Plumbing Test

To prevent the entry of rodents into the building, strainer plates on drain inlets shall be be installed so that the openings are not greater than ____ inches in the least diameter.

A pipe sleeve used for pipe protection shall be ____ greater than the size of the pipe passing through the wall.

Water service piping shall be installed not less than ____ below the finished grade.

When trenches are over excavated, backfilling shall be placed in layers of ____ inches maximum depth.

Protective shield plates shall extend a maximum of ____ inches above the sole plate and below the top plate.

When rock is encountered in trenching, it shall be removed to a maximum of ____ inches below the bottom of the pipe.

When cast iron pipe in 10-foot is used, the maximum horizontal spacing of hangers is ____ feet.

Water supply systems may be tested with an air test of not less than ____ psi.

Rigid support sway bracing for plastic pipe shall be provided at changes in direction greater than 45 degrees for pipe size ____ inches and larger.

Air tests for the DWV system are conducted with a pressure of ____ psi.

Water closets shall not be closer than ____ inches from the centerline to any sidewall.

Separate employee facilities shall not be required in occupancies in which ____ or less people are employed.

In office buildings, bathroom and toilet rooms, urinals shall not be substituted for more than ____ percent of the required water closets.

The path of travel to the required facilities for an employee in a covered mall shall not exceed ____ feet.

Shower valves shall be equipped with a means to limit the maximum setting to ____ degrees Fahrenheit.

Bathtubs shall have waste outlets at least 2" in diameter.

The water supply to flush tanks equipped for automatic flushing shall be controlled with a timing device or sensor control device.

Fixtures for dormitories are based on one water closet per eight male or female students.

Trough urinals are permitted where approved by the Code Official.

The outlet of a pressure temperature or other relief valve may be directly connected to the drainage system.

Water heaters than contain a potential source of ignition must be elevated at least ____ inches in garages.

Bottom fed water heaters shall have a vacuum relief valve installed.

A water heater used as part of a space heating system shall have a maximum outlet water temperature of ____ degrees.

Water heaters installed in crawl spaces shall be supported on a solid base at least ____ inches thick.

Relief valves shall discharge piping shall be piped within ____ of the floor.

The cold water line valve shall be installed on the same floor and within ____ of the water heater served.

The maximum travel distance to an attic water heater from the access opening to the water heater is ____ feet.

Drain pan drain lines extended to the exterior of the building are allowed to terminate at a maximum height of ____ inches.

The minimum dimension of the required access opening into a crawl space for servicing and replacing water heaters is ____ x ____.

Where water pressure within a building exceeds ____ psi static, an approved water pressure reducing valve with a strainer shall be installed to reduce the pressure to ____ psi static.

The required capacity of residential sinks is ____ gallons per minute.

A device designed and installed to separate and retain for removal, by automatic or manual means, deleterious, hazardous, or undesirable matter from normal wastes, while permitting normal sewage or wastes to discharge into the drainage system by gravity.

Water service pipe and the building sewer shall be separated by ____ feet of undisturbed or compacted soil when the sewer pipe does not conform to Table 702.2.

Additions, alterations, or repairs shall not cause an existing system to become ____, unsanitary or overloaded.

Water heaters and storage tanks shall be located and connected so as to provide ____ for observation, maintenance, servicing and replacement.

Facilities that are required for employees shall have a maximum travel distance of ____ from the employee’s regular working area.

Where separate systems of sanitary drainage and storm drainage are installed in the same property, the sanitary and the storm building sewers or drains shall be ____ to be laid side by side in one trench.

Hot water distribution pipe and tubing shall have a minimum pressure rating of ____ psi at 180*F.

In each bathroom or toilet room not used for assembly or educational purposes, urinals shall not be substituted for more than ____ percent of the required water closets.

For water service piping cement or concrete joints shall be ____.

Any pipe that passes within ____ under a footing or through a foundation wall shall be provided with a relieving arch or pipe built into the foundation wall.

Piping within a public or private premise that conveys sewage, rainwater, or other liquids wastes to a point of disposal.

Lavatories shall have a minimum ____ inch water supply pipe.

Gas appliance connectors shall have an overall length not to exceed ____.

A water hammer arrester shall be used where ____ ____ valves are utilized.

A boiler completely filled with water, which furnishes hot water to be used externally to itself.

Pipes and pipe fittings, including valves and faucets, utilized in the water supply system shall have a maximum of ____% lead content.

All water service piping installed outside of the structure and underground shall have a minimum working pressure rating of ____ psi.

Attic passageways for electric water heaters shall not be less than 30 inches high and 22 inches wide and not more than ____ feet in length.

One way valve designed to allow air to enter the plumbing drainage system when negative pressures develop in the piping system.

Gas water heater vent connectors shall not be covered with ____.

Waste outlets serving showers shall be at least ____ inches in diameter.

A piping arrangement in which a drain from a fixture, appliance, or device discharges directly into another fixture, receptacle or interceptor at a point below the flood level rim.

All indirect waste piping that exceeds 2 feet in developed length measured horizontally, or 4 feet in total developed length, shall be ____.

Any pipe or fitting that makes an angle of less than 45 degrees with the horizontal.

2.5” or less horizontal drainage pipe shall slope a minimum of ____ inch per foot.

A type “B” or a type “L” vent used to vent a gas-fired water heater shall terminate at least ____ feet in vertical height above the highest connected equipment draft hood or flue collar.

The temperature of water from tankless water heaters shall be a maximum of ____ degrees F when intended for domestic use.

The size of the drainage piping shall not be ____ in size in the direction of the flow.

Installing waste piping at a slope greater than ½” per foot of run will insure proper drainage?

Trough urinals shall be ____.

A pressure spike in the water distribution system occurring during thermal expansion is caused by ____?

Restaurants shall have a minimum of 1 lavatory for each ____ persons.

Air chambers absorb shock in water piping systems by compressing air during abrupt changes in flow rate – true or false:

The supply lines and fittings for every plumbing fixture shall be installed so as to prevent ____.

Is acrylonitrile butadiene styrene pipe approved for above-ground storm drainage pipe?

Plumbing fixtures shall be installed so as to afford easy access for ____ both the fixture and the area around the fixture.

Air that is provided to replace air being exhausted.

Joints for hub and spigot pipe shall be firmly packed with ____ or hemp.

Joint compound tape shall be applied on the ____ threads only.

Cleanouts with opening at a finished wall shall have the face of the opening located within ____ of the finished wall surface.

Whirlpool bathtub pumps shall be located ____ the weir of the fixture trap.

The static pressure applied at the base of a column of water is proportional to the height of the column of water.

Water closet bowls for public or employee toilet facilities shall be of the ____ type.

The principal pipe artery to which branches are connected.

When sizing a Natural Gas less than 2-pound semi-rigid copper fuel gas system with .5 IWC pressure drop and a specific gravity of 0.60, the maximum cubic feet per hour of gas flow allowed through a 5/8” ACR tube 70 feet in length is:

The maximum number of lavatories on a 2 ½” horizontal waste line is:

Hub and Spigot cast-iron piping in 10-foot lengths, installed horizontally, shall be supported at intervals not more than:

A water closet, lavatory, or bidet shall not be closer than ____ inches from its center to any side wall, partition, vanity, or other obstruction.

The minimum size vertical drain for a residential kitchen sink with a food waste grinder is:

A three-inch horizontal drainage pipe shall be run in practical alignment and at a uniform slope of not less than ____.

The vent for a kitchen sink serves as a drain for a laundry tray, the size of the wet vented section is:

What is the maximum developed length of a 1 ½” vent on a 2” waste stack carrying 20 DFU’s?

A pressure regulator and strainer is required when the local water pressure in excess of:

A secondary roof drainage system is permitted to discharge ____.

A vent connector on a gas water heater shall be installed with a minimum rise of:

The minimum size common vent for 5 lavatories at different levels is:

A valve that has the highest friction loss to water flow is the:

What is the maximum DFU load a 4” wet vent can carry?

A backwater valve is used to:

Prohibited on combination waste and vent systems are:

One of the following is not a standard fitting:

A 6" horizontal storm drain pipe installed with a 2% slope will be adequate for what maximum size roof area with a 3" per hour rainfall rate?

Is schedule 80 galvanized steel pipe allowed by Code for underground drainage and vent piping?

A Quorum for the North Carolina Building Code Counsel is:

Can the State Board suspend your license for charging excessive prices?

When calculating indoor combustion air requirements for a water heater, how much combustion air does a 65,000 btu/hr water need for the space to be considered unconfined?

ABS DWV pipe installed horizontally shall be supported at intervals not to exceed:

A 60 GPM sewage injector pump is connected to a drain line with a 40 DFU load already on the line. What is the new DFU load after connecting the ejector?

Indirect waste pipes shall be trapped when the total developed length exceeds: