1.2 Definition of terms

Question 1

the unobstructed vertical distance through the free atmosphere between the lowest opening for any pipe or faucet supplying water to a tank or plumbing fixture and the floor level rim of the receptacle

Answer 1

Air Gap

Question 2

is a drain, installed to collect surface or rain water from an open area.

Answer 2

Area Drain

Question 3

the flow of water or other liquids into the distributing pipes of a potable supply of water from any source or sources other than its intended source.

Answer 3

Back-flow

Question 4

Give two types of backflow

Answer 4

Back-siphonage and cross-connection

Question 5

is any arrangement whereby back-flow can occur.

Answer 5

back-flow connection

Question 6

is any group of two (2) or more similar adjacent fixtures which discharge into a common horizontal waste or soil branch.

Answer 6

Battery of fixtures

Question 7

any part of a plumbing system other than the main.

Answer 7

branch

Question 8

is a vent connecting one or more individual vents with a vent stack or stack-vent.

Answer 8

branch-vent

Question 9

is the sewer extending from the main sewer to the curb line.

Answer 9

Building Connection

Question 10

shall mean that part of the lowest horizontal piping of a drainage system which receives, or is designated to receive, the discharge of all soil, waste or other drainage pipes inside the walls of the building and to a distance of five (5) feet outside of the foundations or any footings of a building and convey the same to the building sewer.

Answer 10

Building drain

Question 11

shall mean the extension from the building drain to
the public sewer or other place of disposal.

Answer 11

Building(house) sewer

Question 12

is a building drain used for conveying rain water,
ground water, subsurface water, cooling water, or other similar discharge to a building storm sewer.

Answer 12

Building storm drain

Question 13

is the pipe extending from the building storm drain to
the public sewer or other point of disposal.

Answer 13

Building storm sewer

Question 14

is that portion of a drainage system which cannot drain by gravity into the building sewer.

Answer 14

Building subdrain

Question 15

is a running trap installed in the building drain to prevent circulation of air between the drainage system of the building and the building sewer.

Answer 15

building trap

Question 16

is a branch that serves two (2) or more traps and extends from in front of the last fixture connection of a horizontal branch to the vent stack.

Answer 16

Circuit vent

Question 17

waste that is free of organic matter.

Answer 17

clear water waste

Question 18

is a fixture which is an integral part combination of one sink and one or two (2) laundry trays in one fixture, or of a two-or three- compartment sink or laundry tray in one fixture.

Answer 18

combination fixture

Question 19

shall mean a sewer receiving both surface runoff and sewage.

Answer 19

Combined sewer

Question 20

is a vent that is a straight line continuation of the drain to
which it is connected, and is designated according to the angle of the drain with the horizontal at the point at which the vent connects as vertical continuous-waste-and-vent, forty-five (45) degree continuous-waste-and- vent.

Answer 20

Common vent

Question 21

is any physical connection or arrangement of pipes between two (2) otherwise separate water-supply systems, one of which contains potable water and the other water of unknown or questionable
safety, whereby water may flow from one system to the other, the system of flow depending on the pressure differential between the two (2) systems.

Answer 21

cross-connection

Question 22

is a branch leading from a soil, waste, vent, or building sewer
which is terminated at a developed distance of two feet or more by means of a cap, plug, or other closed fitting.

Answer 22

dead end

Question 23

is two (2) offsets installed in succession or in series in the same
line.

Answer 23

double offset

Question 24

is any pipe which carries waste water or waterborne
wastes in a building drainage system.

Answer 24

drain pipe

Question 25

is all the piping within public or private premises which conveys sewage, rain water, or other liquid wastes to a point of disposal, and shall include the building drain and building sewer system, or a private or public sewage-treatment or disposal plant.

Answer 25

drainage system

Question 26

is any vent that does not carry water or waterborne wastes.

Answer 26

dry vent

Question 27

is a vent connected at the junction of two (2) fixture drains and serving as a vent for both fixtures.

Answer 27

duel vent

Question 28

is a term used to describe soil or waste system where all piping is of threaded pipe, tubing, or other rigid construction, using recess drainage fittings to correspond to the types of piping.

Answer 28

Durham system

Question 29

is the minimum crossing area at the point of water-supply discharge, measured or expressed either in terms of the diameter of a circle, or if the opening is not circular, the diameter of a circle of equivalent cross- sectional area.

Answer 29

Effective opening

Question 30

is a plumbing system, or any part thereof which has been installed prior to the effective date of this code.

Answer 30

Existing work

Question 31

is the water supply pipe and the water distribution pipe.

Answer 31

Fixture branch

Question 32

is the drain from the trap of a fixture to the junction of that drain with any other drain pipe.

Answer 32

Fixture drain

Question 33

is a water-supply pipe connecting the fixture with the fixture branch.

Answer 33

fixture-supply pipe

Question 34

is a design factor so chosen that the load-producing values of the different plumbing fixtures can be expressed approximately as multiples of that factor.

Answer 34

Fixture unit

Question 35

in reference to a plumbing fixture is the level at which water begins to overflow the top or rim of the fixture.

Answer 35

flood level

Question 36

is the top edge of the receptacle from which water overflows.

Answer 36

flood-level rim

Question 37

is a device which discharges a predetermined quantity of water to fixtures for flushing purposes and is actuated by direct water pressure.

Answer 37

flush valve

Question 38

is its slope in reference to a horizontal plane. For drainage piping it is usually expressed as the fall in inches or fraction of an inch per foot of length of pipe.

Answer 38

Grade of a line pipe

Question 39

is a receptacle designed to intercept and retain grease or fatty substance contained in kitchen or other wastes.

Answer 39

Grease interceptor

Question 40

is a branch 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 to the soil or waste stack or to the building drain. Horizontal pipe is any pipe or fitting

Question 41

is a branch 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 to the soil or waste stack or to the building drain.

Answer 41

Horizonta branch

Question 42

is a waste pipe which does not connect directly with the drainage system, but discharges into it through a properly trapped fixture or receptacle.

Answer 42

indirect waste pipe

Question 43

is a pipe installed to vent a fixture trap and connected to the general vent system at a point above the fixture.

Answer 43

individual vent

Question 44

shall mean the waterborne solids, liquids and/or gaseous wastes from industrial, manufacturing, commercial or food-processing operation or process, or from the development of any natural resource, or any mixture of these with water or domestic sewage.

Answer 44

Industrial waste

Question 45

means contrary to sanitary principles, injurious to health.

Answer 45

insanitary

Question 46

is the receptacle designed to separate or intercept and prevent the passage of oil, volatile flammable liquid, grease, sand, or other material into the drainage system to which such receptacle is directly or indirectly connected.

Answer 46

Interceptor

Question 47

the chief plumbing inspector or his duly authorized assistant plumbing inspectors. All powers conferred by this chapter of this code upon the chief plumbing inspector are likewise conferred upon his assistant plumbing inspectors and such assistants may exercise all such powers.

Answer 47

Inspector

Question 48

is the water conductor from the roof to the building storm drain or other piping serving as a storm drain.

Answer 48

Leader (downspout)

Question 49

is a relief or individual vent which is run at approximately the same elevation as the waste line it serves until it can rise gradually and connect to a vent, vent stack or stack above the flood level rim of the fixture it serves.

Answer 49

line

Question 50

is the discharge from any fixture in connection with the plumbing system which does not receive fecal matter.

Answer 50

liquid waste

Question 51

is a pipe connecting upward from a soil or waste stack to a vent stack for the purpose of preventing pressure changes in the stacks.

Answer 51

yoke vent

Question 52

a waste pipe that serves also as a vent.

Answer 52

wet vent

Question 53

is the pipe from the water main or other source of water supply to the building or service required.

Answer 53

water service pipe

Question 54

as used in connection with the water-distributing system is the water discharge opening to either a fixture or atmospheric pressure (except into an open tank which is part of the water-supply system); or to a boiler or heating system; or to any water-operated device or equipment requiring water to operate.

Answer 54

water outet

Question 55

is a water-supply pipe for public or community use.

Answer 55

water main

Question 56

is a permanent gas-fired or electric appliance used for heating water, and for the purposes of this code is designated as a plumbing fixture.

Answer 56

water heater

Question 57

in a building is one which conveys water from the water service pipe to the plumbing fixtures or other water outlets.

Answer 57

water distributing pipe

Question 58

is any pipe which receives the discharge of any fixture except water closets or similar fixtures, and conveys it to the building drain, soil, or waste stack.

Answer 58

waste pipe

Question 59

is any pipe or fitting which is installed in a vertical position or which makes an angle of not more than forty-five (45) degrees with the vertical.

Answer 59

vertical pipe

Question 60

is 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 back pressure.

Answer 60

vent system

Question 61

is a vertical vent pipe installed primarily for the purpose of providing circulation of air to or from any part of the drainage system.

Answer 61

vent stack

Question 62

is material that has been installed and used, and has been removed and passed to another ownership or possession.

Answer 62

used material

Question 63

is the vertical distance between the crown weir and the dip of the trap.

Answer 63

trap seal

Question 64

is a fitting or device so designed and constructed as to provide a liquid seal which will prevent the back passage of air without materially affecting the flow of sewage or wastewater through it.

Answer 64

trap

Question 65

are devices for supporting and securing pipe and fixtures to walls, ceilings, floors or structural members.

Answer 65

Supports, hangers, and anchors

Question 66

is a tank or pit which receives the discharge from drains or other wastes, and from which the discharge is pumped or ejected or otherwise mechanically propelled into a drainage system.

Answer 66

sump

Question 67

is a drain installed for collecting subsurface or seeping water and conveying it to a place of disposal.

Answer 67

subsoil drain

Question 68

shall mean a sewer which carries storm and surface waters and drainage, but excludes sewage and polluted industrial wastes.

Answer 68

storm drain

Question 69

is the extension of a soil or waste stack above the highest horizontal branch connected to the stack.

Answer 69

stack-vent

Question 70

is a general term for the vertical main of a system of soil, waste, or vent piping.

Answer 70

stack

Question 71

is any pipe which conveys the discharge of water closets or fixtures having similar functions with or without the discharge from other fixtures.

Answer 71

soil pipe