Indiana Administrative Code › Title 675 - FIRE PREVENTION AND BUILDING SAFETY COMMISSION › Article 15 - INDUSTRIALIZED BUILDING SYSTEMS › Rule 2 - Indiana Mobile Structures Code › Section 2-34 - Definitions for plumbing standards

Current through July 10, 2024
Authority: IC 22-13-2-13
Affected: IC 22-12; IC 22-13; IC 22-14; IC 22-15
Sec. 34.
The following definitions are applicable to the provisions
				  of 675 IAC 15-2-32-675 IAC
				  15-2-70:
"Air gap (water distribution system)" means the unobstructed
				  vertical distance through the free atmosphere between the lowest opening from
				  any pipe or faucet supplying water to a tank, plumbing fixture, water supplied
				  appliance, or other device and the flood level rim of the receptacle.
"Anti-siphon trap vent device" means a device which
				  automatically opens to admit air to a fixture drain above the connection of the
				  trap arm so as to prevent siphonage, and closes tightly when the pressure
				  within the drainage system is equal to or greater than atmospheric pressure so
				  as to prevent the escape of gases from the drainage system into the mobile
				  structure.
"Backflow" means the flow of water or other liquids,
				  mixtures, or substances into the distributing pipes of a potable supply of
				  water from any source or sources other than its intended sources.
"Backflow connection" means any arrangement whereby backflow
				  can occur.
"Backflow preventer" means a device or means to prevent
				  backflow.
"Branch" means any part of the piping system other than a
				  riser, main or stack.
"Common vent" means a vent connecting at the junction of
				  fixture drains and serving as a vent for more than one (1) fixture.
"Continuous vent" means a vertical vent that is a
				  continuation of the drain to which it connects.
"Continuous waste" means a drain from two (2) or more
				  fixtures connected to a single trap.
"Critical level" means the C-L or C/L marking on a backflow
				  prevention device or vacuum breaker is a point established by the testing
				  laboratory (usually stamped on the device by the manufacturer) which determines
				  the minimum elevation above the flood level rim of the fixture or receptacle
				  served on which the device may be installed. When a backflow prevention device
				  does not bear a critical level marking, the bottom of the vacuum breaker,
				  combination valve, or of any such approved or listed device shall constitute
				  the critical level.
"Cross connection" means any physical connection or
				  arrangement between two (2) otherwise separate systems or sources, one of which
				  contains potable water and the other either water, steam, gas, chemical or
				  unknown or questionable materials whereby there may be a flow from one (1)
				  system or source to the other, the direction of flow depending on the pressure
				  differential between the two (2) systems.
"Developed length" means that length of pipe measured along
				  the center line of the pipe and fittings.
"Diameter" means the nominal (inside) diameter designated
				  commercially, unless specifically stated otherwise.
"Drain" means a pipe that carries waste, water, or
				  water-borne wastes in a drainage system.
"Drain connector" means the removable extension, consisting
				  of all pipes, fittings and appurtenances, from the drain outlet to the drain
				  inlet serving the mobile structure.
"Drain outlet" means the lowest end of the main or secondary
				  drain to which a sewer connection is made.
"Drainage system" means all piping within or attached to the
				  structure that conveys sewage or other liquid waste to the drain outlet, not
				  including the drain connector.
"Fixture drain" means the drain from the trap of a fixture to
				  the junction of that drain with any other drain pipe.
"Fixture supply" means the water supply pipe connecting a
				  fixture to a branch water supply pipe or directly to a main water supply
				  pipe.
"Flood level" means the level in the receptacle over which
				  water would overflow to the outside of the receptacle.
"Flooded" means the condition which results when the liquid
				  in a container or receptacle rises to the flood-level.
"Flush tank" means that portion of a toilet that is designed
				  to contain sufficient water to adequately flush the fixture.
"Flush valve" means a device located at the bottom of a flush
				  tank for flushing a toilet.
"Flushometer valve" means a device which discharges a
				  predetermined quantity of water to a fixture for flushing purposes and is
				  closed by direct water pressure.
"Grade" means the fall (slope) of a pipe in reference to a
				  horizontal plane expressed in inches per foot length.
"Horizontal branch" means a drain pipe extending laterally,
				  which receives the discharge from one or more fixture drains and connects to
				  the main drain.
"Horizontal pipe" means any pipe or fitting which makes an
				  angle of more than forty-five degrees (45 °) with the vertical.
"Individual vent" means a pipe or anti-siphon trap vent
				  device installed to vent a fixture drain.
"Inlet coupling" means the terminal end of the water system
				  to which the water service connection is attached. It may be a swivel fitting
				  or threaded pipe end.
"Main" means the principal artery of the system to which
				  branches may be connected.
"Main drain" means the lowest pipe of a drainage system which
				  receives sewage from all the fixtures within a mobile structure and conducts
				  these wastes to the drain outlet.
"Main vent" means the principal artery of the venting system
				  to which vent branches may be connected.
"Offset" means a combination of pipe and/or fittings that
				  brings one section of the pipe out of line but into a line parallel with the
				  other section.
"Pitch". (See "grade".)
"Plumbing fixtures" means receptacles, devices, or appliances
				  which are supplied with water or which receive liquid-borne wastes for
				  discharge into the drainage system.
"Plumbing system" includes the water supply and distribution
				  pipes; plumbing fixture and traps; soil, waste, and vent pipes; and
				  water-treating or water using equipment.
"Primary vent". (See "main vent".)
"Relief vent" means an auxiliary vent which permits
				  additional circulation of air in or between drainage and vent systems.
" Secondary vent" means any vent other than the main vent or
				  those serving each toilet.
"Sewage" means any liquid waste containing animal or
				  vegetable matter in suspension or solution, and may include liquids containing
				  chemicals in solution.
"Siphonage" means the loss of water seal from fixture traps
				  resulting from partial vacuum in the drainage system which may be of either of
				  the following two types, or a combination of the two:
(a) Self-siphonage resulting from vacuum in a
				fixture drain generated solely by the discharge of the fixture served by that
				drain, or,
(b) induced siphonage
				resulting from vacuum in the drainage system generated by the discharge of one
				(1) or more fixtures other than the one under observation.
"Toilet-mechanical seal" means a toilet fitted with
				  water-flushing device and mechanically sealed trap.
"Toilet-recirculating chemical" means a self-contained,
				  circulating toilet in which the waste is chemically treated.
"Trap" means a fitting or device designed and constructed to
				  provide a liquid seal that will prevent the back passage of air without
				  materially affecting the flow of liquid waste through it.
"Trap arm" means that portion of a fixture drain between a
				  trap and its vent.
"Vacuum breaker". (See "backflow preventer".)
"Vent caps" means a device or fitting which protects the vent
				  pipe from foreign substances with an opening to the atmosphere equal to the
				  area of the vent it serves.
"Vent system" means that part of a piping installation which
				  provides circulation of air within a drainage system.
"Vertical pipe" means any pipe or fitting which makes an
				  angle of forty-five degrees (45 °) or less with the vertical.
"Water connection" means the fitting or point of connection
				  for the mobile structure water distribution system designed for connection to a
				  water supply.
"Water connector" means the removable extension connecting
				  the mobile structure distribution system to the water supply.
"Water distribution system" means the potable water piping
				  within or permanently attached to the mobile structure.
"Wet vent" means a vent which also serves as a drain for one
				  or more fixtures.
"Wet vent drainage system" means a specially designed system
				  of drain piping that also vents one or more plumbing fixtures by means of a
				  common waste and vent pipe.