2 242.522 0.000 0.000 0.000 Reducer 200 × 150 
J-3 242.533 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-4 243.459 0.000 0.000 0.000 Elbow 
J-5 243.751 0.000 0.000 0.000 Elbow 
J-6 240.845 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-7 240.839 0.000 0.000 0.000 Reducer 200 × 150 
J-8 239.261 0.000 0.000 0.000 Elbow 
J-9 238.716 0.000 0.000 0.000 Elbow 
J-10 237.496 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-11 237.810 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-12 237.881 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-13 238.330 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-14 241.174 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-15 241.174 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-16 241.431 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-17 241.471 0.000 0.000 0.000 Elbow 
J-18 242.765 0.000 0.000 0.000 Elbow 
J-19 243.165 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-20 242.790 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-21 242.700 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-22 245.508 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-23 245.618 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-24 245.618 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-25 242.199 1.72 L/sec 1.63 L/sec 1.55 L/sec  
Junction demand, litre/second (L/sec)
 
Node IDElevation (m)Scenario-1Scenario-2Scenario-3Remarks
DMA 241.232 0.000 0.000 0.000 Boundary node 
J-1 241.525 0.000 0.000 0.000 T-junction 
J-2 242.522 0.000 0.000 0.000 Reducer 200 × 150 
J-3 242.533 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-4 243.459 0.000 0.000 0.000 Elbow 
J-5 243.751 0.000 0.000 0.000 Elbow 
J-6 240.845 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-7 240.839 0.000 0.000 0.000 Reducer 200 × 150 
J-8 239.261 0.000 0.000 0.000 Elbow 
J-9 238.716 0.000 0.000 0.000 Elbow 
J-10 237.496 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-11 237.810 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-12 237.881 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-13 238.330 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-14 241.174 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-15 241.174 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-16 241.431 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-17 241.471 0.000 0.000 0.000 Elbow 
J-18 242.765 0.000 0.000 0.000 Elbow 
J-19 243.165 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-20 242.790 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-21 242.700 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-22 245.508 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-23 245.618 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-24 245.618 1.72 L/sec 1.63 L/sec 1.55 L/sec  
J-25 242.199 1.72 L/sec 1.63 L/sec 1.55 L/sec  
Figure 2

Layout of EPANET junctions and pipes.

Figure 2

Layout of EPANET junctions and pipes.

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