As used in this chapter, the following terms
shall have the meanings indicated:
BRANCH
That part of any system of piping which extends horizontally
at a slight grade, with or without lateral or vertical extensions
or vertical arms, from the main to receive fixture outlets not directly
connected to the main.
DEAD END
A branch leading from a soil, waste, vent, house drain or
house sewer, which is terminated at a developed distance of two feet
or more by means of a cap, plug or other fitting not used for admitting
water to the pipe.
HOUSE DRAIN
That part of the lowest horizontal piping of a house drainage
system which receives the discharge from soil, waste and other drainage
pipes inside the walls of the building and conveys the same to the
house sewer.
HOUSE SEWER
That part of the horizontal piping of a house drainage system
extending from the house drain to its connection with the main sewer
or individual sewage disposal system.
MAIN
That part of any system of horizontal, vertical or continuous
piping which receives the waste, vent or back vents from fixture outlets
or traps, directly or through branch pipes.
PLUMBING
The art of constructing, installing, repairing, replacing
and extending in and adjacent to buildings the pipes, fixtures and
other apparatus for bringing in the water supply and removing liquid
and water-carried wastes.
PLUMBING FIXTURES
Receptacles intended to receive and discharge water, liquid
or water-carried wastes into a drainage system with which they are
connected.
PLUMBING SYSTEM OF A BUILDING
Includes the water supply service and distribution pipes;
the fixtures and fixture traps; the soil, waste and vent pipes; the
house drain and house sewer; the stormwater drainage; and the devices,
appurtenances and connections of the foregoing, all within or adjacent
to the building.
SIZE AND LENGTH
The given caliber or size of pipe other than brass pipe is
for a nominal internal diameter. Brass pipe is measured by its inside
diameter. The developed length of a pipe is its length along the center
line of the pipe and fittings.
SOIL PIPE
Any pipe which conveys the discharge of water closets, with
or without the discharges from other fixtures, to the house drain.
STACK
A general term for any vertical line of soil, waste or vent
piping.
TRAP
A fitting or device so constructed as to prevent the passage
of air or gas through a pipe without materially affecting the flow
of sewage or waste water through it.
TRAP SEAL
The vertical distance between the crown weir and the dip
of the trap.
VENT PIPE
Any pipe provided to ventilate a house drainage system and
to prevent trap siphonage and back pressure.
WASTE PIPE and SPECIAL WASTE
A "waste pipe" is any pipe which receives the discharge of
any fixture except water closets and conveys the same to the house
drain, soil or waste stacks. When such pipe does not connect directly
with a house drain or soil stack, it is termed a "special waste."