CT Plumber flashcards

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

P-1 license

Connecticut journeyperson plumber license issued by the Department of Consumer Protection; allows the holder to perform plumbing work under the authority of a licensed plumbing contractor.

P-2 license

Connecticut master plumber license; allows the holder to hold the license for a plumbing contracting business and to supervise plumbing work performed by journeypersons and apprentices.

Permit validity period

In Connecticut, a plumbing permit is generally valid for 180 days from issuance and may be extended; work must be inspected at required stages before it is concealed.

Code appeal authority

The State Building Code Standards Committee hears appeals of local building official decisions; licensing and disciplinary matters fall to the Department of Consumer Protection.

Air gap definition

An unobstructed vertical distance through free atmosphere between a potable water outlet and the flood level rim of a receptacle; the minimum is twice the pipe diameter and never less than 1 inch.

T&P relief valve

A temperature and pressure relief valve protects a water heater; the discharge pipe must be full size, unobstructed, and terminate 6 to 24 inches above the floor or outside.

Pressure-reducing valve

A device required where static water pressure exceeds 80 psi; it reduces pressure to a safe level and must be installed with a strainer and accessible for service.

Backflow prevention device

An approved assembly such as an RPZ or double-check valve that prevents reverse flow of contaminated water into the potable supply; RPZ devices require annual testing.

Water closet flush limit

A water closet may not exceed 1.6 gallons per flush; urinals may not exceed 1.0 gallon per flush under current federal and state efficiency standards.

Showerhead flow limit

Residential showerheads are limited to 2.5 gallons per minute at 80 psi; multiple showerheads in a shower are counted together for the flow limit.

Water closet clearance

A water closet requires at least 15 inches from its centerline to any sidewall or partition and at least 21 inches of clear space in front of the bowl.

Fixture drain minimum size

Lavatories require at least 1-1/4 inch drains, kitchen sinks and bathtubs 1-1/2 inch, and water closets 3 inch; the trap must match the fixture drain size.

T&P discharge termination

The relief valve discharge pipe must terminate 6 to 24 inches above the floor, to a safe point of discharge, with no trap, no reduction in size, and no threaded end.

Thermal expansion control

A closed water system with a backflow preventer requires an expansion tank or other approved device to absorb thermal expansion and prevent relief valve discharge and pressure damage.

Water heater in garage

A fuel-fired water heater installed in a garage must be elevated at least 18 inches above the floor to keep the ignition source above flammable vapors.

Vacuum relief valve

A device installed on a water heater to prevent back-siphonage when the supply pressure drops; required where the heater has a bottom inlet and no check valve.

Minimum service size

A single-family dwelling water service must be at least 3/4 inch nominal; the service must be sized for the fixture-unit load and the available pressure.

Frost depth

The depth below grade to which soil freezes; in Connecticut water service lines must be buried below the frost depth, commonly taken as 36 inches.

Water and sewer separation

Water piping must be separated from sewer piping by at least 12 inches vertically with the water above, or 5 feet horizontally, to prevent contamination.

Fixture unit

A unit of measure that expresses the drainage load of a fixture; it is used to size the building drain, building sewer, and vent systems from code tables.

Drain slope requirement

Drainage pipe 2-1/2 inches and smaller must slope at 1/4 inch per foot; 3-inch and larger pipe may slope at 1/8 inch per foot where approved.

Trap-to-vent distance

The vent must connect within 5 feet of a 1-1/2 inch trap and within 3 feet of a 1-1/4 inch trap; the distance is measured along the drain pipe.

Vent stack termination

A vent stack must extend at least 6 inches above the roof or above the snow line, and must be at least 1-1/2 inch for a single fixture.

Cleanout location

Cleanouts are required at the base of the stack, at the building drain, and at intervals not exceeding 100 feet horizontally; they must be accessible and full size.

Roof drain sizing

Roof drains and leaders are sized from the roof area and the 100-year, 1-hour rainfall intensity; secondary overflow drains or scuppers must handle the design storm.

Storm sewer separation

Storm drainage may not connect to the sanitary sewer; it must discharge to an approved storm system or point of disposal and must not create a nuisance.

Trap seal depth

Every trap must maintain a liquid seal of 2 to 4 inches; the trap must be self-cleaning and accessible for cleaning, with a cleanout on traps 3 inches and larger.

Grease interceptor sizing

A grease interceptor is sized by fixture units and flow rate with a required grease retention capacity; it must be outside the building, baffled, vented, and accessible.

Trap primer

A device that supplies water to a floor drain trap to maintain its seal; it must be accessible and protected from backflow with an approved device.

Gas sediment trap

A sediment trap is required at each gas appliance, installed downstream of the shutoff valve with the trap leg vertical, to collect dirt and moisture before the controls.

Gas piping test pressure

Low-pressure gas piping must be tested at 1-1/2 times the working pressure but not less than 3 psi for at least 10 minutes; the test must be witnessed.

Isometric drawing

A three-dimensional piping drawing with the vertical axis drawn vertically and horizontal axes at 30 degrees; it shows pipe sizes, valves, cleanouts, and direction changes.