WATER SUPPLY AND DISTRIBUTION SYSTEM.pptx

Technical drafting

1. WATER SUPPLY AND DISTRIBUTION SYSTEM

2. Water Supply and Distribution System It is defined as water supply from water source, street main or a pump to the building and to the various points in the building or residential area at which water is used.

3. SOURCES OF WATER 1. rain water - collected from roofs of the buildings, houses and special water sheds and stored in cisterns or ponds. - Water is soft and pure and it is suitable for the hot water supply system.

4. DISADVANTAGE OR RAINWATER only a source during wet season or rainy season storages become breeding place for mosquitoes roofs may not be clean

5. 2. GROUND WATER -t he portion of the rainwater which has percolated into the earth to form the underground deposits . 

6. Advantages: usually has an abundant supply requires less treatment because of natural filtering Dis-advantages may have organic matter and chemical elements usually treatment is suggested

7. 3. N atural S urface W ater A mixture of surface run-off and ground water. Surface sources includes rivers, lakes, ponds, and impounding reservoirs.

8. Advantages: usually easy to acquire and in large quantities used for irrigation, industrial purposes, and when treated for community water supply Disadvantages: contains a large number of bacteria, organic and inorganic substances; purification and treatment is necessary

9. 4. WATER MAIN refers to the public sewer system along the streets, or laid underground where the service to the house is connected. Water coming from it is under pressure but normally could serve only houses of moderate house

10. ACTIVITY 1. WHAT IS THE IMPORTANCE OF KNOWING OUR SOURCES OF WATER? 2. GIVE 5 PRACTICAL WAYS ON HOW WE CAN TAKE GOOD CARE OF OUR WATER SOURCES.

11. PARTS OF THE WATER DISTRIBUTION SYSTEM 1. SERVICE PIPE - THE PIPE FROM THE WATER MAIN OR OTHER SOURCE OF POTABLE WATER SUPPLY TO THE WATER DISTRIBUTION SYSTEM OF THE BUILDING SERVED.

12. 2. WATER METER DEVICE USED TO MEASURE IN LITERS OR GALLONS THE AMOUNT OF WATER THAT PASSES THROUGH THE WATER SERVICE.

13. 3. DISTRIBUTION PIPE/SUPPLY PIPE a pipe within the structure or on the premises which convey water service pipe or meter to the point of utilization.

14. 4. RISER a water supply pipe that extends one full story or more to convey water to branches or to a group of fixtures.

15. 5.FIXTURE BRANCH the water supply pipe between the fixture supply pipe and the water distributing pipe.

16. 6. FIXTURE SUPPLY a water supply pipe connecting the fixture with the fixture branch.

17. WATER STORAGE FOR DOMESTIC USE 1.Overhead tank / gravity supply tank – does not have any pressure concern but relies on gravity to supply water to fixtures below.

18. 2. Pneumatic Water tank used in the air pressure system and often used with a pump. Make use of pressure relieve valve to release excess pressure if necessary.