ICC P2 flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Plumbing permit

Official authorization required before installing or altering a plumbing system, except for minor repairs listed in the code; work without it is a violation.

Stop-work order

Written notice requiring work to halt when the code official finds work unsafe, contrary to code, or without a permit; work resumes only after rescission.

Final inspection

Inspection after plumbing work is complete and accessible; approval is needed before the system is placed in service or occupancy is allowed.

Board of appeals

Local body that hears appeals of code official decisions and may grant variances only when strict application causes practical difficulty.

Approved plans

Plans reviewed and stamped by the code official; plumbing must be installed in accordance with them, and changes require reapproval.

Approved

A material, method, or product acceptable to the code official because it conforms to the code or an approved standard.

Potable water

Water free from impurities in quantities that could cause disease or harmful physiological effects, acceptable for drinking and domestic use.

Cross-connection

Any actual or potential physical connection between a potable water supply and a nonpotable source that could allow contamination.

Air gap

Unobstructed vertical distance between the lowest opening of a water outlet and the flood level rim of the fixture it supplies.

Fixture unit

A dimensionless measure of the probable load a plumbing fixture places on the drainage system or water supply system.

Water closet clearance

At least 15 inches from centerline to sidewall, 15 inches to adjacent fixture, and 21 inches in front to wall or obstruction.

Trap seal

Vertical depth of water in a trap that prevents sewer gas from entering the building; must be between 2 and 4 inches.

T&P relief valve

Device on a water heater that opens at excessive temperature or pressure to prevent explosion; discharge must be piped to a safe location.

Hose bibb vacuum breaker

Backflow preventer installed on a hose connection to stop contaminated water from being siphoned into the potable water supply.

Flammable vapor ignition

Water heaters in garages must be elevated 18 inches above the floor unless listed as flammable vapor ignition resistant.

Grease interceptor

Plumbing appurtenance that separates fats, oils, and grease from wastewater before discharge, required for many food service establishments.

Residual pressure

Pressure remaining at a fixture or outlet while water flows; code sets minimums such as 8 psi for tank-type water closets.

Pressure-reducing valve

Device required when static water pressure exceeds 80 psi to lower pressure and protect the plumbing system.

RPZ assembly

Reduced pressure zone backflow preventer providing high-hazard protection; includes two check valves and a relief valve.

Water service pipe

Pipe from the water main or source to the building, sized for demand and buried below frost line or protected.

Thermal expansion tank

Device installed on a closed water heater system to absorb expanded water and prevent excessive pressure.

Velocity limit

Maximum water flow speed in distribution piping, commonly 8 fps for cold water and 5 fps for hot water.

Drainage slope

Horizontal drainage pipe must slope 1/4 inch per foot for 2 1/2 inch and smaller, and 1/8 inch per foot for 3 inch and larger.

Trap arm

Pipe section between a fixture trap and its vent; its maximum length depends on trap size and is limited by code.

Cleanout

Access opening in a drainage pipe for clearing stoppages; required at base of stacks and at specified intervals and changes of direction.

Vent termination

Vent pipe must extend at least 6 inches above the roof and away from windows, doors, or air intakes.

Backwater valve

Device installed on a drainage line to prevent sewage from reversing into the building when the public sewer surcharges.

Wet vent

A vent that also serves as a drain for one or more fixtures, allowed only where code permits and sized accordingly.

Roof drain

Drain fitting that receives rainwater from a roof and connects to storm drainage piping sized by roof area and rainfall rate.

Secondary roof drainage

Backup drainage such as overflow drains or scuppers required to handle rainwater if primary roof drains become blocked.

Storm sewer connection

Storm drainage must discharge to an approved storm system or receiving water and must not connect to the sanitary sewer unless approved.

Sump pump

Pump that removes accumulated water from a sump or pit and discharges it to an approved location, not the sanitary sewer without approval.