North Carolina State Board for Plumbing

Garbage can washers shall have a removable strainer to prevent the discharge of particles _______ or larger from entering the drainage system

When an electric water heater is installed in a sealed crawl space, a plastic high impact resistant pan of at least _____mm in thickness shall be installed.

When installing a gas-fired water heater, the gas valve shall be located in the same room as the water heater and within _____ feet of the water heater.

A job trailer is established on a multi-year commercial project for the purpose of carrying out the jobs contract.

Building sewers that connect to a private sewage disposal system shall not be less than ____inches below the finished grade.

You are replacing an electric water heater in a dwelling unit with an attached garage. The water heater is a like-for-like replacement and no permit was pulled. Are you required to install a carbon monoxide detector?

What is the maximum water temperature allowed per Code from bathtub and whirlpool bath tub valves?

For gridded and parallel water distribution manifolds, what is the maximum gpm through a 1-inch manifold when the velocity is 8 feet per second?

When a full-open valve is installed in a crawl space, the valve should be installed within ___mm of the crawl space access door?

When hazardous chemicals are introduced downstream from the device, a _______ cannot be used.

When unstable ground is present, the building sewer or building drain shall be constructed of _______ material standard pipe.

Building sewers 8 inches and larger shall have a manhole located not more than ____ feet from the junction of the building drain and the building sewer.

When an LP gas regulator requires a vent to the outside, the vent piping shall be located at least _____ feet horizontally from an opening or operable openings that are below the vent.

A 3 branch interval stack that is 3 inches in diameter can carry _____ drainage fixture units of drainage.

A 2-1/2" discharge pipe will have a minimum ____ gallons per minute capacity.

When the developed length of the vent is unknown, individual vents, branch vents, circuit vents and relief vents shall be sized not less than_____ the diameter of the vent of the drain served.

Stand pipes for indirect waste shall not be less than ____inches or more than ____inches in height as measured from the crown weir.

When potable water supplied trap seal primers are used for emergency floor drains, the discharge pipe from the trap seal primer shall connect to ________.

In buildings where an occupied top floor exceeds 75 feet in height, storm drainage conductors with an inside diameter of _____ shall not be used when the pipe is made of plastic.

When a water heater is used to supply both potable water and hot water for space heating, it shall be ______.

When a Code Official makes a determination you disagree with, you may appeal the decision to the Chief Engineer for the North Carolina Department of Insurance within how many days of the decision?

A final inspection must be made within ____ days of substantial completion.

What is the maximum discharge water temperature from a bidet fitting?

When shower liners consist of PVC sheets, the minimum thickness of the sheets shall be _______.

The maximum water temperature for footbaths, pedicure baths and head shampoo sinks is _____.

The discharge pipe from a relief valve shall terminate not more than 6 inches above and not less than ___ times the pipe diameter above the floor or the flood level rim of the waste receptor.

How many water services are required for hospitals?

When a sink is set close to the wall and the faucet has an effective opening not greater than .75 inch, the minimum air gap shall be ____.

When a sewer pump or ejector is connected to a septic tank, the pumped line shall be connected through a lateral wye into pipe at least ____ long.

A vent stack for a plumbing system is 6 feet from an outdoor air intake for an HVAC system. How high above the air intake must the vent be elevated?

When an air admittance valve is used in a stack application, it shall not be located less than ____ inches above the flood level rim of the highest fixture being vented.

When installing corrugated stainless-steel tubing (CSST) used for gas piping, is grounding and bonding a requirement for all CSST piping installed in residential occupancies?

When connecting a water heater with a 3inch flue connector, what is the maximum vent connector length without taking all Code exceptions in account?

Regulator vents for propane piping shall be located ____ feet from opening or operable opening that are below the vent.

When a piping system supplies gas to appliances designed to operate under 14 inches WC, gas supplies greater than ____ psi, over pressure protection devices shall be installed.

A 2-inch stack that is 3 branch intervals in height can carry up to ____ dfu.

Drinking water fountains shall not be required to be located in individual spaces provided that public drinking fountains are located within _____ feet of the most remote location in the tenant space.

Floor flanges of hard lead shall weigh not less than ____.

When clinical sinks are specified, a ______ shall be provided.

What is the maximum distance from the fixture to the point of connection to the water supply in respect to the water supply pipes?

The potable water supply to a boiler shall be equipped with a/an ______ backflow preventer.

When designing the water distribution system for a single family residence with partial fire sprinkler protection, how much larger does the water service pipe to the structure need to be?

The replacement of a building sewer pipe by the pipe-bursting method shall be limited to gravity drainage piping of sizes ____ inch and smaller.

You have completed a plan and spec commercial new construction building. However during the final inspection, it is determined there are insufficient facilities for the occupancy. Who is responsible for his problem?

Is a sump pump alarm required on a macerating toilet?

Local vent connections serving bedpan washers and normal plumbing systems are _______.

In other than dwelling units, when a branch line serves more than _______ fixtures, a valve must be installed to isolate all fixtures.

When a gas-fired water heater is installed indoors without a direct connection to the outdoors for combustion air, how many cubic feet of indoor air is required for each 1000 btu's of combustion capacity?

When plastic pipe is installed outside and underground, what is the maximum pressure allowed in the pipe when used to carry natural gas?

When running 5/8" O.D. copper fuel gas lines, what is the maximum spacing for supports when the pipe is run horizontally?