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~Master Plumber
Definition of Terms - NPCP
| Term | Definition |
|---|---|
| ABS | Acrylonitrile-Butadiene-Styrene |
| Alley | any public space, public park or thoroughfare less than 3 meters but not less than 2 meters in width. For public use. |
| Alter or Alteration | any change, addition or modification in construction or occupancy |
| Accessible | having access but may require prior removal of an access panel, door or similar obstruction. |
| Readily Accessible | direct access without removing any panel, door or similar obstruction. |
| Airbreak | a physical separation, which may be a low inlet into the indirect waste receptor from the fixture, appliance or device indirectly connected. |
| Air Gap, Drainage | the unobstructed vertical distance through the atmosphere between the lowest opening from any pipe, plumbing fixture, appliance or appurtenance conveying waste to the flood level rim of the receptor. |
| 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. |
| Approved | accepted or acceptable under an applicable specifications or standard stated or cited in this Code, or accepted as suitable for any proposed use under procedures and powers of the administrative authority. |
| Approved Testing Agency | an organization primarily established for purposes of testing to approve standards and approved by the Administrative Authority. |
| 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. |
| Backflow Connection | condition or any arrangement whereby reverse flow can occur. |
| Backpressure Backflow | Occurs due to an increased reverse pressure above the supply pressure. This may be due to pumps, boilers, gravity or other sources of pressure. |
| Backflow Preventer | device or means to prevent flow of liquid from returning to the source of supply. Also called vacuum breaker. |
| Back-siphonage | the flowing back of used, contaminated or polluted water from a plumbing fixture or vessel into a water supply pipe due to a negative pressure in such pipe. |
| Backwater Valve | a device installed in a drainage system to prevent reverse flow. |
| Backvent Pipe | the part of a vent line, which connects directly with a individual |
| Ball Cock | a valve opened and closed by the fall and rise, respectively, of an attached ball floating on the surface of the liquid. |
| Ball Joint | a type of pipe connection in which a ball-shaped end is held in a cup like shell and allows movements in every direction. |
| Bathroom | a room equipped with a shower stall and bathtub. |
| Battery of Fixtures | any of two or more similar adjacent fixtures which discharge into a common horizontal soil or waste branch. |
| Bell or Hub | that portion of a pipe which, for a short distance, is sufficiently enlarged to receive the end of another pipe of the same diameter for the purpose of making a caulked or push-on joint. |
| Bending Pin (or Iron) | a tool for straightening or bending lead pipe. |
| Bibb | synonymous with faucet, cock, tap, plug, etc. The word "faucet" is preferred. |
| Bidet | A plumbing fixture used for washing the middle private part of the body, especially the genitals. Also called a "sitz" bath. |
| Blank Flange | A pipe flange that closes the end of a pipe. There is no opening for the passage of liquid or gas. |
| Blow-off | a controlled outlet of a pipeline to discharge liquid or detritus. |
| Board | The Licensure Board for Master Plumbers |
| Boiler Blow-off | a valved outlet of a boiler that permits discharge of accumulated sediment. |
| Branch | Any part of the piping system other than a main, riser or stack. |
| Branch Interval | a length of soil or waste stack corresponding in general to a story height, but in no case less than 2.43 meters within chich the horizontal branches from one floor of a building are connected to the stack. |
| Branch Vent | a horizontal vent connecting one or more individual vertical back vents with the cent stack or stack vent. |
| Brazed Joint | any joint obtained by joining of metal perts with alloys which melt the temperature higher than 449 degrees centigrade, but lower than the melting temperature of the parts to be joined. |
| Cesspool | a non-watertight lined excavation in the ground which receives the discharge of a sanity drainage system, designed to retain the organic matter and solids discharging therefrom, but permitting the liquid to seep through the bottom and sides. |
| Chase | A vertical shaft for installation of different pipe stacks. |
| Check Valve | a valve that automatically closes to prevent the flow of liquid or gas in a reverse direction. |
| Circuit Vent (or Loop Vent) | a group vent pipe which starts in front of the extreme fixture connection on a horizontal branch and connects to the vent stack. |
| Code | the word "Code" or "This Code" shall mean regulations or amendments in the National Plumbing Code of the Philippines. |
| Combination Waste and Vent System | a specially designed system of waste piping embodying the horizontal wet venting of one or more sinks or floor drains by means of a common horizontal waste and vent pipe, adequately sized to provide free movement of air above the flow line of the drain. |
| Commission | The Professional Regulation Commission (PRC) |
| Common | the part of a plumbing system designed and installed to serve more than one (1) appliance, fixture, building or system. |
| Confined Space | a room or space having a volume less than 1.4 cu.m. with 250 kilogram calorie of the aggregate input rating of all fuel-burning appliances installed in that space. |
| Contamination | an impairment of the quality of the potable water |
| Continuous Vent | a continuous vent is vertical vent that is a continuation of the drain to which the vent connects. |
| Continuous Waste | a drain connecting the compartments of a set of fixtures to a trap or connecting other permitted fixtures to a common trap. |
| Conductor or Downspout | a vertical pipe to convey rainwater. |
| Corporation Cock | a stop valve placed at the connection of the water service pipe to the water main. |
| Court | an open, unoccupied space, bounded on two (2) or more sides by the walls of the building. An inner court is a court entirely within the exterior walls of a building. All other courts are outer courts. |
| Critical Level | C-L or C/L on a back flow prevention device or vacuum breaker is a point conforming to approved standards by testing lab. determines the minimum elevation above the flood level rim of the fixture or receptacle served where the device may be installed. |
| Cross-connection | any connection between two otherwise separate piping systems,one containing potable water and the other water which may be contamindated. |
| Cross-connection (Fire-protection system) | a piping connection from a siamese connection to a standard pipe to a sprinkler system |
| Dead-end | the extended portion of a pipe that is closed at one end to which no connections are made on the extended portion, thus permitting the stagnation of liquid or air therein. |
| Department Having Jurisdiction | the Administrative Authority and includes any other law enforcement agency concerned by any provision of this Code, whether such agency is specifically named or not. |
| Developed Length | the length of a pipe along its center line and fittings. |
| Diameter | unless specifically stated, the term "diameter" is the nominal diameter as designated commercially. |
| Inside Diameter | The meaning of I.D. |
| Oustide Diameter | The meaning of O.D |
| Domestic Sewage | the liquid and water-borne wastes derived from the ordinary living processes,free from industrial wastes and of such character that permit satisfactory disposal without special treatment. discharged into the public sewer or private sewage disposal system. |
| Double-bend fitting | a pipe fitting with adjacent reverse bends and shaped like the letter "S" |
| Double Offset | two offsets in succession or in series such that the center lines of the outside ends are in the same straight line. |
| Downspout | the vertical portion of a rainwater conductor |
| Drain | a pipe, which carries ground and surface waters, storm water or waste water into a building drainage system. |
| Drainage System | Includes all pipings within public or private premises which convey sewage or other liquid wastes to a legal point of disposal but does not include the mains of a public sewer system or a public sewage treatment or disposal plant. |
| Dry Vent | a vent that does not carry liquid or water-borne wastes. |
| Durham System | a term used to describe soil or waste system where all pipings are of threaded pipe, tubing or other such rigid construction using recessed drainage fittings to correspond to the types of piping. |
| Effective Opening | is the minimum cross-sectional area at the point of water supply discharge measured or expressed in terms of (1)diameter of a circle (2) if the opening is not circular, the diameter of a circle of equivalent cross-sectional area. |
| Existing Work | the on-going installation of the plumbing system or any part thereof which has been installed prior to the effective of this code. |
| Family | one person living alone or a group living together, whether related to each other by birth or not. |
| Faucet | a valve located at the end of a water pipe through of which water can be drawn from or held within the pipe. |
| Ferrule | a metallic sleeve, caulked or joined to an opening on a pipe, into which a plug is screwed that can be removed for cleaning or examining the interior of the pipe. |
| Fixture | a receptacle other than a trap attached to a plumbing system in which water or wastes may be collected or retained for ultimate discharge into the plumbing system. |
| Fixture Branch | the water supply pipe between the fixture supply ipe and the water-distributing pipe. |
| Fixture Drain | the drainpipe from the trap of a fixture to the junction of that drain with any other drainpipe. |
| Fixture Supply | a water supply pipe connecting the fixture with the fixture branch. |
| Fixture Unit | is an arbitrary quantity in terms of which the load producing effects or water requirements on the plumbing system of different kinds of plumbing fixtures are expressed in some arbitrarily chosen scale. |
| 28.3 liters per minute (1 cu.ft./minute) | One fixture unit is equivalent to a rate of flow at: |
| Flood Level | the level in a fixture at which water begins to overflow over the top or rim of the fixture. |
| Flood Level Rim | is the top edge of a receptacle from where water overflows |
| Flooded | a fixture is _______ when the liquid therein rises to the flood level rim. |
| Floor Area | the area included within the surrounding walls of a building (or portion thereof), exclusive of vent shafts and courts. |
| Flush Tank | a tank located above or integral with water closer, urinal or similar fixtures for flushing or removing excrements in the fixture. |
| Flush Valve | is a device located above or integral with water closet, urinal or similar fixtures for flushing or removing excrements in the fixtures. |
| Flushometer Tank | is integrated within an air accumulator vessel which is designed to discharge a predetermined quantity of water into fixtures for flushing purposes. |
| Flushometer Valve | is a device, which discharges a predetermined quanityt of water into fixtures for flushing purposes and is actuated by direct water pressure. |
| Gate Valve | a valve in which the flow of water is cut off by means of a circular disc fitted against machine-smoothed faces, at right angles to the direction of flow. |
| Globe Valve | a valve in which the flow of fluid is cut off by means of a circular disc that fits over and against the horizontal valve seat. The movement of the plane of disc is parallel to the normal direction of flow of water through the orifice. |
| Gooseneck | a return bend of small-sized pipe, one end of which is about 30 cm long and the other end is about 7.5 cm long. It is commonly used as a faucet for a pantry sink. Also, the term means the flexible tubing connection between a service pipe and a water main. |
| Grade | is the slope or fall of a line of pipe with reference to a horizontal plane. In drainage, it is usually expressed as the fall in centimeters per meter or percentage slope of pipe. |
| Grease Interceptor | an interceptor of atleast 3 cubic meters capacity to serve one or more fixtures and which is remotely located. |
| Grease Trap | a device designed to retain grease from one to a maximum of four fixtures. |
| Ground Water | the water that stands in or |
| Group Vent | a branch vent that performs its functions for two(2) or more traps |
| Height of Building | the vertical distance from the "Grade Line" to the highest point of the coping of a flat roof or to the top line of a mansard roof or to the average height of the highest gable of a pitch or hip-roof. |
| Horizontal Branch | is a drain pipe extending laterally from a soil or waste stack or building drain with or without vertical sections or branches, which receives the discharge from one or more fixture drains and conducts it to the soil or waste stack or to the bldg drain. |
| Horizontal Pipe | is any pipe or fitting installed in a horizontal position or which forms an angle of not more than forty-five (45) degrees with the horizontal plane. |
| House drain | is that part of the lowest horizontal piping of a plumbing system which receives the discharges from soil, waste and other drainage pipes inside of a building and conveys it to the house sewer outside of the building. |
| House Sewer | is that part of a plumbing system extending from the house drain at a point 0.60 meters from the outside face of the foundation wall of a building to the junction with the street sewer or to any point of discharge. |
| House Storm Sewer | is the pipeline from the building to the public or street storm drainage system. |
| Hubless Pipes | are cast iron soil pipes with plain ends connected together with bolted stainless steel bands and neoprene gaskets. |
| Indirect Waste Pipe | is a pipe that does not connect directly with the drainage system but conveys liquid by discharging into a plumbing fixture, interceptor or receptacle directly connected to the drainage system. |
| Individual Vent | is s pipe installed to vent a fixture trap and which connects with the vent system above the fixture served or terminates n the open air. |
| Industrial Waste | any and all liquid or water-borne waste from industrial or commercial processes, except domestic sewage. |
| I.P.S | means Iron Pipe Size |
| Insanitary | a condition contrary to sanitary principles or injurious to health |
| Interceptor | is a device designed and installed to separate and retain deleterious, hazardous or undesirable matters from normal wastes and permits normal sewage or liquid wastes to discharge into the disposal terminal by gravity. |
| Invert | The Lowest portion of the interior part of any pipe or conduit that is not vertical |
| Jurisdiction | the Administrative Authority under the DOH, DPWH, the Dpt. of Interior and Local Gvrmnt, the City Mayors of Chartered Cities, Envrnmtl Mgmnt Bureau (DENR) and the gvmnt entities that regulate the practice of Reg. and Licnsd MP. |
| Labeled | equipment or materials bearing a label of a listing agency. All labels shall be embossed, stamped or indelibly marked with stickers, glued on product indicating weight, specs and logo of manufacturer. |
| Lateral | in plumbing, a secondary pipeline. In sewerage, a common sewer to which no other branch sewer is connected. It receives sewage from building sewer service connections only. |
| Latrine | a water closet consisting of a continuous trough containing water. The trough extends under two or more adjacent seats. Prohibited by health authorities for permanent installations. |
| Lavatory | a fixture designed for the washing of the hands or face. |
| Leaching Cesspool | a cesspool that is not watertight |
| Leader | a pipe connected from building gutter to the downspout or conductor |
| Length of Pipe | is measures along its center line. |
| Liquid Waste | is the discharge from any fixture, appliance or appurtence in connection with a plumbing system which does not receive fecal matter. |
| Listed | equipment or materials included in a LIST published by a listing agency that maintain periodic inspection on curent production of listed equipmnt or materials and whose listing state complied with approve standards or tested suitable for specific manners. |
| Listing Agency | is an agency accepted by the administrative authority in the business of listing or labeling and which maintains a periodic inspection program. |
| Local Vent | a pipe or shaft to convey foul air from a plumbing fixture or a room to the outer air. |
| Loop or Circuit Vent | a vertical cent connection on a horizontal soil and waste pipe branch at a point downstream of the last fixture connection and turning to a horizontal line above the highest overflow level of the highest fixture connected thereat. |
| Lot | a single area of land legally recorded or validated by other means acceptable to the Administrative Authority where a building is situated or site of any work. together with yard, court, and unoccupied space. |
| Main | any system of continuous piping, which is the principal artery of the system where branches are connected. |
| Main Vent | the principal artery of the venting system to which vent branches are connected. |
| Manhole | a large opening in a sewer line or part of a plumbing system constructed with sufficient size for a man to gain access therein for maintenance purposes and facility for charges of line and/or grade of pipeline. |
| Master Plumber | a person technically and legally qualified and licensed to practice the profession of Master Plumbing without limitations in accordance with RA 1378, having passed the examinations conducted by PRC has a Certificate of Registration and current license. |
| May | the word "may" is a permissive term |
| Mobile Home Park Sewer | that part of the horizontal piping of sanitary drainage system which measures 0.6 meter downstream from the last mobile home site and conveys sewage to a public sewer, private sewer, individual sewage disposal system or other points of disposal. |
| NAMPAP | National Master Plumbers Association of the Philippines |
| Nuisance | Any public nuisance in common law. Whenever a work regulated in this code is dangerous to human life or detrimental to health and property; Inadequate or unsafe water supply and or sewage disposal system. |
| Oakum | hemp or old hemp rope soaked in oil or tar to make it waterproof. |
| Occupancy | The purpose for which a building is used or intended to be used. The term shall also include the building or room housing used. Change of occupancy is not interpreted to mean change of tenants or proprietors. |
| Offset | in a line of piping is a combination of elbows or bends, which brings one section of the pipe out of line but into a line parallel with the original section. |
| Person | a natural person, his heirs, executors, administrators or assigns, and also includes a firm, partnership or corporation, its or their successors or assigns or agents of any of the aforesaid. |
| PB | Polybutylene. Tube made of plastic material and colored black. The cross-sectional shape is normally oval and is denoted by its outside diameter or O.D. Normally used as water service connection from main to meter. |
| PE | Polyethylene. Tube made of plastic material and colored black. The cross-sectional shape is circular and is denoted by its outside diameter or O.D. |
| Pipe | a cylindrical conduit or conductor conforming to the particular dimensions commonly known as a "pipe size" and is denoted by its interior diameter or I.D. |
| Plumbing | the art and technique of installing pipes, fixtures and other apparatuses in buildings for bringing in the supply, liquids, substances and/or ingredients and removing them; and such water, liquid and other carried-wastes hazardous to health etc. |
| Plumbing Appliance | any one of a special class of device or equipment intended to perform a special plumbing function. Its operation and/or control may be dependent upon one or more energized components, such as motors,controls,heating elements etc. |
| Plumbing Appurtenance | a manufactured device or a prefabricated assembly or an on-the-job assembly of component parts, and serves as adjunct to the basic piping system and plumbing fixtures. |
| Plumbing Firm | a sole proprietorship or corporation composed of Registered and Licensed Master Plumbers together with allied professionals, with the Master Plumbers composing the majority of the membership. |
| Plumbing Fixtures | are approved-type installed receptacles, devices or appliances supplied with water or receive liquid or liquid-borne wastes and discharge such wastes into the drainage system to which they may be directly or indirectly connected. |
| Plumbing Official | The Administrative Authority of the officer charged with the administration and enforcement of the National Plumbing Code, or his regularly authorized deputy. |
| 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 joints and connections;etc. |
| Plumbing Unit | a minimum standard quantity of plumbing fixtures that discharge wastes into a plumbing installation including: (1) WM,(1) WC,(1) LAV,(1) Showerhead and drain for bathtub or shower stall,(1) KS,(1) Laundrytray and (3) FD and (4) Faucets/Hose bibb. |
| Pollution | an impairment of the quality of the water to a degree which creates hazard to the public health and adversely affects the aesthetic and potable qualities of waters for domestic use. |
| Potable Water | water satisfactory for drinking, culinary and domestic purposes and meets the requirements of the Philippines National Standards for Drinking Water. |
| Pressure | the normal force exerted by a homogeneous liquid or gas, per unit of area on the wall of the container. |
| Static Pressure | the pressure existing without any flow motion. |
| Residual Pressure | the pressure available at the fixture or water outlet; allowance is made for pressure drop due to friction loss, head, meter and other losses in the system during maximum demand period. |
| Primary Branch | of the building drain is the single sloping drain from the base of a stack to its junction with the main building drain. |
| Private or Private use | in classification of plumbing fixtures, "private" applies to plumbing fixtures in residences and apartments, to private bathrooms in hotels and hospitals, to rest rooms in commercial establishments for restricted use. |
| Private Sewage Disposal System | a septic tank with the effluent discharging into a subsurface disposal field, into one or more seepage pits or into a combination of subsurface disposal field and seepage pit others facilities may be permitted elsewhere in this code. |
| Private Sewer | a building sewer, which receives the discharge from more than one building drain and conveys it to a public sewer, private sewage disposal system, or other points of disposal. |
| Privy | an outhouse or structure used for the deposition of excrement |
| Privy Vault | a pit beneath a privy where excrement collects. |
| Public or Public Use | In the classification of plumbing fixtures, "public" or "public use" shall mean all buildings or structures that are not defined as private or private use. |
| Public Sewer | a common sewer directly controlled by public authority to which all abutters have equal rights of connections. |
| PVC | Polyvinyl Chloride. Potable water pipings are color-coded BLUE. Drainpipes are manufactured with toxic components and are color-coded gray, orange and brown. |
| Quality of Materials | all plumbing fixtures and materials used in any discharged or plumbing system or parts thereof shall be free from defects. |
| Receptor | an approved plumbing fixture or device of such materials shape and capacity to adequately receive the discharge from indirect waste pipes, constructed and located to be readily cleaned. |
| Regulating Equipment | include all valves and controls used in plumbing systems which are accessible. |
| Relief Vent | a vertical Vent line, the primary function of which is to provide additional circulation of air between the drainage and vent systems or act as an auxialiry vent on a specially designed system such as "yoke vent" connection between the soil & vent stacks |
| Repair | the reconstruction or renewal of any part of an existing building for its maintenance. The word "repair" or "repairs" shall not apply to any change of construction or occupancy. |
| Return Bend | an pen return bend usually made up two 90deg bends with inside and outside threads, flanged or welded fittings; and applied also to a one hundred eighty degrees bend in copper tubings. |
| Revent Pipe | Backvent Pipe |
| Riser | a water supply pipe, which extends vertically to one full story or more to convey water into pipe branches or plumbing fixtures. |
| Roughing-in | the installation of all pipings & fitting parts of the plumbing system, which can be completed prior to the installation of fixtures and accessories. Includes sanitary and storm drainage,tap,hot and chilled water supplies,gas pipings,vent pipings etc. |
| Sand Interceptor | See INterceptor |
| Sanitary Sewage | The wastewater containing human excrements and liquid household waste. Also called domestic sewage. |
| Sanitary Sewer | a sewer intended to receive sanitary sewage with or without pre-treated industrial wastes and without the admixture of rain or ground water. |
| Seal | the vertical distance between the dip and the crown weir of a trap. Also, the water in the trap between the dip and the crown weir. |
| Secondary Branch | any branch in a building drain other than the primary branch. |
| Seepage Pit | a loosely lined excavation in the ground, which receives the discharge of a septic tank and designed to permit the effluent from the septic tank to seep through pit bottom and sides. |
| Septic Tank | a water-tight receptacle which receives the discharge of a sanitary plumbing system or part thereof, designed to retain solids, digest organic matter through a period of detention and allow the liquids to discharge into the soil outside of the tank. |
| Service Pipe | the pipe from the street water main or other source of water supply to the building served. |
| Sewage | any waste water containing animal or vegetable matter in suspension or solution and may include liquids containing chemicals in solution. |
| Sewer | a pipe or conduit for carrying sewage and wastewater. |
| Sewerage or Sewerage Works | a comprehensive term, including all construction for collection, transportation, pumping, treatment and final disposition of sewage. |
| Shaft | a vertical opening through a building for elevators, dumbwaiters, lights, ventilation or similar purposes. |
| Siamese Connection | a hose fitting with clapper valves for combining the flow from two or more lines of hose into a single stream. |
| Siamese Connection | The inlet fitting of a fire standpipe located above groundlevel |
| Siphonage | a suction created by the flow of liquids in pipes. A pressure less than atmospheric. |
| Shall | the word "shall" denotes mandatory acceptation |
| Shielded Coupling | an approved elastomeric sealing gasket with an approved outer shield and a tightening mechanism |
| Single Family Dwelling | a building designed as a home by the owner of such building, and shall be the only dwelling located on a parcel of ground with the usual accessory building. |
| Size and type of Tubing | see Diamter |
| Soil Stack Pipe | a vertical soil pipe conveying fecal matter and wastewater |
| Soil Pipe | any pipe, which conveys the discharge of water closet, urinal or fixtures having similar functions, with or without the discharges from the other fixtures to the building drain or building sewer. |
| Soldered Joint | a pipe joint obtained by joining metal parts with metallic mixtures or alloys which melt at a temperature below 427 degrees centigrade and above 149 degrees centigrade |
| Spigot | the end of a pipe which fits into a bell. Also a word used synonymously with faucet |
| Special Wastes | wastes which require some special methods of handling such as the use of indirect waste piping and interceptors; corrosion-resistant piping; sand, oil or grease interceptors; condensers or other pretreatment facilities. |
| Stack | the vertical main of a system of soil, waste or vent pipings extending through one or more stories and extended thru the roof. |
| Standpipe | a vertical pipe, or a reservoir, into which water is pumped to give it at a head, classified as: Wet standpipe, Automatic Standpipe System, Manually-Operated Standpipe System and Dry Standpipe |
| Wet Standpipe | a Standpipe which water pressure is maintained at all times |
| Automatic Standpipe System | a Standpipe which operates automatically by opening a hose valve. |
| Manually-Operated Standpipe System | a Standpipe which remote control device at each hose station |
| Dry Standpipe | a Standpipe which having no permanent water inside the pipe. |
| Storm Water | that portion of the rainfall or other precipitation which runs off over the earth surface after a storm. |
| Storey | that portion of a building included between the upper surface of any floor and the upper surface of the floor next above. |
| Subsoil Drain | an underground drainpipe that receives only subsurface or seepage water and convey it to a sump |
| Stack Vent | the extension of a soil or waste stack above the highest horizontal drain connected to the stack. The uppermost end above the roof is called vent through roof (SVTR) |
| Sump | an approved tank or pit which receives sewage or wastewater and is located below the normal grade of the gravity system and must be emptied by mechanical means. |
| Supports | supports, hangers, anchors, brackets, cradles are devices for holdings and securing pipes and fixtures to walls, ceiling, floors or structural members. |
| Surface Water | that portion of rainfall or other precipitation which runs off over the surface of the ground. |
| Swimming Pool | a water basin used for swimming designed to accomodate many bathers at a time and properly connected to a disposal system, fills and draws water supply or provided with approved water purification and recirculation system. |
| Tailpiece | the pipe or tubing that connects the outlet of a plumbing |
| Tapped Tee | a tee with the branch tapped to receive a threaded pipe or fittings |
| Trap | a fitting or device designed and constructed to provide, when properly |
| Trap Arm | that portion of a fixture drain between a trap and the vent. |
| Trap Seal | the maximum vertical depth of liquid that a trap will retain, measured between the crown weir and the top of the dip of the trap. |
| Tube | a cylindrical conduit or conductor conforming to the particular dimensions known as "tube sizes" and denoted by its outside diameter or O.D. |
| Unconfined Space | a room having a volume equal to at least 1.4 cu.m. of the aggregate input rating of the fuel-burning appliance installed in that space. |
| Unit Vent | an arrangement of venting so installed that one vent pipe will serve two(2) traps |
| Unconfined Space | Rooms adjacent and open to the space where the appliance is installed, through openings not furnished with doors, are considered a part of the unconfined space. |
| Vacuum | an air pressure less than atmospheric. Also, implies siphonage in piping system. |
| Vacuum Breaker | see Backflow Preventer |
| Vent Pipe | a pipe or opening used for ensuring the circulation of air in a plumbing system and for relieving the negative pressure exerted on trap seals. |
| Vent Stack | the vertical vent pipe installed primarily for providing circulation of air to and from any part of the soil, waste of the drainage system. |
| Vent System | Pipes installed to provide flow of air to or from a drainage system of to provide a circulation of air within such system to protect trap seals from siphonage and backpressure. |
| Vertical Pipe | any pipe or fitting installed in a vertical position or which forms an angle of not more than forty-five (45) degrees with the vertical line. |
| Waste | see Liquid Waste and Industrial Waste |
| Waste pipe | a pipe, which conveys only wastewater or liquid waste free of fecal matter. |
| Water Treatment | a device which conditions or treats water supply |
| Water-Distributing Pipe | a pipe which conveys potable water from the building supply pipe to the plumbing fixtures and other water outlets. |
| Water Main | or street main is the water-supply pipe for public or community use. |
| Water Supply System | of a building or premises consists of the water service pipe, water supply line, water distributing pipe and the necessary branch pipes, fittings, valves and all appurtenances required for the supply of potable water. |
| Wet Vent | that portion of a vent pipe through where wastewater also flows through. |
| Welded Joint or Seam | any joint or seam obtained by the joining of metal parts in a plastic molten state. |
| Welder, Pipeline | a person who specializes in the welding of pipes and holds a valid certificate of competency from a recognized testing agency, based on the requirements of the regulating authority. |
| Wye | a hose connection with two-gated outlets permitting two connections of the same or smaller coupling diameter to be taken from a single supply line. |
| Yard | an open, unoccupied space, other than a court, unobstructed from the ground to the sky, except where specifically provided in this code. |
| Yoke Vent | a pipe connecting upward from a soil waste stack below the floor and below horizontal connection to an adjacent vent stack at a point above the floor and higher than highest spill level of fixtures for preventing pressure changes in the stacks. |
Created by:
Soulburn07