2021 ICC P1 Residential Plumbing Inspector Exam Quiz

A cleanout must be installed at the base of every:

Slip joints are permitted to be used in residential plumbing systems ONLY on the:

When an Air Admittance Valve (AAV) is used to vent a fixture, it must be installed a minimum of ________ above the horizontal branch drain or fixture drain being vented.

To protect against cross-connection, all outdoor hose bibbs must be equipped with a:

Every building must have at least one main vent that extends to the outdoors. The vent terminal must extend at least ________ above the roof.

Standard fixture traps must have a liquid seal depth of not less than ________ and not more than ________.

The discharge tube from a water heater temperature and pressure (T&P) relief valve must terminate no more than ________ above the floor or waste receptor.

The standpipe serving a clothes washer must extend a minimum of ________ and a maximum of ________ above the trap weir.

For horizontal drainage piping that is 2.5 inches in diameter or smaller, what is the minimum required uniform slope?

Water service pipe shall be installed not less than ________ deep, or not less than 6 inches below the frost line, whichever is greater.

If a pipe passes through a framing member and the hole is within ________ of the exposed edge of the member, a steel shield plate must be installed to protect the pipe from screws and nails.

What is the maximum allowable distance between cleanouts on a horizontal drain line?

If a vent pipe terminates outside, it must be located at least ________ horizontally from any openable window or door, unless it is at least 3 feet above the opening.

A 1.5-inch fixture drain (trap arm) has a maximum allowable distance from the trap weir to the vent fitting of:

What is the minimum required interior cross-sectional area for a standard residential shower compartment?

What is the minimum required diameter for a residential water service pipe supplying a dwelling?

When installing horizontal PVC piping for plumbing drainage, what is the maximum allowable distance between supports?

If a water heater is installed in a location where a leak could cause structural damage, a galvanized steel or plastic drain pan must be installed. The drain pipe from this pan must have a minimum inner diameter of:

A water closet must have a minimum clearance of ________ from its center to any side wall or partition.

If the static water pressure at the building entrance exceeds ________, an approved pressure-reducing valve (PRV) must be installed.