Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
ASSESSMENT OF URBAN WATER SUPPLY AND DEMAND: THE CASE OF TARE TOWN
In this research Tare Town existing water supply, demand, and hydraulic performance of the water supply system components were assessed. The main objective is to investigate the system problems and supply and demand gap, and predict future water demand to provide clear information that lead to remedial solution. Different empirical formulas, Water CAD software and Microsoft excel sheet were used as tool to perform existing water supply, water distribution system hydraulic performance and water demand analysis. The results of velocity and pressure were used as tool to evaluate the hydraulic performance of water distribution network by comparing it with standard maximum and minimum velocity and pressure of the urban water supply distribution system; and demand and supply gap was used to evaluate water shortage prevailing in the town. Water CAD analysis results showed violation of maximum and minimum velocity and pressure requirements i.e. velocity in the system ranges from 3.43m/s to 6.4m/s which is very high beyond maximum and minimum limit and pressure at almost all junction is negative which displayed the inefficient hydraulic performance of the existing water distribution network. Along with this, the existing water supply and demand gap 7.94l/s or 685.5m3/d illustrated big water shortage in the town. The problems showed by the analysis result were very little water supply source, old water supply system components, existing water supply system covered only small part of the town, undersized pipes, small capacity and low elevated storage facility and improper design of the whole system. Moreover the water supply system has no independent administration and operation institution. Therefore the new water supply system for the whole town should be designed and constructed to satisfy the very high water demand of the town. Hence based on the prediction of the future 20 years demand; source of minimum 36.58l/s should be supplied to the town. In addition, pressure line for 36.58l/s and distribution pipe network for 73.16l/s that covers all the part of the town according to master plan, enough head and discharge pumps for 36.58l/s that can make water reach the storage facility and 2,150m3 capacity-elevated tank that can supply water to all parts of the town should be designed and constructed for the next 20 years. Furthermore independent institution that comprises appropriate administrative and technical professionals has to be established.
ASSESSMENT OF URBAN WATER SUPPLY AND DEMAND: THE CASE OF TARE TOWN
In this research Tare Town existing water supply, demand, and hydraulic performance of the water supply system components were assessed. The main objective is to investigate the system problems and supply and demand gap, and predict future water demand to provide clear information that lead to remedial solution. Different empirical formulas, Water CAD software and Microsoft excel sheet were used as tool to perform existing water supply, water distribution system hydraulic performance and water demand analysis. The results of velocity and pressure were used as tool to evaluate the hydraulic performance of water distribution network by comparing it with standard maximum and minimum velocity and pressure of the urban water supply distribution system; and demand and supply gap was used to evaluate water shortage prevailing in the town. Water CAD analysis results showed violation of maximum and minimum velocity and pressure requirements i.e. velocity in the system ranges from 3.43m/s to 6.4m/s which is very high beyond maximum and minimum limit and pressure at almost all junction is negative which displayed the inefficient hydraulic performance of the existing water distribution network. Along with this, the existing water supply and demand gap 7.94l/s or 685.5m3/d illustrated big water shortage in the town. The problems showed by the analysis result were very little water supply source, old water supply system components, existing water supply system covered only small part of the town, undersized pipes, small capacity and low elevated storage facility and improper design of the whole system. Moreover the water supply system has no independent administration and operation institution. Therefore the new water supply system for the whole town should be designed and constructed to satisfy the very high water demand of the town. Hence based on the prediction of the future 20 years demand; source of minimum 36.58l/s should be supplied to the town. In addition, pressure line for 36.58l/s and distribution pipe network for 73.16l/s that covers all the part of the town according to master plan, enough head and discharge pumps for 36.58l/s that can make water reach the storage facility and 2,150m3 capacity-elevated tank that can supply water to all parts of the town should be designed and constructed for the next 20 years. Furthermore independent institution that comprises appropriate administrative and technical professionals has to be established.
ASSESSMENT OF URBAN WATER SUPPLY AND DEMAND: THE CASE OF TARE TOWN
TEFERA MAMMO ZEWDIE (Autor:in)
18.10.2019
doi:10.20372/nadre/4273
Hochschulschrift
Elektronische Ressource
Englisch
DDC:
690
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