Plumbing

1. See that the pipes  are of proper  weight  and have proper markings. 
2. In case of docketed pipes the sockets should be on the supply end. 
3. See that the pipes  are coated with approved anti-corrosive treatment where specified. 
4. See that the joints  are correctly laid and appropriate quantity of lead used. 
5. In case of water supply tubing, see that joints are correctly made and given  a coating of lead/cement paint. 
6. See that the rim of the pipe is  straight and  that surface pipes are at least 25 mm away from the wall. 
7. Try to align pipes on walls so that they do not give an ugly appearance. As far as possible carry the pipes on the outside face. 
8. For concealed plumbing, the chases should be made with a sharp chisel and deep enough so that the pipes are embedded a minimum of 5 mm below the masonry surface. Before covering the pipes with a base coat of plaster, pressure'tests should be carried out and leaks rectified. Joints in between elbows/tees/fittings should be avoided.