Word

Definition

ACCEPTED ENGINEERING PRACTICE

That which conforms to accepted principles, tests or standards of nationally recognized technical or scientific authorities.

ACCESS (to

That which enables a fixture, appliance or equipment to be reached by ready access or by a means that first requires the removal or movement of a panel, door or similar obstruction.  see "Ready access"

ACCESS COVER

A removable plate, usually secured by bolts or screws, to permit access to a pipe or pipe fitting for the purposes of inspection, repair or cleaning.

ACCESSIBLE

Having access to, but which first may require the removal of a panel, door or similar covering of the item described. See READILY Accessible.

ADAPTER FITTING

An approved connecting device that suitably and properly joins or adjusts pipes and fittings which do not otherwise fit together.

ADMINISTRATIVE AUTHORITY

The individual, official, board, department, or agency established and authorized by a state, county, city or political subdivision created by law to administer and enforce the provision of the code as adopted or amended.

AIR ADMITTANCE VALVE

One-way valve designed to allow air to enter the plumbing drainage system when negative pressures develop in the piping system. The device shall close by gravity and seal the vent terminal at zero differential pressure (no flow conditions) and under positive internal pressures. The purpose of an air admittance valve is to provide a method of allowing air to enter the plumbing drainage system without the use of a vent extended to open air and to prevent sewer gases from escaping into a building.

AIR BREAK (DRAINAGE SYSTEM)

A piping arrangement in which a drain from a fixture, appliance or device discharges indirectly into another fixture, receptacle or interceptor at a point below the flood level rim.

AIR CONDITIONING

The treatment of air so as to control simultaneously its temperature, humidity, cleanness, and distribution to meet the requirements of a conditioned space.

AIR GAP (DRAINAGE SYSTEM)

The unobstructed vertical distance through the free atmosphere between the outlet of the waste pipe and the flood level rim of the receptacle into which the waste pipe is discharging.

AIR GAP (WATER DISTRIBUTION SYSTEM)

The unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture or other device and the flood level rim of the receptacle.

AIR MIXER

That portion of an injection (Bunsen) type burner into which the primary air is introduced.

AIR SHUTTER

An adjustable device for varying the size of the primary air inlet or inlets.

Also see CONSUMERS' GAS PIPING

ALTERNATIVE ENGINEERED DESIGN

A plumbing system that performs in accordance with the intent of Chapters P3 through P13 and provides an equivalent level of performance for the protection of public health, safety and welfare. The system design is not specifically regulated by Chapters P3 through P13.

ANCHORS

See "Supports."

AND/OR

In a choice of two code provisions, signifies that use of both provisions will satisfy the code requirement and use of either provision is acceptable also.

ANTISIPHON

A term applied to valves or mechanical devices that eliminate siphonage.

APPLIANCE EQUIPMENT

Any device which utilizes gas as a fuel or raw material to produce light, heat, power, refrigeration, air conditioning or to generate a chemical atmosphere.

APPLIANCE FLUE

The flue passages within the appliance.

APPLIANCE, AUTOMATICALLY CONTROLLED

Appliances equipped with an automatic burner ignition and safety shut-off device and other automatic devices which accomplish complete turn-on and shut-off of the gas to the main burner or burners, and graduate the gas supply to the burner or burners, but do not affect complete shut-off of the gas.

APPLIANCES FOR VENTED FIREPLACE

A self contained, free-standing, fuel-gas burning appliance designed for installation only in a vented fireplace and whose primary function lies in the esthetic effect of the flame.

APPLIANCES FOR VENTED FIREPLACE Coal basket

An open-flame type appliance consisting of a metal basket filled with simulated coals which gives the appearance of a coal fire when in operation.

APPLIANCES FOR VENTED FIREPLACE Fireplace insert

Consists of an open-flame radiant-type appliance mounted in a decorative metal panel to cover the fireplace or mantel opening and having provisions for venting into the fireplace chimney.

APPLIANCES FOR VENTED FIREPLACE Gas log

An open flame type appliance consisting of a metal frame or base supporting simulated logs.

APPLIANCES FOR VENTED FIREPLACE Radiant appliance

An open front appliance designed primarily to convert the energy in fuel gas to radiant heat by means of refractory radiant or similar radiating materials.

APPRENTICE

APPROVED

Approved by the gas official or other authority having jurisdiction.

APPROVED

Approved by the code official or other authority having jurisdiction.

AREA DRAIN

A receptacle designed to collect surface or storm water from an open area.

ASPIRATOR

A fitting or device supplied with water or other fluid under positive pressure that passes through an integral orifice or constriction, causing a vacuum. Aspirators are also referred to as suction apparatus, and are similar in operation to an ejector.

AUTOMATIC GAS SHUTOFF DEVICE

A device constructed so that the attainment of a water temperature in a hot water supply system in excess of some predetermined limit acts in such a way as to cause the gas to the system to be shut off. It may be constructed integrally with the shut-off device or be a separate assembly.

AUTOMATIC IGNITION

Means which provide for ignition of the gas at the burner when the gas burner valve controlling the gas to that burner is turned on, and which affect re-ignition if the flames on the burner have been extinguished by means other than closing the gas burner valve.

AUTOMATIC PILOT

See SAFETY SHUTOFF DEVICE.

BACKFLOW Backpressure

Pressure created by any means in the water distribution system, which by being in excess of the pressure in the water supply mains causes a potential backflow condition.

BACKFLOW Backpressure

low head, A pressure less than or equal to 4.33 psi  (29.88 kPa) or the pressure exerted by a 10-foot (3048 rom) column of water.

BACKFLOW Backsiphonage

The backflow of potentially contaminated water into the potable water system as a result of the pressure in the potable water system falling below atmospheric pressure of the plumbing fixtures, pools, tanks or vats connected to the potable water distribution piping.

BACKFLOW CONNECTION

Any arrangement whereby backflow is possible.

BACKFLOW  PREVENTER

A device or means to prevent backflow.

BACKWATER VALVE

A device or valve installed in the building drain or sewer pipe where a sewer is subject to backflow, and which prevents drainage or waste from backing into a low level or fixtures and causing a flooding condition.

BAFFLE

An object placed in an appliance to change the direction of or retard the flow of air, air-gas mixtures, or flue gases.

BALL COCK

A water supply valve, opened or closed by means of a float or similar device, utilized to supply water to a tank. An anti siphon ball cock contains an anti siphon device in the form of an approved air gap or vacuum breaker that is an integral part of the ball cock unit and that is positioned on the discharge side of the water supply control valve.

BASE FLOOD ELEVATION

A reference point, determined in accordance with the building code, based on the depth or peak elevation of flooding, including wave height, which has a I-percent (1OO-year flood) or greater chance of occurring in any given year.

BATHROOM

A room containing a bathtub or shower for use by a person to bathe or cleanse one's self, located in or adjacent to a residence, apartment, hotel, motel, or similar type building.

BATHROOM GROUP

A group of fixtures, including or excluding a bidet, and consisting of a water closet, lavatory, and bathtub or shower. Such fixtures are located together on the same floor level.

BEDPAN STEAMER OR BOILER

A fixture utilized for scalding bedpans or urinals by direct application of steam or boiling water.

BEDPAN WASHER AND STERILIZER

A fixture designed to wash bedpans and to flush the contents into the sanitary drainage system. Included are fixtures of this type that provide for disinfecting utensils by scalding with steam or hot water.

BEDPAN WASHER HOSE

A device supplied with hot and cold water and located adjacent to a water closet or clinical sink to be utilized for cleansing bedpans.

BOILER

A self-containing gas burning appliance for supplying hot water or low pressure steam, primarily intended for domestic and commercial space heating application.

BRANCH

Any part of the piping system except a riser, main or stack.

BRANCH INTERVAL

A distance along a soil or waste stack corresponding in general to a story height, but not less than 8 feet (2438 mm), within which the horizontal branches from one floor or story of a structure are connected to the stack.

BRANCH LINE

Gas piping which conveys gas from a supply line to the appliance.

BRANCH VENT

A vent connecting one or more individual vents with a vent stack or stack vent.

BRAZING

A metal joining process wherein coalescence is produced by the use of a nonferrous filler metal having a melting point above 1,000¦ F (538 C) but lower than that of the base metal being joined. The filler material is distributed between the closely fitted surfaces of the joint by capillary attraction.

BRITISH THERMAL UNIT

British thermal unit which is the quantity of heat required to raise the temperature of one pound (454 g) of water 1 degree (0.55 C) Fahrenheit (1 BTU = 1055 J).

BROILER UNIT

A separate appliance, a general term including broilers, salamanders, barbecues, and other devices cooking primarily by radiated heat, excepting toasters.

BUILDING

Any structure occupied or intended for supporting or sheltering any occupancy.

BUILDING DRAIN

That part of the lowest piping of a drainage system that receives the discharge from soil, waste and other drainage pipes inside and that extends 30 inches (762 mm) beyond the walls of the building and conveys the drainage to the building sewer.

BUILDING DRAIN Combined

A building drain that conveys both sewage and storm water or other drainage.

BUILDING DRAIN Sanitary

A building drain that conveys sewage only.

BUILDING DRAIN Storm

A building drain that conveys storm water or other drainage, but not sewage.

BUILDING PIPING GAS

The gas piping from the point where it enters the building or foundation to and including the outlets. This is applicable where the gas meter is located some distance from the building or LP gas is delivered without a meter. The gas piping from the gas meter to and including the outlets. This is applicable where the gas meter is located in or immediately adjacent to the building.

BUILDING SEWER

That part of the drainage system that extends from the end of the building drain and conveys the discharge to a public sewer, private sewer, individual sewage disposal system or other point of disposal.

BUILDING SUBDRAIN

That portion of a drainage system that does not drain by gravity into the building sewer.

BUILDING TRAP

A device, fitting or assembly of fittings installed in the building drain to prevent circulation of air between the drainage system of the building and the building sewer.

BURNER

A device for the final conveyance of the gas, or a mixture of gas and air, to the combustion zone.

BURNER Atmospheric injection type

A burner in which the air at atmospheric pressure is injected into the burner by a jet of gas.

BURNER Injection (Bunsen) type

A burner employing the energy of a jet of gas to inject air for combustion into the burner and mix it with the gas.

BURNER Luminous or yellow flame

A burner in which secondary air only is depended on for the combustion of the gas.

BURNER Power

A burner in which either gas or air or both are supplied at pressures exceeding, for gas, the line pressure, and for air, atmospheric pressure, this added pressure being applied at the burner.

BURNER Pre-mixing

A power burner in which all or nearly all of the air for combustion is mixed with the gas as primary air.

BURNER Pressure

A burner which is supplied with an air-gas mixture under pressure (usually from 0.5 to 14 inches of water [124 to 3483 Pa] and occasionally higher).

CENTRAL FURNACE

A self-contained, gas burning appliance for heating air by transfer of heat of combustion through metal to the air, and designed to supply heated air through ducts to spaces remote from or adjacent to the appliance location.

CENTRAL FURNACE Down flow forced air type

A furnace designed with air flow essentially in a vertical path, discharging air at or near the bottom of the furnace.

CENTRAL FURNACE Forced air type

A central furnace equipped with a fan or blower which provides the primary means for circulation of air.

CENTRAL FURNACE Gravity type

A central furnace depending primarily on circulation of air by gravity.

CENTRAL FURNACE Gravity type with integral fan

A central furnace equipped with a fan or blower as an integral part of its construction and operable on gravity systems only. The fan or blower is to be used only to overcome the internal furnace resistance to air flow.

CENTRAL FURNACE Horizontal forced air type

A furnace designed for low headroom installation with air flow through the appliance essentially in a horizontal path.

CENTRAL FURNACE Up flow forced air type,

A furnace designed with air flow essentially in a vertical path, discharging air at or near the top of the furnace.

CENTRAL HEATING GAS APPLIANCE

A vented gas-fired appliance comprising the following classes as defined herein: boiler, central furnace, floor furnace, or vented wall furnace.

CHIMNEYS Factory-built chimneys

Chimneys that are factory made, listed by a nationally recognized testing agency, for venting gas appliances, gas incinerators, and solid or liquid fuel burning appliances.

CHIMNEYS Masonry

Field constructed chimneys built in accordance with nationally recognized codes or standards.

CHIMNEYS Metal

Chimneys made of metal ofO.135-inch (3.43 mm) minimum, galvanized or painted, unless suitably corrosion resistant, properly welded or riveted and built in accordance with nationally recognized codes or standards.

CIRCUIT VENT

A vent that connects to a horizontal drainage branch and vents two traps to a maximum of eight traps or trapped fixtures connected into a battery.

CISTERN

A small covered tank for storing water for a home or farm. Generally, this tank stores rainwater to be utilized for purposes other than in the potable water supply, and such tank is placed underground in most cases.

CLEANOUT

An access opening in the drainage system utilized for the removal of obstructions. Types of cleanouts include a removable plug or cap, or a removable fixture or fixture trap.

CLOSED WATER PIPING SYSTEM

A system of water piping where a check valve or other device prevents the free return of water or steam to the water main.

CLOTHES DRYER

A device used to dry wet laundry by means of heat derived from the combustion of fuel gases.

CLOTHES DRYER Type 1

Factory-built package, multiple produced. Primarily used in family living environment. Mayor may not be coin-operated for public use. Usually the smallest unit physically and in function output.

CLOTHES DRYER Type 2

Factory-built package, multiple produced. Used in business with direct intercourse of the function with the public. Mayor may not be operated by the public or hired attendant. Mayor may not be coin operated. Not designed for use in individual family living environment. May be small, medium or large in relative size.

CODE

Regulations, subsequent amendments thereto, or any emergency rule or regulation that the administrative authority having jurisdiction has lawfully adopted.

CODE OFFICIAL

The officer or other designated authority charged with the administration and enforcement of this code, or a duly authorized representative.

COMBINATION FIXTURE

A fixture combining one sink and laundry tray or a two- or three-compartment sink or laundry tray in one unit.

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 waste and vent pipe adequately sized to provide free movement of air above the flow line of the drain.

COMBINED BUILDING DRAIN

See "Building drain, combined."

COMBINED BUILDING SEWER

See "Building sewer, combined."

COMBUSTIBLE CONSTRUCTION

A wall or surface constructed of wood, composition, or of wooden studding and lath and plaster.

COMBUSTION

The rapid oxidation of fuel gases accompanied by the production of heat, or heat and light.

COMBUSTION CHAMBER

The portion of an appliance within which combustion occurs.

COMBUSTION PRODUCTS

Constituents resulting from the combustion of a fuel with the oxygen of the air, including the inerts but excluding excess air.

COMMON VENT

A vent connecting at the junction of two fixture drains or to a fixture branch and serving as a vent for both fixtures.

CONCEALED FOULING SURFACE

Any surface of a plumbing fixture which is not readily visible and is not scoured or cleansed with each fixture operation.

CONCEALED GAS PIPING

Piping which, when in place in the finished building, would require removal of permanent construction to gain access to the piping.

CONDENSATE