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to prevent circulation of air between the drainage system of
<br />the building and the building sewer.
<br />CIRCUIT VENT. A circuit vent is a branch vent that serves
<br />two or more traps and extends from in front of the last fix-
<br />ture connection of a horizontal brunch to the vent stack.
<br />CODE. The word "Code" when used alone shall mean these
<br />regulations, subsequent amendments thereto, or any emer-
<br />gency rule or regulation which the Plumbing Board having
<br />jurisdiction may lawfully adopt.
<br />COMBINATION FIXTURE. A combination fixture is a
<br />fixture combining one sink and tray or a two -or -three com-
<br />partment sink or tray in one unit.
<br />COMBINED BUILDING SEWER. A combined building
<br />sewer receives storm water and sewage.
<br />COMBINATION WASTE AND VENT SYSTEM. A combi-
<br />nation waste and vent system is a specially designed system
<br />of waste piping embodying the horizontal wet venting of one
<br />or more sinks or floor drains by means of a common waste
<br />and vent pipe adequately sized to provide free movement of
<br />• air above the flow line of the drain.
<br />COMMON VENT. A common vent is a vent connecting at
<br />the junction of the fixture drains and serving as a vent for
<br />both fixtures.
<br />CONDUCTOR. See LEADER.
<br />CONTINUOUS VENT. A continuous vent is a vertical vent
<br />that is a continuation of the drain to which it connects.
<br />CONTINUOUS WASTE. A continuous waste is a drain
<br />from two or three fixtures connected to a single trap.
<br />CONTRACTING FIRM. A contracting firm is any individ-
<br />ual, partnership or corporation engaged in the business of
<br />contracting for the performance of plumbing work.
<br />CONTRACTOR. See CONTRACTING FIRM.
<br />CROSS CONNECTION. A cross connection is any physical
<br />connection or arrangement between the otherwise separate
<br />Piping systems, one of which contains potable water and the
<br />other water of unknown or questionable safety whereby water
<br />may flow from one system to the other, the direction of the
<br />but in no case less than 8 feet within the horizontal branches
<br />from one floor or story of a building are connected to the
<br />stack.
<br />BRANCH VENT. A branch vent is a vent connecting one
<br />or more individual vents with a vent stack or stack vent.
<br />BUILDING. A building is a structure built, erected, and
<br />framed of component structural parts designed for the hous-
<br />ing, shelter, enclosure or support of persons, animals, or prop-
<br />erty of any kind.
<br />BUILDING CLASSIFICATION. Building classification is
<br />the arrangement adopted by the Building Official for the des-
<br />ignation of buildings in classes based upon their use or occu-
<br />pancy.
<br />BUILDING DRAIN. The building (house) drain is that
<br />part of the lowest piping of a drainage system which re-
<br />ceives the discharge from soil, waste, and other drainage pipes
<br />inside the walls of the building and conveys it to the building
<br />(house) sewer beginning three (3) feet outside the building
<br />wall.
<br />BUILDING SEWER. The building (house) sewer is that
<br />part of the horizontal piping of a drainage system which ex-
<br />tends from the end of the building drain and which receives
<br />the discharge of the building drain and conveys it to a public
<br />sewer, private sewer, individual sewage disposal system, or
<br />other point of disposal.
<br />BUILDING STORM DRAIN. A building (house) storm
<br />drain is a building drain used for conveying rain water, sur-
<br />face water, ground water, subsurface water, condensate, cool-
<br />ing water, or other similar discharge to a building storm sewer
<br />or a combined building sewer, beginning three (3) feet out-
<br />side the building wall.
<br />BUILDING STORM SEWER. A building (house) storm
<br />sewer is the extension from the building storm drain to the
<br />public storm sewer, combined sewer, or other point of dis-
<br />posal.
<br />BUILDING SUBDRAIN. A building (house) subdrain is
<br />that portion of a drainage system which cannot drain by grav-
<br />ity into the building sewer.
<br />BUILDING TRAP. A building (house) trap is a device,
<br />fitting, or assembly of fittings installed in the building drain
<br />FIXTURE BRANCH. A fixture branch is a pipe connect-
<br />ing several fixtures.
<br />FIXTURE DRAIN. A fixture drain is the drain from the
<br />trap of a fixture to the junction of that drain with any other
<br />drain pipe.
<br />FIXTURE SUPPLY. A fixture supply is a water -supply
<br />pipe connecting the fixture with the fixture branch.
<br />FIXTURE UNIT. A fixture unit is a quantity in terms of
<br />which the load producing effects on the plumbing system of
<br />different kinds of plumbing fixtures are expressed on some
<br />arbitrarily chosen scale.
<br />FIXTURE UNIT FLOW RATE. Fixture unit flow rate
<br />is the total discharge flow in gpm of a single fixture divided
<br />by 7.5 which provides the flow rate of that particular plumb-
<br />ing fixture as a unit of flow. Fixtures are rated in multiples of
<br />this unit of flow.
<br />FLOOD LEVEL. See FLOODED.
<br />FLOOD LEVEL RIM. The flood level rim is the top edge
<br />of the receptacle from which water overflows.
<br />FLOODED. A fixture is flooded when the liquid therein rises
<br />to the flood level rim.
<br />FLUSH VALVES. A flush valve is a device located at the
<br />bottom of the tank for the purpose of flushing water closets
<br />and similar fixtures.
<br />FLUSHOMETER VALVE. A flushometer valve is a device
<br />which discharges a predetermined quantity of water to fix-
<br />tures for flushing purposes and .is actuated by direct water
<br />pressure. •
<br />FROSTPROOF CLOSET. A frostproof closet is a hopper
<br />that has no water in the bowl and has the trap and the control
<br />valve for its water supply installed below the frost line.
<br />GRADE. Grade is the slope or fall of a line of pipe in refer-
<br />ence to a horizontal plane. In drainage it is usually expressed
<br />as the fall in a fraction of an inch per foot length of pipe.
<br />GREASE INTERCEPTOR. See INTERCEPTOR.
<br />GREASE TRAP. See INTERCEPTOR.
<br />09
<br />(b) Definition of Terms—
<br />AIR GAP. An air gap in a water supply system is the un-
<br />obstructed vertical distance through the free atmosphere be-
<br />tween the lowest opening from any pipe or faucet supplying
<br />water to a tank, plumbing fixture, or other device and the
<br />flood -level rim of the receptable.
<br />ANCHORS. See SUPPORTS.
<br />APPROVED. Approved means accepted or acceptable un-
<br />der an applicable specification stated or cited in this Code, or
<br />accepted as suitable for the proposed use under procedures and
<br />powers by the Plumbing Board.
<br />AREA DRAIN. An area drain is a receptacle designed to
<br />collect surface or rain water from an open area.
<br />BACKFLOW. Backflow is the flow of water or other liquids,
<br />mixtures, or substances into the distributing pipes of a potable
<br />supply of water from any source or sourceg'other than its in-
<br />tended source. (See BACK -SIPHONAGE.)
<br />BACKFLOW CONNECTION. Backflow connection or con-
<br />dition is any arrangement whereby backflow can occur.
<br />BACKFLOW PREVENTER. A backflow preventer is a de-
<br />vice or means to prevent backflow into the potable water sys-
<br />tem.
<br />BACK -SIPHONAGE. Rack-sinhona-e is the flowin(- back of
<br />used, contaminated, or polluted water from a plumbing fixture
<br />or vessel into a water supply pipe due to a negative pressure in
<br />such pipe. See BACKFLOW.
<br />BATTERY OF FIXTURES. A "battery of fixtures" is any
<br />group of two or more similar adjacent fixtures which dis-
<br />charge intd a common horizontal waste or soil branch.
<br />BOILER BLOW -OFF. A boiler blow -off is an outlet on a
<br />boiler to permit emptying or discharge of sediment.
<br />�--�
<br />BRANCH. A branch is any part of the piping system other
<br />than a main, riser or stack. 0
<br />BRANCH HORIZONTAL. See HORIZONTAL BRANC14
<br />BRANCH FIXTURE. See FIXTURE BRANCH.
<br />BRANCH INTERVAL. A branch interval is a length of
<br />soil or waste stack corresponding in general to a story height,
<br />to prevent circulation of air between the drainage system of
<br />the building and the building sewer.
<br />CIRCUIT VENT. A circuit vent is a branch vent that serves
<br />two or more traps and extends from in front of the last fix-
<br />ture connection of a horizontal brunch to the vent stack.
<br />CODE. The word "Code" when used alone shall mean these
<br />regulations, subsequent amendments thereto, or any emer-
<br />gency rule or regulation which the Plumbing Board having
<br />jurisdiction may lawfully adopt.
<br />COMBINATION FIXTURE. A combination fixture is a
<br />fixture combining one sink and tray or a two -or -three com-
<br />partment sink or tray in one unit.
<br />COMBINED BUILDING SEWER. A combined building
<br />sewer receives storm water and sewage.
<br />COMBINATION WASTE AND VENT SYSTEM. A combi-
<br />nation waste and vent system is a specially designed system
<br />of waste piping embodying the horizontal wet venting of one
<br />or more sinks or floor drains by means of a common waste
<br />and vent pipe adequately sized to provide free movement of
<br />• air above the flow line of the drain.
<br />COMMON VENT. A common vent is a vent connecting at
<br />the junction of the fixture drains and serving as a vent for
<br />both fixtures.
<br />CONDUCTOR. See LEADER.
<br />CONTINUOUS VENT. A continuous vent is a vertical vent
<br />that is a continuation of the drain to which it connects.
<br />CONTINUOUS WASTE. A continuous waste is a drain
<br />from two or three fixtures connected to a single trap.
<br />CONTRACTING FIRM. A contracting firm is any individ-
<br />ual, partnership or corporation engaged in the business of
<br />contracting for the performance of plumbing work.
<br />CONTRACTOR. See CONTRACTING FIRM.
<br />CROSS CONNECTION. A cross connection is any physical
<br />connection or arrangement between the otherwise separate
<br />Piping systems, one of which contains potable water and the
<br />other water of unknown or questionable safety whereby water
<br />may flow from one system to the other, the direction of the
<br />but in no case less than 8 feet within the horizontal branches
<br />from one floor or story of a building are connected to the
<br />stack.
<br />BRANCH VENT. A branch vent is a vent connecting one
<br />or more individual vents with a vent stack or stack vent.
<br />BUILDING. A building is a structure built, erected, and
<br />framed of component structural parts designed for the hous-
<br />ing, shelter, enclosure or support of persons, animals, or prop-
<br />erty of any kind.
<br />BUILDING CLASSIFICATION. Building classification is
<br />the arrangement adopted by the Building Official for the des-
<br />ignation of buildings in classes based upon their use or occu-
<br />pancy.
<br />BUILDING DRAIN. The building (house) drain is that
<br />part of the lowest piping of a drainage system which re-
<br />ceives the discharge from soil, waste, and other drainage pipes
<br />inside the walls of the building and conveys it to the building
<br />(house) sewer beginning three (3) feet outside the building
<br />wall.
<br />BUILDING SEWER. The building (house) sewer is that
<br />part of the horizontal piping of a drainage system which ex-
<br />tends from the end of the building drain and which receives
<br />the discharge of the building drain and conveys it to a public
<br />sewer, private sewer, individual sewage disposal system, or
<br />other point of disposal.
<br />BUILDING STORM DRAIN. A building (house) storm
<br />drain is a building drain used for conveying rain water, sur-
<br />face water, ground water, subsurface water, condensate, cool-
<br />ing water, or other similar discharge to a building storm sewer
<br />or a combined building sewer, beginning three (3) feet out-
<br />side the building wall.
<br />BUILDING STORM SEWER. A building (house) storm
<br />sewer is the extension from the building storm drain to the
<br />public storm sewer, combined sewer, or other point of dis-
<br />posal.
<br />BUILDING SUBDRAIN. A building (house) subdrain is
<br />that portion of a drainage system which cannot drain by grav-
<br />ity into the building sewer.
<br />BUILDING TRAP. A building (house) trap is a device,
<br />fitting, or assembly of fittings installed in the building drain
<br />FIXTURE BRANCH. A fixture branch is a pipe connect-
<br />ing several fixtures.
<br />FIXTURE DRAIN. A fixture drain is the drain from the
<br />trap of a fixture to the junction of that drain with any other
<br />drain pipe.
<br />FIXTURE SUPPLY. A fixture supply is a water -supply
<br />pipe connecting the fixture with the fixture branch.
<br />FIXTURE UNIT. A fixture unit is a quantity in terms of
<br />which the load producing effects on the plumbing system of
<br />different kinds of plumbing fixtures are expressed on some
<br />arbitrarily chosen scale.
<br />FIXTURE UNIT FLOW RATE. Fixture unit flow rate
<br />is the total discharge flow in gpm of a single fixture divided
<br />by 7.5 which provides the flow rate of that particular plumb-
<br />ing fixture as a unit of flow. Fixtures are rated in multiples of
<br />this unit of flow.
<br />FLOOD LEVEL. See FLOODED.
<br />FLOOD LEVEL RIM. The flood level rim is the top edge
<br />of the receptacle from which water overflows.
<br />FLOODED. A fixture is flooded when the liquid therein rises
<br />to the flood level rim.
<br />FLUSH VALVES. A flush valve is a device located at the
<br />bottom of the tank for the purpose of flushing water closets
<br />and similar fixtures.
<br />FLUSHOMETER VALVE. A flushometer valve is a device
<br />which discharges a predetermined quantity of water to fix-
<br />tures for flushing purposes and .is actuated by direct water
<br />pressure. •
<br />FROSTPROOF CLOSET. A frostproof closet is a hopper
<br />that has no water in the bowl and has the trap and the control
<br />valve for its water supply installed below the frost line.
<br />GRADE. Grade is the slope or fall of a line of pipe in refer-
<br />ence to a horizontal plane. In drainage it is usually expressed
<br />as the fall in a fraction of an inch per foot length of pipe.
<br />GREASE INTERCEPTOR. See INTERCEPTOR.
<br />GREASE TRAP. See INTERCEPTOR.
<br />09
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