Exam from RJES

• Principle No. 5

  Every building having plumbing fixtures installed and 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 sewer system.
• Code of Ethics No. 1


  Shall not act in an unprofessional manner and demand any remuneration other than his/her original charges except for additional services not covered in the basic contract.
• conform to requirements for a new plumbing system


  May be made to any existing plumbing system provided the addition, alteration or repair works
• Alley


  Any public space, public park or thoroughfare less than three (3) meters but not less than two (2) meters in width dedicated or deeded for public use.
• No fitting having more than one inlet at the same level shall be used unless such fitting is constructed so that the discharge from one inlet cannot readily enter into the other inlet.
• Horizontal drainage lines connecting to other horizontal drainage lines shall enter through any of the following: EXCEPT SANITARY TEES
• Industrial wastes


  Wastes detrimental to the public sewer system or to the functioning of the sewage treatment plant shall be treated and disposed of as found necessary and as directed by the Administrative Authority or other authorities having jurisdiction.
• Vent Pipe


  A pipe in the plumbing system provided to ventilate a house drainage system to prevent trap siphonage and back pressure
• Approved stainless steel bands with neoprene gaskets


  For jointing of hub less cast-iron soil pipes are acceptable for use.
• Independent system


  The drainage system of each new building and of new work installed in any existing building shall be separate and independent from that of any other building and when available, every building shall have an independent connection with a private or public sewer.
• Screwed Pipe


  Iron Pipe Size (IPS) shall be supported at not less than every other storey height.
• Copper Tubing


  It shall be supported at each storey or at maximum intervals of 3 meters on center.
• Lead Pipe


  It shall be supported at intervals not exceeding 1.20 meters at centers with a rigid vertical back-up
• Plastic Pipe shall be supported at every 1m interval.
• Horizontal pipes shall be supported at sufficiently close intervals to keep them in alignment and prevent sagging.
• IPS shall be supported at approximately how many meters intervals for piping 19 mm diameter and smaller?

  3.0 meters
• Copper Tubing shall be supported at approximately how many meters intervals for piping 51 mm and larger in diameter?

  3.0 meters
• IPS shall be supported at approximately how many meters intervals for piping 25 mm and larger in diameter?

  -

  3.6 meters
• Copper Tubing shall be supported at approximately how many meters intervals for piping 38 mm diameter and smaller?

  1.8 meters
• Lead Pipe


  It shall be supported by stiff metal or wooden backing for its entire length with hangers properly spaced.
• 38 mm


  Plastic Tube shall be supported by stiff metal or wood backing with hangers in its entire length for small-size tubing up to   diameter  and without backings but with spaced metal hangers at approved spacing for larger-size tubing.
• What is the clear height of the tunnels above the pipe? When pipe is driven, the drive pipe shall be at least one pipe size larger than the pipe to be laid.

  0.60 m
• Tunnels shall be limited in length to one-half (1/2) the depth of the trench, what is its maximum length?

  2.40 m
• Trenches shall be back-filled in thin layers of how many meters above the top of the pipe with clean earth which shall not contain stones, boulders, cinders or other materials which can damage or break the pipes or cause corrosive action?

  0.30 m
• Restaurant kitchen and other special-use sinks may be made of approved- type bonderized and galvanized sheet steel of not less than 1.6 mm thick.
• 0.30 m


  Fixtures having concealed slip joint connections shall be provided with an access panel or utility at least in its least dimension and arranged so that the connections are readily accessible for inspection and repair.
• Each such tailpiece, continuous waste or waste and overflow shall not be less than 32 mm O.D. for lavatories, drinking fountains and similar  small fixtures; brass or copper shall not be used for urinal tailpiece or trap
• Baptistries, ornamental and lily ponds, aquaria, 38 mm O.D. ornamental fountain basins and similar constructions when provided with water supplies connected to potable water supply lines shall be protected from back-siphonage.
• Wastewater drain for “Sacrarium” cupsink at church altar and Baptistries fontoutlet shall discharge direct to the ground and not connected to the sanitary drainage system.
• Plumbing fixture shall be installed in a manner to provide easy access for repair and cleaning. Where practical, all pipes from fixtures shall be run parallel and close to the nearest wall or building line.
• It shall protect every water supply to a urinal or other approved backflow prevention device.

  An approved type vacuum breaker
• What is the minimum distance between the door or entry to the drain opening?

  1.2 m
• When shower receptors are built above ground the sub-floor and rough side of walls to a height of no less than 76.0 mm above the top of the finished dam or threshold shall be first lined with sheet lead or copper or with other durable and watertight materials.
• What is the maximum space between drains in gutter?

  4.9 m
• What is the minimum thickness of copper pans or liners?

  Gauge No. 24 B & S or 0.5 mm thick
• Waste Pipe


  Carries waste other than fecal matter
• Check valve


  It checks or prevents reversal of flow
• When provided with water outlets for such space, a 610 mm width of wash sink or 457 mm diameter of a circular basin, shall be considered equivalent to one lavatory
• RP (reduced-pressure)


  Consists of two independently acting internally loaded check valves, a differential pressure relief valve, four properly located test cocks and two isolation gate valves.
• 17th century


  Birth of plumbing profession in the Philippines