Plumbing engineering design handbook volume (2024)

PLUMBING Plumbing the art and technique of installing pipes, fixtures, and other apparatuses in buildings for bringing in the supply of liquids, substances and/or ingredients and removing them; and such water, liquid and other carried-wastes hazardous to health, sanitation, life and property pipes and fixtures after installation i.e., the 'plumbing system'. (Section 217.6 The Revised National Plumbing Code of the Philippines 1999) PLUMBING SYSTEM Plumbing System includes all potable water supply and distribution pipes, all plumbing fixtures and traps; all sanitary and storm drainage systems; vent pipes, roof drains, leaders and downspouts; and all building drains and sewers, including their respective joints and connections; devices, receptacles, and appurtenances within the property; water lines in the premises; potable, tap, hot and chilled water piping; potable water treating or using equipment; fuel gas piping; water heaters and vents for same. (Section 217.12 NPC 1999) A Plumbing system, reduced to its simplest terms, consists of a supply pipe leading to a fixture and a drainpipe taking the used water away from this fixture. The system constitutes the following: 1. The water supply and water distribution system. Carries water from the water source, street main or a pump to the building and to various points in the building at which water is used. 2. The plumbing fixtures. The receptacles that receive the supplied water and allow the occupants of the building to use the water. 3. The drainage system. The piping network within the building which conveys from the plumbing fixtures all wastes and fecal matter (sanitary drainage) as well as rainwater (storm drainage) to a point of disposal or a treatment facility. THE PLUMBER The plumber is the one who works or engages in the business of installing in buildings the pipes fixtures and other apparatus for bringing in the water supply and removing liquid and waterborne wastes. There are three categories of plumbers based upon their graces of experiences. They are: 1. Apprentice plumber-a beginner at the trade who usually serves for 3 to 5 years as helper to a journeyman.