PLUMBING

• Plumber


  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
• Categories of Plumbers


  • Apprentice Plumber
  • Journeyman Plumber
  • Master Plumber
• Apprentice Plumber


  A beginner at the trade who usually serves for 3 to 5 years as a helper to a journeyman
• Journeyman Plumber


  Has served his apprenticeship and is competent to perform the tasks of installing and repairing the plumbing system
• Master Plumber


  A person technically and legally qualified and licensed to practice the profession of master plumbing without limitations in accordance with R.A. 1378, having passed the examinations conducted by the Professional Regulation Commission, has received a Certificate of Registration from the Board of Master Plumbing and possesses the current License to Practice
• Plumbing Code


  The manifestation of the right of the government to regulate the practice of the plumbing profession based on the principle of the protection of public health
• The basic goal of the National Plumbing Code of the Philippines is to ensure the qualified observance of the latest provisions of the plumbing & environmental laws
• The "Plumbing Law of the Philippines" was approved


  June 18, 1955
• The "Plumbing Law of the Philippines" was amended


  November 28, 1959
• The "Plumbing Law of the Philippines" was revised


  December 21, 1999
• Cross-Connection


  Any connection or arrangement, physical or otherwise, between a potable water supply system and any plumbing fixture or tank, receptacle, equipment or device, through which enables non-potable, used, unclean, polluted, contaminated water or other substances to enter into any part of such potable water system under any condition
• Backflow


  The flow of water or other liquids, mixtures or substances into the distributing pipes of a potable supply of water from any source other than from its intended source
• Back-Siphonage


  The flowing back of used, contaminated or polluted water from a plumbing fixture or vessel into a water supply due to a negative pressure in such pipe
• Air Gap, Water Distribution


  An unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet conveying potable water to the flood level rim of any tank, vat or fixture
• Atmospheric Vacuum Breaker (AVB)


  Has an air inlet valve that closes when the water flows in the normal direction. But, as water ceases to flow the air inlet valve opens, thus interrupting the possible backsiphonage effect
• Pressure


  Inadequate Water Pressure - Whenever the water pressure in the main or other source of supply will not provide a water pressure of at least 103 kPa (15 psi) after allowing friction and other pressure losses, a hydro pneumatic pressure tank or an elevated tank and booster pump will provide 103 kPa pressure

  Excessive Water Pressure - When the local water pressure is in excess of 551 kPa (80 psi), an approved-type pressure regulator preceded by an adequate sized strainer shall be installed to reduce pressure on the building side of the regulator to the required supply pressure
• Water Hammer


  A pressure surge or wave resulting when a fluid in motion is forced to stop or change direction suddenly (momentum change). Water hammer commonly occurs when a valve is closed suddenly at an end of a pipeline system and a pressure wave propagates in the pipe. It may be known as hydraulic shock. This pressure wave can cause major problems from noise and vibration to pipe collapse
• Air Chamber


  A space filled with air, commonly to act as cushion or shock absorber for equalizing the flow of liquid in a pump or part of the hydraulic system
• Plumbing systems are designed with safety features such as pressure relief valves, backflow preventers, and drainage traps.
• Principle #1

  All premises intended for human habitation, occupancy or use shall be provided with a supply of pure and wholesome water, neither connected with unsafe supplies nor subject to hazards of backflow or back siphonage.
• Principle #2

  Plumbing fixtures, devices and appurtenances shall be supplied with water in sufficient volume & at a pressure adequate to enable them to function satisfactorily & without undue noise under normal conditions of use.
• Principle #3

  Plumbing shall be designed and adjusted to use the minimum quantity of water consistent with proper performance and cleaning.
• Principle #4

  Devices for heating and storing water shall be so designed and installed as to prevent dangers from explosion through overheating.
• Principle #5

  Every building having plumbing fixtures installed & intended for human habitation, occupancy or use on premises abutting on a street, alley or easement where there is a public sewer, shall be connected to the public sewer system.
• Principle #6

  Each family dwelling unit on premises abutting on a sewer or with a private sewage disposal system shall have at least 1water closet & 1 kitchen-type sink. Further, a lavatory or bathtub or shower shall be installed to meet the basic requirement of sanitation & personal hygiene.
• Principle #7

  Plumbing fixtures shall be made of smooth nonabsorbent material, free from concealed fouling surfaces & shall be located in ventilated enclosures.
• Principle #8

  The drainage system shall be designed, constructed and maintained to safeguard against fouling, deposit of solids, clogging and with adequate
• Principle #9

  All piping of plumbing systems shall be of durable NAMPAP – APPROVED materials, free from defective workmanship, designed & constructed by Registered Master Plumbers to ensure satisfactory service.
• Principle #10

  Each fixture directly connected to the drainage system shall be equipped with water – sealed trap.