Chapter 2 Definitions

Question 1

Same as a studor vent, Allows air to enter the drainage system only when a negative pressure exists.

Answer 1

Air Admittance Valve

Question 2

An indirect waste line that discharges below the flood level rim of the drain.

Answer 2

Air Break

Question 3

The unobstructed vertical distance through the free atmosphere between the outlet of the waste pipe and the flood level rim of the drain.

Answer 3

Air Gap ( drainage)

Question 4

The unobstructed vertical distance through the free atmosphere between a pipe or faucet supplying water and the flood level rim of the tank or receptacle

Answer 4

Air Gap (water supply)

Question 5

Acceptable to the code official or other authority having jurisdiction

Answer 5

Approved

Question 6

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

Answer 6

Bathroom Group

Question 7

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

Answer 7

Branch

Question 8

A vertical measurement of distance, 8 feet or more between the connections of horizontal branches to a drainage stack.

Answer 8

Branch Interval

Question 9

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

Answer 9

Branch Vent

Question 10

The lowest part of the drainage system in a building that extends 30” beyond the exterior of the building.

Answer 10

Building Drain

Question 11

That part of the drainage system that extends from the building drain to the public sewer or private disposal system.

Answer 11

Building Sewer

Question 12

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

Answer 12

Circuit Vent

Question 13

A specially designed system of waste piping embodying the horizontal wet venting of one or more sinks, lavatories,drinking fountains or floor drains by means of a common waste and vent pipe adequately sized to provide the free movement of air above the waste flow line of the drain

Answer 13

Combination Waste & Vent System

Question 14

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

Answer 14

Common Vent

Question 15

A pipe inside a building that conveys storm water from the roof to a storm or combined building drain

Answer 15

Conductor

Question 16

A branch leading from a soil, waste or vent pipe and terminating at a develop length of 2 feet by means of a cap or plug.

Answer 16

Dead End

Question 17

The length of a pipeline measured along the centerline of the pipe and fittings.

Answer 17

Developed Length

Question 18

A measure of the probable discharge into the drainage system by various types of plumbing fixtures.

Answer 18

DFU or Drainage Fixture Unit

Question 19

A floor drain that does not receive the discharge of any drain or indirect waste pipe, and protects against damage from accidental spills,fixture overflows and leakage.

Answer 19

Emergency Floor Drain

Question 20

A drain serving two or more fixtures that discharge to another drain or to a stack.

Answer 20

Fixture Branch

Question 21

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

Answer 21

Fixture Drain

Question 22

Water discharged from lavatories ,bathtubs, showers,clothes washers and laundry trays.

Answer 22

Gray Water

Question 23

Plumbing appurtenances that are installed in a sanitary drainage system to intercept free floating fats, oils and grease from waste water discharge.

Answer 23

Grease Interceptor

Question 24

A drainage branch pipe extending laterally from a soil or waste stack or building drain that receives the discharge from two or more fixture drains or branches.

Answer 24

Horizontal Branch Drain

Question 25

Any pipe or fitting that makes an angle of less than 45 degrees with the horizontal.

Answer 25

Horizontal Pipe

Question 26

A waste pipe that doesn't connect directly with the drainage system but discharges through an air gap or air break.

Answer 26

Indirect Waste Pipe

Question 27

A pipe installed to vent a fixture trap and that connects with the vent system above the fixture served.

Answer 27

Individual Vent

Question 28

An exterior drainage pipe for conveying rain water from the roof to an approved means of disposal.

Answer 28

Leader

Question 29

Water-connected or drainage-connected devices intended to perform a special function such as a water heater.

Answer 29

Plumbing Appliance

Question 30

A manufactured device, prefabricated assembly or an on-the-job built component that is an adjunct to the basic piping system and plumbing fixtures such as strainers or filters.

Answer 30

Plumbing Appurtenance

Question 31

A receptacle or device that is connected to a water supply or discharges to a drainage system or both.

Answer 31

Plumbing Fixture

Question 32

That which enables a fixture, appliance or equipment to be directly reached without requiring the removal or movement of any panel , door or similar obstruction and without the use of a ladder.

Answer 32

Ready Access

Question 33

A vent whose primary funcation is to provide circulation of air between drainage and vent systems,

Answer 33

Relief vent

Question 34

Any liquid waste containing animal or vegetable matter in suspension or solution , including liquids containing chemicals in solution.

Answer 34

Sewage

Question 35

The fall of a line of pipe in reference to a horizontal plane.

Answer 35

Slope

Question 36

A pipe that conveys sewage containing fecel matter to the building drain or building sewer

Answer 36

Soil pipe

Question 37

A general term for any veritcal line of soil, waste, vent or conducter piping that extends through at least one story with or without offsets.

Answer 37

Stack

Question 38

The extension of a soil or waste stack above the highest horizontal drain connected to the stack

Answer 38

Stack vent

Question 39

The method of wet venting where a uniformly oversized vertical drain serves as the vent for one or more independently connected waste fixtures.

Answer 39

Stack venting

Question 40

A tank or pit that receives sewage or liquid waste, located below the normal grade of the gravity system and that must be emptied by mechanical meams.

Answer 40

Sump

Question 41

Water having a temperature range between 85º F (29º C) and 110º F (43º C)

Answer 41

Tempered water

Question 42

A fitting or device that provides a liquid seal to prevent the emission of sewer gases without materially affecting the flow of sewage or waste water through the trap.

Answer 42

Trap

Question 43

The vertical distance between the weir and the top of the dip of the trap.

Answer 43

Trap seal

Question 44

A vertical vent pipe installed primarily for the purpose of circulation of air to and from any part of the drainage system.

Answer 44

Vent stack

Question 45

Any pipe or fitting that makes an angle of 45 degrees or more with the horizontal.

Answer 45

Vertical pipe

Question 46

The discharge from any fixture, appliance,area appurtenance that doesn't contain fecal matter.

Answer 46

Waste

Question 47

A pipe that doesn't convey fecal matter .

Answer 47

Waste pipe

Question 48

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 48

Yoke vent