Week 06 lecture 06 water connection

water connections

1. BUILDING SERVICES-II (PLUMBING) AR. HENA TIWARI ASSISTANT PROFESSOR GCAD (JAN-JULY 2018) LECTURE-VI WATER CONNECTION

2. HOUSE WATER CONNECTION Ferrule Goose neck Service pipe Stop cock Water meter FERR U LE Right angled sleeve made of brass and gun metal Size: 10 to 50 mm dia

3. GOOSE NECK Small curved pipe made of flexible material Length : about 75mm Forms flexible connection between the water main and the service pipe

4. SERVICE PIPE OR COMMUNICATION PIPE Galvanized iron pipe of size less than 50mm dia Laid underground Connected from meter to main via ferrule and goose neck.

5. STOP COCK Screw down type valve used for stopping and opening water supply Generally provided before water enters the water meter It is also provided inside the building

6. 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

7. SOME COMMON TERMS: SOIL PIPE: A soil pipe is a pipe through which human excreta flows. WASTE PIPE: It is a pipe which carries only the waste water, such as that from a sink, bath, or shower. It does not carry human excreta . DRAINAGE

8. VENT PIPE: It is a pipe which is provided for the purpose of the ventilation of the system. A vent is open at top and bottom, to facilitate exit of foul gases. It is carried at least one meter higher than the roof level. RAIN WATER PIPE: It is a pipe which carries only the rain water. ANTI-SIPHONAGE PIPE: It is pipe which is installed in the house drainage to preserve the water seal of traps.

9. SIZES OF PIPES SOIL PIPE:100-150MM WASTE PIPE: HORIZONTAL: 30-50MM WASTE PIPE: VERTICAL: 75MM RAINWATER PIPE: 75-100MM VENT PIPE: 50MM ANTI SIPHONAGE PIPE: CONNECTING SOIL PIPE: 50MM CONNECTING WASTE PIPE: 40MM

10. OBJECTIVES OF DRAINAGE SYSTEM To maintain healthy conditions in the building. To dispose off waste water as early and quickly as possible. To avoid the entry of foul gases from the sewer or the septic tank. To facilitate quick removal of foul matter. To collect and remove waste matter systematically .

11. SANITARY FITTINGS-TRAPS Traps are defined as fittings at the end of soil pipes or waste pipes to prevent foul gases coming out of the soil pipe/ waste pipe .

12. INTRODUCTION Traps are an integral part of a modern sanitary system, being designed to retain a small quantity of the waste water from the discharge of fitting to which they are attached as a barrier to prevent foul air entering the building .

13. Traps should be self-cleaning, that is to say , they should be designed so that their walls are scoured by the discharging water. One of the advantages of modern traps constructed of plastic materials is the ease with which they may be dismantled for cleaning.

14. CLASSIFICATION OF TRAPS Depending upon the shapes the traps are classified as: P-trap Q-trap S-trap Above three types of traps are shown in the following figures. The depth of a trap seal would depend upon the usage of a pipe. The trap seal varies from 25 to 100 mm deep.

15. FLOOR TRAP (NAHANI TRAP) These are provided in floors to collect waste water from kitchen sinks, bathroom floors, washing floors etc. It is the starting point of flow of waste flow. It is made of cast iron or PVC. Depth of water seal should not less than 40mm. OTHER TRAPS

16. GULLY TRAP The gulley trap is usually provided at the junction of main waste pipe and the floor waste pipe. They are provided near the external face of wall. This is a deep seal trap of about 60-70mm.

17. INTERCEPTING TRAPS It is provided at the last manhole i.e. at the junction of House drain and the Public Sewer. It is made of an inspection arm for the purpose of cleaning or inspection. It is also known as inspection chamber. The water seal is not less than 100mm.

18. BOTTLE TRAP Generally placed in wall hanging type of WB’s & Sinks.