PLUMBING CODE (Sample Questions) with Answers

Continuous vent - ANSWER A vertical vent that is a continuation of the drain to which it connects Storm water drainage piping - ANSWER A piping system designed to control and convey excess ground water to a suitable l ...

Continuous vent - ANSWER A vertical vent that is a continuation of the drain to which it connects Storm water drainage piping - ANSWER A piping system designed to control and convey excess ground water to a suitable location Private sewage disposal system - ANSWER When no public sewer intended to serve any lot or premises is available in any thoroughfare or right of way abutting such a lot of premises, drainage piping from the building shall be connected to ___________________. Fixture unit - ANSWER A unit which is equivalent to the flow rate of one (1) cubic foot of water per minute or 7-1/2 gpm of water is _______________. Watertight - ANSWER Roof joint shall be ______________. Lavatory - ANSWER A fixture designed for the washing of hands or face, sometimes called wash basin Excessive water pressure - ANSWER A condition in the distribution system where it could damage or create condition that will damage components of the distribution system or create a nuisance is termed as ________________. Vertical main soil, waste or vent piping - ANSWER A stack as defined in the code Back pressure - ANSWER Air pressure in drainage pipes greater than the atmospheric pressure Health officer - ANSWER No clevical toilet shall be installed in any building unless first approved by the __________________. Plumbing system - ANSWER All water supply, drainage, venting system and all fixtures and their traps complete with their connection 3/8" - ANSWER The minimum diameter size of water supply pipe to lavatory 72 hours - ANSWER Request for inspection by the master plumber to the administrative authority is required to be made in advance at least before the work to be tested Air gap - ANSWER The vertical distance that waste travels through open air between the waste pipe and the indirect waste receptor Branch interval - ANSWER A means of measurement for vertical waste or soil stack. It is equal to each floor level or storey in a building but are always eight-feet intervals Continuous waste - ANSWER A drain connecting the compartments of a certain fixture to its trap is called ________________. Storm water - ANSWER Rain water is _______________. Bushing - ANSWER A pipe fitting used to reduce the size of an opening is called ___________. 8psi - ANSWER The minimum pressure that should be maintained for fixtures containing flush tank supplies Gutter - ANSWER A piece of chemical fitted under another piece of flat metal or wood over which water is expected to run 10' - ANSWER Supports anchorage of piping shall not exceed an interval of _____. Fittings and adapters - ANSWER When connecting plastic pipe to other types of piping, the specific transition intended shall be made with approved ____________________. Rough piping inspection - ANSWER The inspection of a gas piping system prior to covering or concealing such pipe is called a ____________________. Copper tube with brazed joints - ANSWER Copper tubing used for water piping under concrete slabs within a building shall be ___________________. 63psi - ANSWER The static water pressure at the water meter is 80psi. At the outlet 40ft above the meter, the static water pressure would be approximately ________. 10 gal/min - ANSWER The water demand for shower head is _____________ per day. 6" - ANSWER Vent pipes may offset horizontally when the distance above the extreme overflow level of the fixture is at least ______. 5.00 - ANSWER The minimum plumbing permit charge for one unit is _______. Storm sewer - ANSWER A drainage pipe used to carry main of surface water, cooling water and similar liquid waste Vents - ANSWER Expansion joints shall be acceptable except in piping for __________. Fixture - ANSWER A receptacle attached to the plumbing system other than the trap in which waste may be collected or retained for an ultimate discharge into the plumbing system 5' - ANSWER Cast iron piping in 10' lengths installed horizontally shall be supported at intervals of not more than _____. Total fixture units - ANSWER Sizes of vertical and horizontal drainage pipes shall be determined from _______________________. Laminar flow - ANSWER The valve for controlling which has gradual and regular variation over time and space is called __________________. Rising stem gate valve - ANSWER The valve for controlling two or more outlet in a cold water supply line may be a ___________________. 3/4" - ANSWER The minimum size building supply by the code for water ASTM - ANSWER According to existing Plumbing Code, cast iron pipes, wrought iron pipes, weld steel pipes, copper pipes, vitrified clay, concrete and asbestos pipes shall conform to the standard other than the Philippine standard. Aluminum - ANSWER A material not listed in the code for use in water piping Testing laboratory - ANSWER The critical level marking or a backflow prevention device or vacuum breaker is a point established by the ____________________. Within the building - ANSWER cPVC water pipe may be used for hot and cold water distribution systems Wye combination - ANSWER When connecting horizontal drain line with another horizontal drain line, the acceptable fitting to be used is _______________________. 3" - ANSWER The minimum allowable size of any building drain, horizontal branch, vertical soil or waste stack serving one or more water closets shall be _______. Gutter - ANSWER It is a box-like collection device which is located on the exterior of the building and receives storm water on one side 15psi for 15 min - ANSWER The air pressure test for any threaded (low pressure) gas piping shall be at least _________________. Cast iron - ANSWER Caulked or screwed joints shall be applicable to _____________. 2" - ANSWER The vent pipe serving a combination waste and vent system with a 4" drainpipe shall be at least _____. Lowest to the highest point - ANSWER Building sewers shall be tested by completely filling the sewer with water from the _______________________. Exposed fixture supply - ANSWER In the water supply piping slip joints may be used only on the ______________________. Pressure relief valve - ANSWER A water system containing a water heater will require ____________________. Building sewer - ANSWER The drainage pipe running from outside a building foundation to the main sewer Plumbing code - ANSWER A set of regulation adapted by an administrative agency that has jurisdiction over materials and design specification in plumbing 8% - ANSWER The maximum lead content allowed in pipe used to convey potable water Building drain - ANSWER The lowest piping system that receives the discharge from soil waste and other drainage pipe No - ANSWER Is it permissible to place building sewer and drainage piping in the same trench with the water service pipe? One year - ANSWER Upon issuance of plumbing permit, plumbing installation shall commence within _______________. Ball cock - ANSWER An automatic fill device, most commonly found in toilet tanks Soil pipe - ANSWER A vertical pipe to convey main waste DWV system - ANSWER He drainage system is subdivided into three different components, drainage, the waste and the vent. This is referred to as House sewer - ANSWER The part of the plumbing system extending from a point 4 or 5 feet from the inner face of the foundation wall of a building to the junction with another sewer Regulating equipment - ANSWER Equipment which includes all valves and controls used in plumbing system are required to be accessible or readily accessible 26 GA - ANSWER Rain water piping located on the exterior of a building using galvanized sheet metal shall not be less than ___________. Insanitary - ANSWER A term used which is contrary to sanitary principles or injurious to health Ejector - ANSWER An electricity or mechanically operated device used to elevated sewage and liquid waste from a lower level to a point of discharge into a sewer or other disposal system 4 - ANSWER The maximum fixture units loading allowed on a 2" waste stack Septic tank - ANSWER A watertight receptacle that receives sewage Velocity - ANSWER The force required to move the water inside the pipe Bedpan washer - ANSWER Another name for a clinical sink Reynolds number - ANSWER A measure of inertia forces to viscous forces, which sometimes describe whether it is turbulent or laminar flow is Air gap device - ANSWER A device used to connect drainage of a dishwasher with the sanitary drainage system is called Vertical - ANSWER A pipe which makes an angle of 45 degrees from the vertical is considered? 2 gallons - ANSWER The minimum quantity of water for flushing urinal Bending equipment - ANSWER Changes in direction at copper tubing may be made with House drain - ANSWER That part of the lowest horizontal piping of the plumbing which receives the discharge from soil, waste and other drainage pipes inside of the building and conveys it to the house sewer Cast iron - ANSWER Piping which shall not be installed under of within 2' at any building or structure Flanges - ANSWER Fixtures connections between drainage pipes and water closets shall be made with ____________. Cast iron bell and spigot soil pipe - ANSWER A joint made by firmly packing with oakum and filled with molten lead to a depth of not less than 1 inch, is for what pipe? 12" - ANSWER The distance between a water heater and the union on the water lines shall not be more than _____. Control valve - ANSWER What valve is required ahead of each water supplied appliance, each slip joints or non-metallic connection? Vertical pipe - ANSWER When pipe makes an angle of not more than 45 degrees with the vertical, it is considered as 4 - ANSWER Total number of water closets on a 3-inch stack Diameter of the draw pipe served - ANSWER A vent in a combination waste and vent system shall be approximately equal in area to one half _________________. Drainage, waste and vent - ANSWER DWV materials mean 48" - ANSWER Every passage way to attic water heater shall have a solid continuous flooring not less than _____ wide. Public or private sewer - ANSWER Every building in which plumbing fixtures are installed shall have a connection to a 15psi - ANSWER Allowing for friction and other pressure losses the available water pressure for fixture is 4 - ANSWER Th maximum trap loading for a 2" trap is ____ units. Infiltration - ANSWER The movement of water through the surface of a soil and into the soil below the surface is 1/4" per foot - ANSWER The minimum slope of 3" horizontal pipe shall be not less than Inlet connection of the appliance - ANSWER The size of the supple piping outlet for any gas appliance shall not be less than the Fixture unit - ANSWER The quantity of water required to be supplied to every plumbing fixture shall be represented by Sump - ANSWER A pit or receptacle at a low point to which the liquid wastes are drained 10 ft head - ANSWER The waste test for drainage system shall be at least 150% - ANSWER _______ of used water pressure is required to test water supply system 5 - ANSWER Fee for one unit of plumbing as plumbing unit is 3-1/2" - ANSWER The minimum size clean out allowed to serve a 4" drain line Inside storm drain - ANSWER A storm drain sometimes located under the basement floor within the walls of the uPVC - ANSWER Unplasticized polyvinyl chloride UL - ANSWER Underwriter's Laboratories IAPMO - ANSWER International Association of the Plumbing and Mechanical Officials CCIP - ANSWER Centrifugal Cast Iron Pipe ISO - ANSWER International Standard Organization NAMPAP - ANSWER National Master Plumbers Association of the Philippines MWSS - ANSWER Metropolitan Waterworks and Sewerage System PAGASA - ANSWER Philippine Atmospheric Geophysical Astronomical Services Administration PSME - ANSWER Philippine Society of Mechanical Engineers PNS - ANSWER Philippine National Standards LWUA - ANSWER Local Water Utilities Administration ASTM - ANSWER American Society for Testing and Materials ABS - ANSWER Acrylonitrile butadiene styrene HDPE - ANSWER high density polyethylene PPr - ANSWER Polypropylene PSSE - ANSWER Philippine Society of Sanitary Engineers ANSI - ANSWER American National Standards Institute NFPA - ANSWER National Fire Protection Association VSTR - ANSWER Vent stack thru roof PDI - ANSWER Plumbing and Drainage Institute GIP - ANSWER Galvanized iron pipe DWV - ANSWER Drain, Waste and Vent cPVC - ANSWER Chlorinated polyvinyl chloride GPM - ANSWER Gallons per minute XH - ANSWER Extra heavy RCP - ANSWER Reinforced Concrete Pipe VTR - ANSWER Vent thru roof DFU - ANSWER Drainage Fixture Unit EMT - ANSWER Electrical Metallic Tubing HVAC - ANSWER Heating, Ventilation and Air Conditioning IPS - ANSWER Iron Pipe Size NEMA - ANSWER National Environmental Management Authority PPM - ANSWER Parts per million PRV - ANSWER Pressure relief valve TDH - ANSWER Total dynamic head Branch interval - ANSWER A vertical length of soil or waste at eight feet in height, within which horizontal branches from one storey or floor of the building or structure are connected to the stack Flood level rim - ANSWER The top edge of a plumbing fixture or receptacle from which water overflows Pedestal urinal - ANSWER A type of urinal in which the bowl is elongated and attached to the floor. A front piece conceals the internal elements of the urinal located at the part of it Trap seal - ANSWER The vertical distance between the top dip and the crown weir Excreta - ANSWER Disposal of sewage, human excreta or other waste waters shall be done through an approved ___________ and storm drainage system 2% - ANSWER Horizontal drainage pipe shall have slope of not less than 20 mm/m or ______ toward the point of disposal except the ff. reasons: 1. Excessive depth of the proposed drainage line 2. Structural or geological features of the terrain 3. Existing adverse arrangement of the building or structure 102mm - ANSWER Piping ________ or larger in diameter may have a slope of 1% Longer - ANSWER Changes in direction of drainage piping shall be 22-1/2 degree bend; 45- and 60-degree bend or other approved fittings of __________ sweeps. No - ANSWER Can asbestos cement pipe be used as vent pipe? 15m - ANSWER What is the distance of the septic tank from any source of water supply? 75mm - ANSWER What is the recommended size for drain serving water closet? 0.30m - ANSWER What is the minimum distance of sewer lines from water lines? Three (3) working days - ANSWER The administrative authority requires that every request for inspection be filed at least how many days/hours before such inspection is intended? Ferrule - ANSWER A metallic sleeve, caulked or joined to an opening in a pipe, into which the plug is screwed that can be removed for cleaning or examining the interior of the pipe Caulking - ANSWER The plugging of an oakum, lead or other materials that are pounded into the annular space Air gap - ANSWER The unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a rank, plumbing fixture, or other device and the flood level rim of the receptacle Backflow - ANSWER The flow of water or other liquids, mixtures or substances into the distributing pipes of potable supply or water from any source or sources other than its intended source Blind flange - ANSWER A flange that closes the end of the pipe where there is no opening for the passage of water Blow-off - ANSWER A controlled outlet on s pipeline used to discharge water Stack pipe - ANSWER What is the general term applied on any vertical line of soil, waste or vent piping? Main vent - ANSWER What is the terminal of other forms of ventilation and is installed to maintain a balanced atmospheric pressure in the waste pipe and fixture traps? 7.48 gallons - ANSWER How many gallons of water are there in one cubic foot of water? Cap - ANSWER The fitting used to close the end of the pipe Flange - ANSWER The fitting which is used in connecting the male end of a pipe to a fitting of a larger size 20cm - ANSWER The recommended distance from the bottom of the water tank that the dip tube of cold water supply should terminate 15m - ANSWER Interval distance between the cleanout along the lateral line Local vent - ANSWER That pipe or shaft which is used to remove foul or congested air from the fixture or room snd conveys the same to the atmosphere 5 psi - ANSWER On large plumbing installations, water tests are applied progressively where the low end of the line is plugged and filled with water. What is the minimum pressure that should be applied? 5 psi - ANSWER In making an air test to the plumbing installation (after closing all the openings with testing plugs), what is the pressure applied as indicated on the mercury gauge? Fixture supply - ANSWER What is the portion of the water system piping which is suspended from the basement ceiling and to which are connected with branches that serve the fixture? 8 - ANSWER What is the maximum number of fixtures for a single circuit/loop vent? Lavatory - ANSWER What fixture is usually taken as a fixture unit in determining the size of soil or waste pipes 2" - ANSWER The minimum size of a house sewer not carrying human excrement and installed under ground" 6" - ANSWER The minimum size of a house sewer carrying human excrement and installed underground 3" - ANSWER The minimum size of a soil stack 2" - ANSWER The minimum size of a water riser 4" - ANSWER The minimum distance of the inlet to the bottom of the sump pit 4" - ANSWER The minimum size of the under drains Elongated bowl type - ANSWER What type of water closet is required for public use? 600mm - ANSWER The minimum distance between two urinals according to the code Fixture - ANSWER What is the portion of the water system piping which furnishes the fixture installed on the various floors with a flow of water? 5 psi - ANSWER In the conduct of water test for plumbing installations, the pipe will be subjected to ________ pressure for 15 minutes before inspection. Lett - ANSWER In water supply installation, where should the hot water lines/valves located? 25mm - ANSWER The minimum air gap 0.30m - ANSWER In laying water pipelines underground, provisions for the minimum allowable distance were stipulated by the code. What is the minimum distance of the water lines with respect to the sewer lines parallel to the water line? 5 - ANSWER The interval of the floors where yoke vent be located 152mm - ANSWER The minimum water seal height of the interceptor or clarifier 150mm - ANSWER Minimum size of building sewer is? 15m - ANSWER The maximum spacing of the cleanout is at every American Water Works Association - ANSWER AWWA 15 psi - ANSWER The minimum pressure that should be maintained in a flushometer valve according to the code 8 psi - ANSWER The minimum pressure that should be maintained in a flush tank according to the code Percolation test - ANSWER Test used to determine the absorption quality of questionable soil 3/32 inch - ANSWER What is the width of the spacer inside the neoprene gasket where fittings or pipe ends meet? Excreta - ANSWER Disposal or sewage, human excreta or other waste waters shall be done through an approved __________ and storm drainage system