Friday, 29 June 2018

Municipal Rules Regulation House Sewer Connection with The Street Main Sewer

Municipal Rules Regulation House Sewer Connection with The Street Main Sewer

The following principles and municipal rules are adopted for efficient drainage system:
1) The lavatory blocks should be so located that the length of drainage line is minimum .At least one wall of the lavatory block should be an outside wall to facilitate the fixing of soil and vent pipes.

2) For better maintenance and easy repairs, the house sewer pipes should preferable be laid by the side of building .It should not be laid below building or in walls.

3) All drains and sewer pipes should be aligned straight between successive inspection chamber or manhole .All junctions should be oblique and contained angle should not exceed 45° .

4) The lateral sewer and drains should be laid at sufficient slopes so as to develop self-cleaning velocity.


Municipal Rules Regulation House Sewer Connection with The Street Main Sewer
5) The size of drain or sewer should be sufficient.

6) To avoid back-flow and inefficient building drainage, the house sewer should be connected to the public sewer in such a way that the out fall level of the house sewer is sufficient higher than the water level of the public sewer .

7) The plumbing system should contain enough number of traps at suitable points .

8) Intercepting trap should be provided at the junction of house sewer and public sewer .

9) Rain water from room or court yards should not be allowed to mix with house sewage or sullage rain water pipes should drain out rain water directly into the street gutters.

10) Sewers joints should be water tight . Highly quality sewer pipes should be used in the system.

11) The entire drainage system should have proper ventilation arrangement .

12) The layout of house drainage system should be such that it can be repaired or cleaned easily if necessary .

13) The distance between inspection and gully chamber should not exceed 6 m.

14) If there is a possibility of surcharge in the sewer under storm condition. all gullies and sanitary fitting should be located above the level of maximum surcharge . If it is not possible ,an anti-flood valve should be provided in the manhole nearest to the junction of drain and sewer.

15) Manholes should be provided at each end immediately outside the building .

16) If part of the pipe is laid above the ground , it should be laid on concrete supports.



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