A system of pipes supplying a flow of air to or from a drainage system or providing a circulation of air within the system to protect trap seals from siphonage and back pressure

Any pipe or channel by which a liquid is drawn off

A pipe connecting a drain near one or more traps to a vent stack or stack vent

A pit or reservoir serving as a drain or receptacle for water or other liquids

A length of soil or waste stack corresponding to a story height but never less than 8 ft. or 2.4 m, within which the horizontal branch drains from one floor are connected

A pipe or other artificial conduit, usually underground, for carrying off sewage and other liquid waste to a treatment plant or other point of disposal

A drain extending from the trap of a plumbing fixture to a junction with a waste or soil stack

A drain connecting one or more fixtures to a soil or waste stack

A vertical waste pipe or vent pipe serving a number of floors

A pipe fitting with a removable plug giving access to a soil or waste pipe for inspection or cleaning

A pump for removing the accumulations of liquid from a sump

The lowest point on the interior of a drain pipe or sewer where the liquid is deepest

A vertical soil pipe

A vertical waste pipe

A vertical vent installed primarily to provide circulation of air to or from any part of a drainage system

Any pipe carrying the discharge from water closets or urinals to the building drain or building sewer

Any pipe carrying the discharge from plumbing fixtures other than water closets or urinals

A waste pipe that is not connected directly with a drainage system, but discharges into it through a properly trapped plumbing fixture

The downward slope of a pipe, conduit, or channel, expressed either as a percentage or in inches per foot

The lowest part of a drainage system that receives the discharge from soil and waste stacks inside the walls of a building and conveys it by gravity to the building sewer

A group of two or more similar plumbing fixtures discharging into a common waste or soil branch

A trap installed in the building drain to prevent the passage of sewer gases from the building sewer to the drainage system of a building

An oversized pipe functioning both as a soil or waste pipe and a vent

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

Also called soil vent, waste vent

A vent that provides circulation of air between a drainage and a venting system by connecting a vent stack to a horizontal drain between the first fixture and the soil or waste stack

A circuit vent that loops back and connects with a stack vent instead of a vent stack

A single vent serving two fixture drains connected at the same level

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

A vent connecting a fixture drain to a main or branch vent

A vent serving two or more traps and extending from in front of the last fixture connection of a horizontal branch to the vent stack

A vent installed on the sewer side of a trap

A vertical vent formed by a continuation of the drain line to which it connects

A vent pipe admitting fresh air into the drainage system of a building, connected to the building drain at or before the building trap

A pipe or other artificial conduit, usually underground, for carrying off sewage and other liquid waste to a treatment plant or other point of disposal

A sewer conveying only the sewage from plumbing fixtures and excluding storm water

The liquid waste containing animal or vegetable matter in suspension or solution that passes through a sewer