INTERNAL PLUMBING AND DRAINAGE WORK PROCEDURE

Procedures

Internal Plumbing and Internal Drainage:

Pre Installation Procedures (internal plumbing / internal drainage works):

1)    A licensed plumber shall be employed to carry out all plumbing works and a Photo Copy of his license shall be kept ready for producing before any authorized agency coming for inspection.

2)     It shall be ensured that base coat of toilet water-proofing is complete before staring any of the following procedure.

3)     It is necessary to have ledge walls for RCC shear walls for concealed plumbing network and the base coat waterproofing should be necessarily done before laying of ledge walls.

4)     Toilet walls shall be clearly marked with proposed tile locations (using nylon string dipped in white color solution) showing tile joints, routing pipelines over walls, locations of fittings and proposed outlet of pipes. (Concerned architectural drawing showing exact distances from walls and finished floor level (FFL) of toilet, shall be referred to while doing so and the drawing shall be kept ready for inspection). Slight adjustments in pipe routing, if required, shall be made on site with consent of Site In charge for keeping outlets of pipes at joints.

5)    Finished tile plane shall be clearly marked on walls by fixing tile pads at four corners of walls.

6)    Dado tile piece, if required, shall be kept at corner or at a place which is not easily detected.

7)     Similarly, toilet floor shall be marked with correct position of sanitary-ware including bath tub fittings and piping.

8)    Flush tanks / Boiler or heater / Wash basin positions shall be marked on the walls.

9)   Drainage outlet holes shall be clearly marked on walls, hole size being same diameter as that of outlet pipe. Holes shall not be made in cast RCC members. Sleeves shall be planned and kept at the desired location at the time of cast.

Ablution tap position shall be kept on right hand side unless specified otherwise on drawing.

During Installation Procedures (internal plumbing / internal drainage works):

1)    Chasing of Brick-work shall start only after marking on Walls / Floors is approved.

2)     It shall be ensured that all pipes / fittings / sanitary-ware / sealants etc. are as per approved brand / as specified by Architect.

3)    Sufficient lighting arrangement shall be provided for working in dark areas.

4)     Chasing in masonry shall be done with the help of cutter machine and depth of groove in walls shall be 15mm more than diameter of pipe to accommodate mortar and plane of cutting shall be parallel to routing of pipeline. Within the chased portion light hammering shall be allowed, if it doesn’t cause harm to masonry.