chapter 2

• plumbing

  is  the  art  and  technique  of installing  pipes,  fixtures,  and  other apparatus to convey and supply water in buildings and to dispose and discharge waste water and other liquids, gases and other substances out of the building in a safe orderly, healthy and sanitary way to ensure the health and sanitation of life and property.
• plumber

  is a title given to a person who is skilled in the field of sanitation.  It  was  derived  from  the ancient Roman word Plumbarius which is  taken  from  the  Latin  term  word Plumbum.
• plumbarius

  refers to an individual who worked in the sanitary field of ancient Rome.
• plumbum

  on the other hand, meant lead. A metal used as plumbing material by the Romans, preferred for its twin properties of malleability and resistant to acid
• In 1954

  year the Third Congress approved House Bill No. 962
• june 18, 1955

  year became R.A. 1378 “Plumbing Law of the Philippines” upon ratification of President Ramon Magsaysay.
• in 1902

  the Plumbing Trade was duly recognized by the government in the City of Manila. Master Plumber John F. Haas became the first Chief of the Division of Plumbing Construction and Inspection.
• in 1935

  the  National  Master  Plumbers  Association  of the Philippines(NAMPAP) was formally organized.
• National  Master  Plumbers  Association  of the Philippines

  NAMPAP
• Manila City Ordinance 2411

  “Plumbing Code for the City of Manila”
• january 28, 1959

  the National Plumbing Code of the Philippines prepared by NAMPAP was promulgated and approved by Malacañang.
• Before Martial Law in 1972

  Republic Act No. 6541 otherwise known as the “Building Code of the Philippines” was passed with the “National Plumbing Code of 1959” as referral code in full text.
• December 21, 1999

  The Professional Regulation Commission (PRC) adopted the Revised Plumbing Code of 1999 which President Joseph Estrada approved pursuant to Section 4 of R.A. 1378 known as the Plumbing Law.
• components of plumbing

  • water distribution system
  • fire protection system
  • plumbing fixtures
  • sanitary drainage system
  • storm drainage system
• water distribution system

  a plumbing system is to deliver water to all customers  of  the  system  in  sufficient quantity for potable drinking water and fire   protection   purposes,   at   the appropriate pressure, with minimal loss, of safe and acceptable quality, and as economically as possible.
• fire protection system

  This system includes  fire  suppression,  sprinklers, smoke  detectors,  and other  fire protection  equipment  that works  in tandem to protect against fire. It is best to work with a fire protection company that  understands  the  needs  of  your property  and  provides  a  variety  of integrated protection systems.
• plumbing fixtures

  Is  an exchangeable device  which can  be connected  to a  plumbing system  to deliver and drain water
• sanitary drainage system

  a system of piping within public  or  private  premises  that  conveys sewage or other liquid waste to an approved point of disposal. The intent is to design and install  sanitary  drainage  systems  that  will function reliably, are neither undersized nor oversized, and are  constructed from materials, fittings and  connections whose quality is regulated by codes and standards.
• storm drainage system

  It’s  a network  of  structures,  channels and underground pipes that  carry storm water  (rain  water) to  ponds, lakes, streams and rivers. The network consists of both public and private systems.
• the plumbing cycle

  • supply
  • distribution
  • use
  • collection
  • disposal
  • treatment
  • source
• air gap

  An air gap in a water supply system,  is  the  unobstructed  vertical distances through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture, or other device and the flood level rim of the receptacles
• back flow

  is the flow of water, or other liquids mixture or substances into the distributing pipes of a potable supply of water from any source, other than its intended source.
• back siphonage

  refers to the back flow of used contaminated or polluted water from a plumbing fixture ir vessel into a water supply pipe due to a negative pressure in such pipe.
• battery of fixture

  refers to any group of two or more similar adjacent fixtures which discharges into a common horizontal waste pipe or soil branch
• bib

  synonymous with faucet, cock, tap, plug. the word faucet is preffered
• blind flange

  a flange that closes the end of a pipe. there is no opening for the passage of water
• blow off

  a controlled outlet on a pipeline used to discharge water
• branch

  is any part of piping system other than the main riser or stack
• calking

  plugging an opening with oakum, lead or other materials, that are pounded into the place or opening
• circuit vent

  branch vent that serves two or more traps, and extends from the front of the last fixture connection of a horizontal branch to the vent stack
• continuous vent

  a vertical vent that is a continuation of the drain to which the vents connects
• combination waste and vent system

  specifically designed system of waste piping embodying the horizontal wet venting of one or more sinks or floor drains by means of common waste and vent pipe adequately sized to provide free movement of an above the flow line of the drain
• common vent

  is a drain from two or three fixtures connected to a single trap. it is also called a dual vent
• cross connection

  is any physical connection between two otherwise separate piping system, one contains potable water, and other from unknown or questionable safety, whereby, water may flow from one system to other direction flow depending on the pressure differential between two systems
• dead end

  is the extended portion of a pipe that is close at one end permitting the stagnation of water or air therein
• developed length

  length along the center of the pipe and fitting
• diameter

  refers to he nominal internal diameter (ID) of such pipe, except bras and copper tube where the terms refers to the outside diameter (OD) of the pipe
• drainage system

  includes all piping within the public or private premises that conveys sewage, raineater, or other liquid waste, to a legal point of disposal. it does not include the mains of the public sewer system private or public sewage treatment disposal plant.
• dry vent

  vent that does not carry water, or water borne wastes
• effective opening

  the minimum cross-sectional area at the point of water supply supply discharges, measured for expressed in terms of diamer of a circle. if the opening is not circle, the diameter of a circle that is equivalent to the corss sectional area (this applicable to air gap)