Notes Sanitary work refers to carrying the waste water to the waste disposal system (sewerage system) through plumbing fixtures. The plumbing installation is governed by the regulations and rules adopted by the concerned municipal corporations or committees of different States and Union Territories. Plumbing and sanitation work thus plays an important role in the construction of a building. A plumbing system consists of pipe fittings and appliances used for water supply and drainage. The plumbing system includes:

• Water supply, galvanised iron (or plastic) pipes and fixtures;

• Soil pipes and fixtures;

• Sanitary drainage system; and

• Rainwater drainage system.

For an efficient plumbing system, it is important that standard plumbing and sanitary material, as per the Bureau of Indian Standards (BIS), are used. It is also important that quality workmanship, practical checks and supervision are ensured during plumbing and sanitary work. It helps in getting the best out of the skilled and unskilled labor. Before starting the work, the plumber must keep the following points into consideration.

1. Water supply system: sources of clean and potable water

2. Plumbing fixtures and pipes: knowledge about different requirements and specifications

3. Sanitary and drainage system: knowledge about sewerage system

4. Rainwater drainage system

5. Plumbing drawing and their uses: role of plumbing drawing.