House connection from mains, laying and joints in pipes
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The document discusses the components of a house water connection system including the ferrule, goose neck, service pipe, stop cock, and water meter. It then provides details on pipe fittings, storage systems, and piping layouts for direct supply, overhead tanks, and pumped systems. Joint types for cast iron pipes are covered, including socket and spigot, flanged, mechanical, flexible, and expansion joints. Disinfection of pipelines is also mentioned.
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House connection from mains, laying and joints in pipes
- 1. House connection from mains , laying and joints in pipes
- 2. HOUSE WATER CONNECTION ¤ Ferrule ¤ Goose neck ¤ Service pipe ¤ Stop cock ¤ Water meter
- 3. ferrule • Right angled sleeve made of brass and gun metal • Size: 10 to 50 mm dia
- 5. Goose neck • Small curved pipe made of flexible material • Length : about 75mm • Forms flexible connection between the water main and the service pipe
- 6. Service pipe • Galvanized iron pipe of size less than 50mm dia • Laid underground • Connected to main through ferrule and goose neck
- 7. Stop cock • Screw down type valve used for stopping and opening water supply • Generally provided before the water enters the water meter • Also provided inside the building
- 10. Water meter • Measures and records the quantity of water consumed • Generally fixed in an iron box fitted in an opening or cavity and covered with movable iron cover • 2 types : Velocity meters Positive meters
- 13. diaphragm • A flexible, pressure responsive element that transmits force to open, close or control a valve • Repairs can be made without interrupting pipe line Diaphragm valve
- 15. Pipe Fittings • Bends • Crosses • Tees • Elbows • Wye
- 16. • Plugs • Flanges • Caps • Reducer
- 17. Water taps • Types of valves provided at the end of house service for withdrawing water • Most common – bib cocks
- 20. Storage of water in buildings • Necessary as municipal supplies are not available throughout the day • Helps to meet static fire demand • Provide uninterrupted supply in case of repair or power failures
- 21. • Helps to supplement direct municipal supply in case of excess or peak demand
- 22. The water storage capacity of buildings depend upon : • Hours of supply • Rate of supply • Demand pattern in the building • Fire storage required
- 23. The types of water storage required in buildings are : • Overhead storage • Underground storage
- 24. Water piping system in building • Piping system using direct supply • Piping system using overhead tanks • Piping system using under- ground- overhead tank supply • Pumped system
- 25. • Other system – Continuous running system
- 26. Piping system using direct supply
- 27. Piping system using overhead tanks
- 28. Piping system using under-ground- overhead tank supply
- 30. Pumped system
- 31. Other system- Continuous running system
- 32. Disinfection of pipe line before use • Keeping pipes full with water and adding in chlorine • Flushing away the residue by treated water
- 33. Cast Iron ( C.I) Pipes • Widely used for city water supplies • Length – about 3.5m • Moderate in cost • Easy to join • Strong and durable
- 34. • Corrosion resistant • Long life up to 100 years • Service connections can be easily made
- 35. Joints in c.i pipes Types of joints – Socket and spigot joint – Flanged joint – Mechanical joint called dresser coupling – Flexible joint – Expansion joint
- 36. Socket and spigot joint • Also called bell and spigot joint • Enlarged end- socket • Normal end- spigot • Flexible joint • Allows pipes to be laid on flat curves
- 38. Flanged joint • Used where occasional disjoint of pipes are required • Strong • Cannot be used where deflections and vibrations are expected • Expensive
- 40. Mechanical joint • Also called dresser coupling • To join plain end of cast iron pipe • Metallic collar is fitted • Strong • Withstand vibrations
- 42. Flexible joint • Used when large scale flexibilities are required • Spherical socket • Plain spigot having a bead at the end
- 44. Expansion joints • Provided at suitable intervals to counteract the thermal stresses produced due to temperature variations • Socket end is flanged and spigot end is plain
- 47. Thank you