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An - Najah National University Civil Engineering Department

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:.

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An - Najah National University Civil Engineering Department

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1. An - Najah National UniversityCivil Engineering Department Design The Water Distribution Network For Raba Village Prepared By: Khalid Said Qassarwi, Osama IsamQubbaj. Supervised by: . Dr. Anan Jayyousi 2011

2. 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.

3. 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.

4. Location of Raba: Qaryut

5. Questionnaire Analysis: Family Study. Age Distribution. level of education . Purchase water.

6. Area before partition:

7. Area after partition:

8. 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).

9. Future water demand: • Growth rate (r) = 3%. • Design Period = 30 years. • Future Population =9,100 Capita. • Water Consumption (according WHO)= 100 L /C.d

10. Future water demand: • UFW: 15%. • Future Demand =118L /C.d • Demand factor = 2.9 • Used Hazen-Williams equation. • Hazen-Williams factor (C) = 120.

11. 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.

12. 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.

13. 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.

14. The results before modified:

15. The results after modified: 7 Results

16. Estimated cost for the Network:

17. 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.

18. Raba Reservoir:

19. 6.1.2 Qusra Reservoir:

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