213.0 No definitions. – K –

2019 CALIFORNIA PLUMBING CODE 37

DEFINITIONS any other purpose or distributed to any other persons or parti es.

214.0Labeled. Equipment or materials bearing a label of a listing – L – agency (accredited conformity assessment body). See Listed (third-party certified).

[HCD 1 & HCD 2] “Labeled” means equipment or materi- als to which has been attached a label, symbol or other iden- tifying mark of an organization, approved by the Department, that maintains a periodic inspection program of production of labeled products, installations, equipment, or materials and by whose labeling the manufacturer indicates compliance with appropriate standards or performance in a specified manner. Lavatories in Sets. Two or three lavatories that are served by one trap. Lavatory [HCD 1 & HCD 2]. “Lavatory” shall mean a plumbing fixture used for washing the hands, arms, face and head. Leader. An exterior vertical drainage pipe for conveying storm water from roof or gutter drains. See Downspout. Levels of Sedation.Deep Sedation/Analgesia. A drug-induced depression

r._ Lavatories in Sets. Two or three lavatories that are served by one trap. Lavatory [HCD 1 & HCD 2]. “Lavatory” shall mean a plumbing fixture used for washing the hands, arms, face and head. Leader. An exterior vertical drainage pipe for conveying storm water from roof or gutter drains. See Downspout. Levels of Sedation.Deep Sedation/Analgesia. A drug-induced depression

of consciousness during which patients cannot be easily aroused but respond purposefully following repeated or painful stimulation. The ability to independently maintain ventilatory function may be impaired. Patients may require assistance in maintaining a patent airway, and spontaneous ventilation may be inadequate. Cardiovascular function is usually maintained. [NFPA 99:3.3.61.2] General Anesthesia. A drug-induced loss of consciousness during which patients are not arousable, even by painful stimulation. The ability to independently maintain ventilatory function is often impaired. Patients often require assistance in maintaining a patent airway, and positive pressure ventilation may be required because of depressed spontaneous ventilation or druginduced depression of neuromuscular function. Cardiovascular function may be impaired. [NFPA 99:3.3.61.1] Minimal Sedation (Anxiolysis). A drug induced state during which patients respond normally to verbal commands. Although cognitive function and coordination may be impaired, ventilatory and cardiovascular functions are unaffected. [NFPA 99:3.3.61.4] Moderate Sedation/Analgesia (Conscious Seda-tion). A drug-induced depression of consciousness during which patients respond purposefully to verbal commands, either alone or accompanied by light tactile stimulation. No interventions are required to maintain a patient airway, and spontaneous ventilation is adequate. Cardiovascular function is usually maintained. [NFPA 99:3.3.61.3] “Limited-density owner-built rural dwelling” shall mean any Limited-Density Owner-Built Rural Dwelling [HCD 1]. structure consisting of one or more habitable rooms intended or designed to be occupied by one family with facilities for living or sleeping, with use restricted to rural areas desig- nated by local jurisdiction in compliance with the require- ments of Health and Safety Code Section 17958.2.

ner-built rural dwelling” shall mean any_ Limited-Density Owner-Built Rural Dwelling [HCD 1]. structure consisting of one or more habitable rooms intended or designed to be occupied by one family with facilities for living or sleeping, with use restricted to rural areas desig- nated by local jurisdiction in compliance with the require- ments of Health and Safety Code Section 17958.2.

Liquefied Petroleum Gas (LP-Gas) Facilities. Liquefied petroleum gas (LP-Gas) facilities include tanks, containers, container valves, regulating equipment, meters, appurtenances, or any combination thereof for the storage and supply of liquefied petroleum gas for a building, structure, or premises. Liquid Waste. The discharge from a fixture, appliance, or appurtenance in connection with a plumbing system that does not receive fecal matter. Listed [HCD 1 & HCD 2]. “Listed” means all products that appear in a list published by an approved testing or listing agency. For additional information, see Health and Safety Code Section 17920(h). Listed (Third-Party Certified). Equipment or materials included in a list published by a listing agency (accredited conformity assessment body) that maintains periodic inspection of current production of listed equipment or materials and whose listing states either that the equipment or material complies with approved standards or has been tested and found suitable for use in a specified manner. Listing Agency. An agency accredited by an independent and authoritative conformity assessment body to operate a material and product listing and labeling (certification) system and that are accepted by the Authority Having Jurisdiction, which is in the business of listing or labeling. The system includes initial and ongoing product testing, a periodic inspection on current production of listed (certified) products, and that makes available a published report of such listing in which specific information is included that the material or product is in accordance with applicable standards and found safe for use in a specific manner.

which is in the business of listing or labeling. The system includes initial and ongoing product testing, a periodic inspection on current production of listed (certified) products, and that makes available a published report of such listing in which specific information is included that the material or product is in accordance with applicable standards and found safe for use in a specific manner.

[HCD 1 & HCD 2] “Listing Agency” means an agency approved by the department that is in the business of listing and labeling products, materials, equipment, and installa- tions tested by an approved testing agency, and that main- tains a periodic inspection program on current production of listed products, equipment, and installations, and that, at least annually, makes available a published report of these listings. For additional information, see Health and Safety Code Sec- tion 17920(i). Lot. A single or individual parcel or area of land legally recorded or validated by other means acceptable to the Authority Having Jurisdiction on which is situated a building or which is the site of any work regulated by this code, together with the yards, courts, and unoccupied spaces legally required for the building or works, and that is owned by or is in the lawful possession of the owner of the building or works. Low Hazard. See Pollution. Low VOC Cement [HCD 1 & HCD 2]. Cement with a volatile organic compound (VOC) content of less than or equal to 490 g/L for CPVC Cement, 510 g/L for PVC Cement, and 325 g/L for ABS Cement, as determined by the South Coast Air Quality Management District’s Laboratory Methods of Analysis for Enforcement Samples, Method 316A. Low VOC One-Step Cement [HCD 1 & HCD 2]. Listed solvent cements that do not require the use of primer with a volatile organic compound (VOC) content of less than or equal

38 2019 CALIFORNIA PLUMBING CODE

DEFINITIONS

to 490 g/L for CPVC Cement, 510 g/L for PVC Cement, and 325 g/L for ABS Cement, as determined by the South Coast Air Quality Management District’s Laboratory Methods of Analy- sis for Enforcement Samples, Method 316A. Low VOC Primer [HCD 1 & HCD 2]. Primer with a volatile organic compound (VOC) content of less than or equal to 550 g/L, as determined by the South Coast Air Quality Manage- ment District’s Laboratory Methods of Analysis for Enforce- ment Samples, Method 316A.

the South Coast Air_ Quality Management District’s Laboratory Methods of Analy- sis for Enforcement Samples, Method 316A. Low VOC Primer [HCD 1 & HCD 2]. Primer with a volatile organic compound (VOC) content of less than or equal to 550 g/L, as determined by the South Coast Air Quality Manage- ment District’s Laboratory Methods of Analysis for Enforce- ment Samples, Method 316A.

215.0Macerating Toilet System.– M – A system comprised of a sump with macerating pump and with connections for a water closet and other plumbing fixtures, which is designed to accept, grind and pump wastes to an approved point of discharge. Main. The principal artery of a system of continuous piping to which branches may be connected. Main Sewer. See Public Sewer. Main Vent. The principal artery of the venting system to which vent branches may be connected. May. A permissive term. Medical Air. For the purposes of this code, medical air is air supplied from cylinders, bulk containers, or medical air compressors, or reconstituted from oxygen USP and oil-free, dry nitrogen NF. [NFPA 99:3.3.96] Medical Gas. A patient medical gas or medical support gas.

[NFPA 99:3.3.99]

Manifold. A device for connecting the outlets of one or more gas cylinders to the central piping system for that specific gas. [NFPA 99:3.3.93] Medical Gas System. An assembly of equipment and piping for the distribution of nonflammable medical gases such as oxygen, nitrous oxide, compressed air, carbon dioxide, and helium. [NFPA 99:3.3.100] Medical Support Gas. Nitrogen or instrument air used for any medical support purpose (e.g., to remove excess moisture from instruments before further processing, or to operate medical-surgical tools, air-driven booms, pendants, or similar applications) and, if appropriate to the procedures, used in laboratories and are not respired as part of any treatment. Medical support gas falls under the general requirements for medical gases. [NFPA 99:3.3.101] Medical-Surgical Vacuum. A method used to provide a source of drainage, aspiration, and suction in order to remove body fluids from patients. [NFPA 99:3.3.102] Medical-Surgical Vacuum System. An assembly of central vacuum-producing equipment and a network of piping for patient suction in medical, medical-surgical, and waste anesthetic gas disposal (WAGD) applications. [NFPA 99:3.3.103] Mobile Home Park Sewer. That part of the horizontal piping of a drainage system that begins 2 feet (610 mm) downstream from the last mobile home site and conveys it to a public sewer, private sewer, private sewage disposal system, or other point of disposal.

work of piping for patient suction in medical, medical-surgical, and waste anesthetic gas disposal (WAGD) applications. [NFPA 99:3.3.103] Mobile Home Park Sewer. That part of the horizontal piping of a drainage system that begins 2 feet (610 mm) downstream from the last mobile home site and conveys it to a public sewer, private sewer, private sewage disposal system, or other point of disposal.

Mulch. Organic materials, such as wood chips and fines, tree bark chips, and pine needles that are used in a mulch basin to conceal gray water outlets and permit the infiltration of gray water. Mulch Basin [BSC-CG & HCD 1]. A subsurface type of irrigation or disposal field filled with mulch or other approved permeable material of sufficient depth, length, and width to prevent ponding or runoff. A mulch basin may include a basin around a tree, a trough along a row of plants, or other shapes necessary for irrigation or disposal.

216.0Nitrogen, NF. Nitrogen complying as a minimum, with – N – nitrogen NF. [NFPA 99:3.3.109.1] Nonwater Supplied Urinal [HCD 1]. A plumbing fixture which does not require water supply and is designed to receive and convey the uninhibited flow of liquid waste to the gravity drainage system. Nuisance. Includes, but is not limited to: (1) A public nuisance known at common law or in equity

jurisprudence.

(1) A public nuisance known at common law or in equity

jurisprudence. (2) Where work regulated by this code is dangerous to

human life or is detrimental to health and property.

(2) Where work regulated by this code is dangerous to

human life or is detrimental to health and property. (3) Inadequate or unsafe water supply or sewage disposal

system.

(3) Inadequate or unsafe water supply or sewage disposal

system.

[HCD 1 & HCD 2] “Nuisance” shall mean any nuisance as defined in Health and Safety Code Section 17920(l). Notes: 1. For applications subject to the Mobilehome Parks Act as referenced in Section 1.8.3.2.2 of this code, refer to Cal- ifornia Code of Regulations, Title 25, Division 1, Chap- ter 2 for the definition of “Nuisance”. 2. For applications subject to the Special Occupancy Parks Act as referenced in Section 1.8.3.2.3 of this code, refer to California Code of Regulations, Title 25, Division 1, Chapter 2.2 for the definition of “Nuisance”.

217.0Offset. A combination of elbows or bends in a line of piping – O – that brings one section of the pipe out of line but into a line parallel with the other section. Oil Interceptor. See Interceptor (Clarifier). On-Site Treated Nonpotable Water [BSC-CG & HCD1]. Nonpotable water that has been collected, treated, and intended to be used on-site and is suitable for direct benefi- cial use. Sources for on-site treated nonpotable water include, but are not limited to, gray water; rainwater; stormwater; reclaimed (recycled) water; cooling tower blow-down water; and foundation drainage.

218.0Patient Care Space. Any space of a health care facility – P – wherein patients are intended to be examined or treated.

[NFPA 99:3.3.127]

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DEFINITIONS any other purpose or distributed to any other persons or parti es.

Category 1 Space. Space in which failure of equipment or a system is likely to cause major injury or death of patients, staff, or visitors. [NFPA 99:3.3.127.1] Category 2 Space. Space in which failure of equipment or a system is likely to cause minor injury to patients, staff, or visitors. [NFPA 99:3.3.127.2] Category 3 Space. Space in which the failure of equipment or a system is not likely to cause injury to patients, staff, or visitors but can cause discomfort.

to cause major injury or death of patients, staff, or visitors. [NFPA 99:3.3.127.1] Category 2 Space. Space in which failure of equipment or a system is likely to cause minor injury to patients, staff, or visitors. [NFPA 99:3.3.127.2] Category 3 Space. Space in which the failure of equipment or a system is not likely to cause injury to patients, staff, or visitors but can cause discomfort.

[NFPA 99:3.3.127.3] Category 4 Space. Space in which failure of equipment or a system is not likely to have a physical impact on patient care. [NFPA 99:3.3.127.4] Patient Medical Gas. Piped gases such as oxygen, nitrous oxide, helium, carbon dioxide, and medical air that are used in the application of human respiration and the calibration of medical devices used for human respiration. [NFPA 99:3.3.131] PB. Polybutylene. PE. Polyethylene. PE-AL-PE. Polyethylene-aluminum-polyethylene. PE-RT. Polyethylene of raised temperature. Penetration Firestop System. A specific assemblage of field-assembled materials, or a factory-made device, which has been tested to a standard test method and, where installed properly on penetrating piping materials, is capable of maintaining the fire- resistance rating of assemblies penetrated. Person. A natural person, his heirs, executor, administrators, or assigns and shall also include a firm, corporation, municipal or quasi-municipal corporation, or governmental agency. The singular includes the plural, male includes female. PEX. Cross-linked polyethylene. PEX-AL-PEX. Cross-linked polyethylene–aluminum-crosslinked polyethylene. Pipe. A cylindrical conduit or conductor is conforming to the dimensions commonly known as “pipe size.” Plumbing. The business, trade, or work having to do with the installation, removal, alteration, or repair of plumbing systems or parts thereof. Plumbing Appliance. A special class of device or equipment that is intended to perform a special plumbing function. Its operation, control, or both may be dependent upon one or more energized components, such as motors, controls, heating elements, or pressure- or temperature-sensing elements. Such device or equipment may operate automatically through one or more of the following actions: a time cycle, a temperature range, a pressure range, a measured volume or weight; or the device or equipment may be manually adjusted or controlled by the user or operator. Plumbing Appurtenance. A manufactured device, a prefabricated assembly, or an on-the-job assembly of component parts that is an adjunct to the basic piping system and plumbing fixtures. An appurtenance demands no additional water supply, nor does it add a discharge load to a fixture or the drainage system. It performs some useful function in the operation, maintenance, servicing, economy, or safety of the plumbing system.

manufactured device, a prefabricated assembly, or an on-the-job assembly of component parts that is an adjunct to the basic piping system and plumbing fixtures. An appurtenance demands no additional water supply, nor does it add a discharge load to a fixture or the drainage system. It performs some useful function in the operation, maintenance, servicing, economy, or safety of the plumbing system.

Plumbing Fixture. An approved type installed receptacle, device or appliance that is supplied with water or that receives liquid or liquid-borne wastes and discharges such wastes into the drainage system to which it may be directly or indirectly connected. Industrial or commercial tanks, vats, and similar processing equipment are not plumbing fixtures, but may be connected to or discharged into approved traps or plumbing fixtures where and as otherwise provided for elsewhere in this code. Plumbing Official. See Authority Having Jurisdiction. Plumbing System. Includes all potable water, alternate water sources, building supply, and distribution pipes; all plumbing fixtures and traps; all drainage and vent pipes; and all building drains and building sewers, including their respective joints and connections, devices, receptors, and appurtenances within the property lines of the premises and shall include potable water piping, potable water treating or using equipment, medical gas and medical vacuum systems, liquid and fuel gas piping, and water heaters and vents for same. Plumbing Vent. A pipe provided to ventilate a plumbing system, to prevent trap siphonage and backpressure, or to equalize the air pressure within the drainage system. Plumbing Vent System. A pipe or pipes installed to provide a flow of air to or from a drainage system or to provide a circulation of air within such system to protect trap seals from siphonage and backpressure. Pollution. An impairment of the quality of the potable water to the degree that does not create a hazard to the public health but which does adversely and unreasonably affect the aesthetic qualities of such potable water for domestic use. Also, defined as “Low Hazard.” Potable Water. Water that is satisfactory for drinking, culinary, and domestic purposes and that meets the requirements of the Health Authority Having Jurisdiction. PP. Polypropylene. Pressure. The normal force exerted by a homogeneous liquid or gas, per unit of area, on the wall of the container.

esthetic qualities of such potable water for domestic use. Also, defined as “Low Hazard.” Potable Water. Water that is satisfactory for drinking, culinary, and domestic purposes and that meets the requirements of the Health Authority Having Jurisdiction. PP. Polypropylene. Pressure. The normal force exerted by a homogeneous liquid or gas, per unit of area, on the wall of the container.

Residual Pressure. The pressure available at the fixture or water outlet after allowance is made for pressure drop due to friction loss, head, meter, and other losses in the system during maximum demand periods. Static Pressure. The pressure is existing without any flow. Pressure-Balancing Valve. A mixing valve that senses incoming hot and cold water pressures and compensates for fluctuations in either to stabilize outlet temperature. Pressure-Lock-Type Connection. A mechanical connection that depends on an internal retention device to prevent pipe or tubing separation. The connection is made by inserting the pipe or tubing into the fitting to a prescribed depth. Private or Private Use. Applies to plumbing fixtures in residences and apartments, to private bathrooms in hotels and hospitals, and to restrooms in commercial establishments where the fixtures are intended for the use of a family or an individual.

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DEFINITIONS

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 or of such other facilities as may be permitted under the procedures set forth elsewhere in this code. Private Sewer. A building sewer that receives the discharge from more than one building drain and conveys it to a public sewer, private sewage disposal system, or another point of disposal. Proportioning System for Medical Air USP. A central supply that produces medical air (USP) reconstituted from oxygen USP and nitrogen NF by means of a mixer or blender.

[NFPA 99:3.3.96.1] Public or Public Use. Applies to plumbing fixtures that are not defined as private or private use. Public Sewer. A common sewer directly controlled by public authority. Push Fit Fitting. A mechanical fitting where the connection is assembled by pushing the tube or pipe into the fitting and is sealed with an o-ring. PVC. Polyvinyl Chloride. PVDF. Polyvinylidene Fluoride.

219.0Quick-Disconnect Device.– Q – A hand-operated device that provides a means for connecting and disconnecting a hose to a water supply, and that is equipped with a means to shut off the water supply when the device is disconnected. Quick-Disconnect Device (Fuel Gas). A hand-operated device that provides a means for connecting and disconnecting an appliance or an appliance connector to a gas supply, and that is equipped with an automatic means to shut off the gas supply when the device is disconnected. [NFPA 54:3.3.28.3]

upply, and that is equipped with a means to shut off the water supply when the device is disconnected. Quick-Disconnect Device (Fuel Gas). A hand-operated device that provides a means for connecting and disconnecting an appliance or an appliance connector to a gas supply, and that is equipped with an automatic means to shut off the gas supply when the device is disconnected. [NFPA 54:3.3.28.3]

220.0Rainwater [BSC-CG & HCD 1]. – R – Precipitation on any pub- lic or private parcel that has not entered an offsite storm drain system or channel, a flood control channel, or any other stream channel, and has not previously been put to beneficial use. Rainwater Catchment System [BSC-CG & HCD 1]. A facility designed to capture, retain, and store rainwater flow- ing off a building, parking lot, or any other manmade imper- vious surface for subsequent onsite use. Rainwater catchment system is also known as “Rainwater Harvesting System” or “Rainwater Capture System.” Rainwater Storage Tank. The central component of the rainwater catchment system. Also, known as a cistern or rain barrel. Receptor. An approved plumbing fixture or device of such material, shape, and capacity as to adequately receive the discharge from indirect waste pipes, so constructed and located as to be readily cleaned. Receiving Landscape [BSC-CG & HCD 1]. Includes features such as soil, basins, swales, mulch, and plants.

t of the rainwater catchment system. Also, known as a cistern or rain barrel. Receptor. An approved plumbing fixture or device of such material, shape, and capacity as to adequately receive the discharge from indirect waste pipes, so constructed and located as to be readily cleaned. Receiving Landscape [BSC-CG & HCD 1]. Includes features such as soil, basins, swales, mulch, and plants.

Reclaimed (Recycled) Water [BSC-CG, HCD 1 &DWR]. Nonpotable water that meets California State Water Resources Control Board statewide uniform criteria for dis- infected tertiary recycled water. Reclaimed (recycled) water is also known as “recycled water” or “reclaimed water”. Recycled Water Supply System. [BSC-CG, HCD 1, &DWR] The building supply pipe, the water distribution pipes, and the necessary connecting pipes, fittings, control valves, backflow prevention devices, and all appurtenances carrying or supplying reclaimed (recycled) water in or adjacent to the building or within the premises. Registered Design Professional. An individual who is registered or licensed by the laws of the state to perform such design work in the jurisdiction. Regulating Equipment. Includes valves and controls used in a plumbing system that is required to be accessible or readily accessible. Relief Vent. A vent, the primary function of which is to provide circulation of air between drainage and vent systems or to act as an auxiliary vent on a specially designed system. Remote Outlet. Where used for sizing water piping, it is the furthest outlet dimension, measuring from the meter, either the developed length of the cold-water piping or through the water heater to the furthest outlet on the hot-water piping. Rim. See Flood-Level Rim. Riser. A water supply pipe that extends vertically one full story or more to convey water to branches or fixtures. Roof Drain. A drain installed to receive water collecting on the surface of a roof and to discharge it into a leader, downspout, or conductor. Roof Washer. A device or method for removal of sediment and debris from a collection surface by diverting initial rainfall from entry into the cistern(s). Also, known as a first flush device. Roughing-In. The installation of all parts of the plumbing system that can be completed prior to the installation of fixtures. This includes drainage, water supply, gas piping, vent piping, and the necessary fixture supports.

221.0Sand Interceptor. See Interceptor (Clarifier). – S – Scavenging. Evacuation of exhaled mixtures of oxygen and nitrous oxide. [NFPA 99:3.3.147] Scrub Sink [OSHPD 1, 1R, 2, 3, 4 & 5]. Is a sink used to wash and scrub the hands and arms during the septic prepa- ration for surgery and equipped with a supply spout and con- trols as required for a handwashing fixture. Sensor operated fixtures shall be capable of functioning during loss of normal power. SDR. An abbreviation for “standard dimensional ratio,” which is the specific ratio of the average specified outside diameter to the minimum wall thickness for outside controlled diameter plastic pipe.

ion for surgery and equipped with a supply spout and con-_ trols as required for a handwashing fixture. Sensor operated fixtures shall be capable of functioning during loss of normal power. SDR. An abbreviation for “standard dimensional ratio,” which is the specific ratio of the average specified outside diameter to the minimum wall thickness for outside controlled diameter plastic pipe.

2019 CALIFORNIA PLUMBING CODE 41

DEFINITIONS any other purpose or distributed to any other persons or parti es.

Seam, Welded. See Joint, Welded. Seepage Pit. A lined excavation in the ground which receives the discharge of a septic tank so designed as to permit the effluent from the septic tank to seep through its bottom and sides. Septic Tank. A watertight receptacle that receives the discharge of a drainage system or part thereof, designed and constructed so as to retain solids, digest organic matter through a period of detention, and allow the liquids to discharge into the soil outside of the tank through a system of open joint piping or a seepage pit meeting the requirements of this code. Service Piping. The piping and equipment between the street gas main and the gas piping system inlet that is installed by, and is under the control and maintenance of, the serving gas supplier. Sewage. Liquid waste containing animal or vegetable matter in suspension or solution and that may include liquids containing chemicals in solution. Sewage Ejector. A device for lifting sewage by entraining it on a high-velocity jet stream, air, or water. Sewage Pump. A permanently installed mechanical device, other than an ejector, for removing sewage or liquid waste from a sump. Shall. Indicates a mandatory requirement. Shielded Coupling. An approved elastomeric sealing gasket with an approved outer shield and a tightening mechanism. Shock Arrester. See Water Hammer Arrester. Should. Indicates a recommendation or that which is advised but not required. Simple System [BSC & HCD 1]. A gray water system serving one-and two-family dwellings, townhouses, or other occupancies with a discharge of 250 gallons (947 L) per day or less. Simple systems exceed a clothes washer system. Size and Type of Tubing. See Diameter. Slip Joint. An adjustable tubing connection, consisting of a compression nut, a friction ring, and a compression washer, designed to fit a threaded adapter fitting or a standard taper pipe thread. Slope. See Grade. Soil Pipe. A pipe that conveys the discharge of water closets, urinals, clinical sinks, or fixtures having similar functions of collection and removal of domestic sewage, with or without the discharge from other fixtures to the building drain or building sewer. Special Wastes. Wastes that require some special method of handling, such as the use of indirect waste piping and receptors, 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 piping extending through one or more stories. Stack Vent. The extension of soil or waste stacks above the highest horizontal drain connected to the stack. Standard. A document, the main text of which contains only mandatory provisions using the word “shall” to indicate requirements and which is in a form generally suitable for

Stack.* The vertical main of a system of soil, waste, or vent piping extending through one or more stories. Stack Vent. The extension of soil or waste stacks above the highest horizontal drain connected to the stack. Standard. A document, the main text of which contains only mandatory provisions using the word “shall” to indicate requirements and which is in a form generally suitable for

mandatory reference by another standard or code or for adoption into law. Nonmandatory provisions shall be located in an appendix, footnote, or fine print note and are not to be considered a part of the requirements of a standard. Standard Cubic Feet per Minute (SCFM). Volumetric flow rate of gas in units of standard cubic feet per minute.

[NFPA 99:3.3.156] Station Inlet. An inlet point in a piped medical/surgical vacuum distribution system at which the user makes connections and disconnections. [NFPA 99:3.3.157] Station Outlet. An outlet point in a piped medical gas distribution system at which the user makes connections and disconnections. [NFPA 99:3.3.158] Sterilizer. A piece of equipment that disinfects instruments and equipment by way of heat. Storm Drain. See Building Drain (Storm). Storm Sewer. A sewer used for conveying rainwater, surface water, condensate, cooling water, or similar liquid wastes. Subsoil Drain. A drain that collects subsurface or seepage water and conveys it to a place of disposal. Subsoil Irrigation Field. Gray water irrigation field installed in a trench within the layer of soil below the topsoil. This system is typically used for irrigation of deep rooted plants. Subsurface Irrigation Field. Gray water irrigation field installed below finished grade within the topsoil. Sump. An approved tank or pit that receives sewage or liquid waste and which is located below the normal grade of the gravity system and which must be emptied by mechanical means. Supports. Supports, hangers, and anchors are devices for properly supporting and securing pipe, fixtures, and equipment. Surge Tank. A reservoir to modify the fluctuation in flow rates to allow for uniform distribution of gray water to the points of irrigation.

222.0T Rating. The time period that the penetration firestop sys- – T – tem, including the penetrating item, limits the maximum temperature rise of 325°F (181°C) above its initial temperature through the penetration on the nonfire side, where tested in accordance with ASTM E814 or UL 1479. Tailpiece. The pipe or tubing that connects the outlet of a plumbing fixture to a trap. Testing Agency [HCD 1]. See “Approved Testing Agency”. Thermostatic (Temperature Control) Valve. A mixing valve that senses outlet temperature and compensates for fluctuations in incoming hot or cold water temperatures. Toilet [OSHPD 1, 1R, 2, 3, 4 & 5]. A fixture within a toilet room which is used for defecation or urination. Toilet Facility. A room or space containing not less than one lavatory and one water closet.

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DEFINITIONS

Valve, Pressure-Relief. A pressure-actuated valve held closed by a spring or other means and designed automatically to relieve pressure in excess of its setting. Valve, Riser. A valve at the base of a vertical riser that isolates that riser. Valve, Service. A valve is serving horizontal piping extending from a riser to a station outlet or inlet. Valve, Source. A single valve at the source that controls a number of units that makes up the source. Valve, Zone. A valve that controls the gas or vacuum to a particular area. Vent. See Plumbing Vent; Dry Vent; Wet Vent. Vent Connector, Gas. That portion of a gas venting system that connects a listed gas appliance to a gas vent and is installed within the space or area in which the appliance is located. Vent Offset. An arrangement of two or more fittings and pipe installed for the purpose of locating a vertical section of the vent pipe in a different but parallel plane with respect to an adjacent section of a vertical vent pipe. [NFPA 54:3.3.102] Vent Pipe. See Plumbing Vent. Vent Stack. The vertical vent pipe installed primarily for the purpose of providing circulation of air to and from any part of the drainage system. Vent System. See Plumbing Vent System. Vented Flow Control Device. A device installed upstream from the hydromechanical grease interceptor having an orifice that controls the rate of flow through the interceptor, and an air intake (vent) downstream from the orifice, which allows air to be drawn into the flow stream. Venting System. A continuous open passageway from the flue collar or draft hood of an appliance to the outdoors for the purpose of removing flue or vent gases. [NFPA 54:3.3.95.7]

Vent, Gases. A listed factory-made vent pipe and vent fittings for conveying flue gases to the outdoors. Type B Gas Vent. A factory-made gas vent listed by a nationally recognized testing agency for venting listed or approved appliances equipped to burn only gas. Type BW Gas Vent. A factory-made gas vent listed by a nationally recognized testing agency for venting listed or approved gas-fired vented wall furnaces. Type L Gas Vent. A venting system consisting of listed vent piping and fittings for use with oil-burning appliances listed for use with Type L or with listed gas appliances. Vertical Pipe. A pipe or fitting that is installed in a vertical position or that makes an angle of not more than 45 degrees (0.79 rad) with the vertical.

225.0Wall-Hung Water Closet.– W – A water closet installed in such a way that no part of the water closet touches the floor. Waste. See Liquid Waste and Industrial Waste. Waste Pipe. A pipe that conveys only liquid waste, free of fecal matter.

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Toilet Room [OSHPD 1, 1R, 2, 3, 4 & 5]. A room within or on the premises containing water closets, urinals, and other required facilities. Transition Gas Riser. A listed or approved section or sections of pipe and fittings used to convey fuel gas and installed in a gas piping system to provide a transition from belowground to aboveground. Trap. A fitting or device so designed and constructed as to provide, where properly vented, a liquid seal that will prevent the back passage of air without materially affecting the flow of sewage or wastewater through it. Trap Arm. Those portions of a fixture drain between a trap and the vent. Trap Primer. A device and system of piping that maintains a water seal in a remote trap. Trap Seal. The vertical distance between the crown weir and the top dip of the trap.

Crown Weir (Trap Weir). The lowest point in the cross-section of the horizontal waterway at the exit of the trap. Top Dip (of the trap). The highest point in the internal cross-section of the trap at the lowest part of the bend (inverted siphon). By contrast, the bottom dip is the lowest point in the internal cross-section. Treated Gray Water [HCD 1]. Nonpotable water meeting the definition of “gray water” collected and treated on-site suitable for direct beneficial use.

223.0Unsanitary. See Insanitary. – U – UPC [HCD 1]. “UPC” is the latest edition of the Uniform Plumbing Code, published by the International Association of Plumbing and Mechanical Officials. Urinal, Hybrid. A urinal that conveys waste into the drainage system without the use of water for flushing and automatically performs a drain-cleansing action after a predetermined amount of time. User Outlet. See Station Outlet.

224.0Vacuum. A pressure less than that exerted by the atmos- – V – phere. Vacuum Breaker. See Backflow Preventer. Vacuum Relief Valve. A device that prevents excessive vacuum in a pressure vessel. Vacuum System-Level 1. A system consisting of central vacuum-producing equipment with pressure and operating controls, shutoff valves, alarm warning systems, gauges, and a network of piping extending to and terminating with suitable station inlets at locations where patient suction could be required. Valve, Isolation. A valve that isolates one piece of equipment from another.

2019 CALIFORNIA PLUMBING CODE 43

DEFINITIONS any other purpose or distributed to any other persons or parti es.

Water Closet [HCD 1]. “Water Closet” is a plumbing fix- ture (which may be used for both solids and liquids) in which the waste matter is removed by flushing with water. Water-Conditioning or Treating Device. A device that conditions or treats a water supply to change its chemical content or remove suspended solids by filtration. Water Distribution Pipe. In a building or premises, a pipe that conveys potable water from the building supply pipe to the plumbing fixtures and other water outlets. Water Hammer Arrester. A device designed to provide protection against hydraulic shock in the building water supply system. Water Heater or Hot Water Heating Boiler. An appliance designed primarily to supply hot water for domestic or commercial purposes and equipped with automatic controls limiting water temperature to a maximum of 210°F (99°C). Water Main (Street Main). A water supply pipe for public or community use. Water Supply System. The building supply pipe, the water distribution pipes, and the necessary connecting pipes, fittings, control valves, backflow prevention devices, and all appurtenances carrying or supplying potable water in or adjacent to the building or premises. Water/Wastewater Utility. A public or private entity which may treat, deliver or do both functions to reclaimed (recycled) water, potable water, or both to wholesale or retail customers. Welder, Pipe. A person who specializes in the welding of pipes and holds a valid certificate of competency from a recognized testing laboratory, based on the requirements of the ASME Boiler and Pressure Vessels code, Section IX. Wet Procedure Locations. The area in a patient care space where a procedure is performed that is normally subject to wet conditions while patients are present, including standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff. [NFPA 99:3.3.171] Wet Vent. A vent that also serves as a drain. Whirlpool Bathtub. A bathtub fixture equipped and fitted with a circulating piping system designed to accept, circulate, and discharge bathtub water upon each use.