An-Najah National University Engineering College Civil Engineering Department
An - Najah National University Civil Engineering Department
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An - Najah National University Civil Engineering Department Design The Water Distribution Network For Raba Village Prepared By : Khalid Said Qassarwi, Osama Isam Qubbaj . Supervised by : . Dr. Anan Jayyousi 2011
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An - Najah National University Civil Engineering Department. Design The Water Distribution Network For Raba Village Prepared By: Khalid Said Qassarwi , Osama Isam Qubbaj . Supervised by: . Dr. Anan Jayyousi 2011. The Objective of the Project:. - PowerPoint PPT Presentation
Transcript of An - Najah National University Civil Engineering Department
An - Najah National UniversityCivil Engineering Department
Design The Water Distribution NetworkFor Raba Village
Prepared By :Khalid Said Qassarwi, Osama Isam Qubbaj.
Supervised by: .Dr. Anan Jayyousi
2011
The Objective of the Project:
1-The main objective of this project is to design the water
distribution network for Raba Village with the aid of EPANET.
2- Solve the problem that occurs for purchasing water by tanks.
3- Reduce cost and effort.
Study Area
- Raba is located 12 km to South east of the city of Jenin in the northern part of west Bank.
- Raba is hilly village elevated about 500 m above mean sea level.
- The area of Raba is about 25,642 Dunums.
- Topographically, the village is a level area.
- Raba has a population of about 3,750 inhabitants.
Location of Raba:
Qaryut
Questionnaire Analysis:
Family Study. Age Distribution.
level of education . Purchase water.
Area before partition:
Area after partition:
Existing Water demand:
Population = 3,750 capita.
Area = 25,642 Dunums.
Density of the Population = 2.5 C/dunums.
Consumption = 75L/C.d
UFW = 25%. (assumption).
Future water demand:
Growth rate (r) = 3%.
Design Period = 30 years.
Future Population =9,100 Capita.
Water Consumption (according WHO)= 100 L /C.d
Future water demand:
UFW: 15%.
Future Demand =118L /C.d
Demand factor = 2.9
Used Hazen-Williams equation.
Hazen-Williams factor (C) = 120.
Design Criteria:
Head pressure should be not more than 100 m, and not less than 20m.
Maximum velocity should not be greater than 3m/sec, and minimum velocity should not be less than 0.1m/sec.
The Results:
- The first result is high pressure, and low velocity.
- from the above result ,we conclude that the diameter is over sizing, and it should be reduced.
-The pipes were reduced from 6` ,4` ,3` to 4` ,3`, 2` respectively.
- Some pipes reduced from 2` to 1`. The results is acceptable is acceptable the design criteria, and these result as the following:- The Pressure:
All the pressure in the pipes is acceptable .which range between (22.31-95.93m).
- The velocity:
Most of the velocities are within range, but some nodes in the end of the network are low(0.06m/s), but in general the velocity is acceptable.
The results after modified:
The results is acceptable the design criteria, and these result as the following:
- The Pressure:
All the pressure in the pipes is acceptable .which range between (22.31-95.93m).
- The velocity:
Most of the velocities are within range, but some nodes in the end of the network are low(0.06m/s), but in general the velocity is acceptable.
The results before modified:
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Results
The results after modified:
Estimated cost for the Network:
Diameter (inch)
Unit Quantity Unit Price ($/m)
Total Cost (m)
1 L.M 5064 20 101280
2 L.M 6155 28 172340
3 L.M 1020 45 45900
4 L.M 1215 52 63180
Total 382700
Information about the project
- The pumping is continuous.
- The project period is one year.
- The water is distributed by the gravity.
- The reservoir capacity is 500m3.
- The project is near completion, and will start in house connections.
Raba Reservoir:
6.1.2 Qusra Reservoir:
