Plumbers perform some or all of the following duties:

• Draw plans, drawings and specifications to determine the layout of the piping, water supply system and sewer and drainage systems;
• Installing, repairing and maintaining fittings and piping systems in residential and commercial and industrial buildings;
• Determining and marking the location of pipe fittings, holes for the passage of pipes through walls and floors, and accessories;
• Provide, in the walls and floors, openings of diameter suitable for pipes and fittings;
• Measure, cut, bend and tap pipes using manual or mechanical machines or tools;
• Join pipes with fittings, hose clamps, screws, bolts or gluing, brazing or welding equipment;
• Check the hoses with gauges for leaks;
• To prepare, if necessary, estimates.