BGR Logo

National Standard Journeyman Plumber

ICC Exam Workbook Sample Questions

Back to BGR Website

105. What is the required minimum flow rate and flow pressure to be provided to a water closet, flushometer tank?

A. Flow rate 1.6 gpm, Flow Pressure 20 psi
B. Flow rate 25 gpm, Flow Pressure 15 psi
C. Flow rate 5 gpm, Flow Pressure 8 psi
D. Flow rate 6 gpm, Flow Pressure 20 psi


106. The overflow from any fixture must discharge into the drainage system on the ______________ side of the trap. Exceptions ignored.

A. inlet or fixture
B. outlet
C. back
D. waste


107. Storm drainage traps for individual conductors must be the same size as _______________________________.

A. waste drainage system
B. the horizontal drain to which they are connected
C. the floor drain grill used
D. any of these



108. All hospitals must have _______________ installed in such a manner so as to minimize the potential for an interruption of the supply of water in the event of a water main or water service pipe failure.

A. an emergency private well or storage tank
B. oversized water service entrance piping
C. two water service pipes
D. any of these





109. Where street water main pressures fluctuate, the building water distribution system must be designed for the ____________ pressure available.

A. maximum
B. normal
C. minimum
D. average


110. The maximum vertical distance from a plumbing fixture outlet to the trap weir may not exceed _____________, inlet of the trap. Exceptions ignored.

A. 12 inches
B. 18 inches
C. 24 inches
D. 30 inches



111. Potable water gravity tanks or manholes of potable water pressure tanks must not be located directly ______ any soil or waste piping or any source of contamination.

A. over
B. under
C. next to
D. none of these



112. Conductor pipes for storm drains may not be used as __________________, and vent pipes may not be used as ____________.

A. soil, waste or vent pipes, conductors
B. storm sewer drain pipes, conductors
C. conductor pipes, conductor pipes
D. any of these





113. All potable water wells and springs must be constructed such that ______________________________.

A. the well casing extend a minimum of 25 feet below grade level.
B. It is a minimum of 50 feet from a barnyard
C. surface drainage will be diverted away from the well or spring
D. none of these
E. all of these


114. Steel shielding protective plates used to protect pipes where the framing members are notched or bored must be at least _____________.

A. 0.0575-inch-thick
B. 0.125-inch-thick
C. 0.002-inch-thick
D. 0.1000-inch-thick inches


115. Upon completion of a section of or the entire water supply system, the system, or portion completed must be tested and proved tight under a water pressure not less than the working pressure of the system; or, for piping systems other than plastic, by an air test of not less than ___________________.

A. 10 psi
B. 20 psi
C. 40 psi
D. 50 psi


116. Each water closet utilized by the public or employees must occupy a separate compartment with walls or partitions and a door enclosing the fixtures to ensure privacy. With the following exceptions.

A. Toilet rooms located in day care facilities and containing two or more water closets shall be permitted to have one water closet without an enclosing compartment.
B. Non unisex toilet rooms
C. Water closet compartments shall not be required in a single-occupant toilet room with a lockable door.
D. any of these
E. A and C
117. What is the total cold water supply fixture units (wsfu) load value assigned in the International Plumbing Code for a private water closet with a flushometer valve?

A. 2.7 water supply fixture units (wsfu)
B. 1.0 water supply fixture units (wsfu)
C. 2.4 water supply fixture units (wsfu)
D. 1.4 water supply fixture units (wsfu)


118. A vertical measurement of distance, 8 feet (2438 mm) or more in developed length, between the connections of horizontal branches to a drainage stack. Measurements are taken down the stack from the highest horizontal branch connection.

A. BRANCH VENT
B. BRANCH INTERVAL
C. COMMON VENT
D. SUCTION DISTANCE


119. Where a potable public water supply is not available, individual sources of potable water supplies that may be utilized are __________________________, dependent on geological and soil conditions and the amount of rainfall.

A. drilled wells, driven wells, dug wells, bored wells,
B. springs
C. streams or cisterns
D. any of these
E. A and B


120. The length of a pipeline measured along the centerline of the pipe and fittings.

A. CRITICAL LEVEL
B. DEPTH OF WATER SEAL
C. DEVELOPED LENGTH
D. NONE OF THESE


121. To meet minimum lavatory requirements, in group wash-up lavatory equipment, every ______________ of rim space is considered to be one lavatory.

A. 10 inches
B. 20 inches
C. 30 inches
D. 36 inches


122. For building sewers 8 inches and larger, manholes must be provided and located not more than ______________ from the junction of the building drain and building sewer, at each change in direction and at intervals of not more than ______________ apart.

A. 100 feet, 200 feet
B. 200 feet, 200 feet
C. 200 feet, 400 feet
D. 400 feet, 400 feet


123. What is the minimum size waste trap that can be used for an emergency floor drain?

A. 1-1/4 inch
B. 1-1/2 inch
C. 2 inch
D. 2-1/2 inch


124. A vent terminal terminates under the overhang of a buildings roof. Is this a legal installation as regulated by the National Plumbing Code? Exceptions ignored.

A. No, not under any circumstances
B. Yes, this is in compliance with the code under any circumstances.
C. No, unless the overhang has soffit vents
D. Yes, unless the overhang has soffit vents





125. For required employee toilet facilities in all occupancies.

A. Employee toilet facilities may be either separate or combined employee and public toilet facilities.
B. Employee toilet facilities must be for employees only.
C. Employee toilet facilities must be combined employee and public toilet facilities.
D. none of these


126. Sheet copper for general plumbing applications shall not weigh less than ____________________.

A. 8 ounces per square foot
B. 4 ounces per square foot
C. 12 ounces per square foot
D. none of these


127. A lavatory faucet has a spout 1/2 inch in diameter. The distance from the inside-edge of the spout to a wall is 1 inch. What is the required minimum air gap from the faucet opening to the highest water level attainable in the sink before overflow features of the sink are engaged?

A. 1 inch
B. 1-1/2 inches
C. 2 inches
D. 3 inches



128. The water supply to a garbage can washer must be protected against backflow by ___________________

A. a sink gap
B. a check valve
C. an air gap and a backflow preventers
D. an air gap or backflow preventers




129. What is the maximum number of drainage fixture units allowed to discharge into one branch interval of a waste drainage system if the waste stack size is 2 inches?

A. 1 drainage fixture unit
B. 2 drainage fixture units
C. 4 drainage fixture units
D. 16 drainage fixture units
E. No limit


130. What is the maximum number of drainage fixture units allowed to discharge into one branch interval of a waste drainage system if the waste stack size is 3 inches?

A. 1 drainage fixture unit
B. 2 drainage fixture units
C. 8 drainage fixture units
D. 16 drainage fixture units
E. No limit


131. When testing a fuel gas piping system, mechanical gauges used to measure test pressures for system leaks must have a range such that the highest end of the scale is not greater than ________ times the test pressure.

A. two
B. three
C. five
D. ten


132. Drinking water fountains, single orifice not greater than 7/16 inch in diameter or multiple orifices with a total area of 0.150 square inch (area of circle 7/16 inch in diameter) that are away from a wall require a minimum air gap distance of ____________.

A. 1 inch
B. 1-1/2 inches
C. 2 inches
D. 3 inches
E. Two times the diameter of the effective opening
133. Plumbing systems and equipment in structures erected in flood hazard areas must be constructed in accordance with the requirements of the International Plumbing Code and the __________________________.

A. Federal Emergency Management Administration (FEMA)
B. National Fire Protection Association
C. Uniform Building Code
D. International Building Code



134. A 3 inch schedule 40 metallic pipe natural gas line is 400 feet long. The inlet pressure is 1.8 psi. What is the capacity of gas volume in cubic feet per hour. The fuel is natural gas with and inlet pressure of less than 2 psi and a pressure drop of 0.3 inches on a water column.

A. 1170 cubic feet per hour
B. 2578 cubic feet per hour
C. 268 cubic feet per hour
D. 963 cubic feet per hour



135. Where a potable public water supply is not available, _______________ of potable water supply shall be utilized.

A. tank storage
B. purification systems
C. individual sources
D. none of these



136. A potable ground water source or pump suction line may not be located less than ____________ from a septic tank.

A. 100 feet
B. 25 feet
C. 50 feet
D. 75 feet


137. The annular space between the outside of a pipe and the inside of a pipe sleeve or between the outside of a pipe and an opening in a building envelope wall, floor, or ceiling assembly penetrated by a pipe must be ____________________________ .

A. filled or tightly caulked and packed with oakum
B. insulated with a material which will not corrode the pipe.
C. sealed in an approved manner with caulking material, foam sealant or closed with a gasketing system
D. lubricated with an approve lubricant to allow for movement



138. The minimum slope of a 12 inch horizontal drainage pipe is __________.

A. 1/4 inch per foot
B. 1/8 inch per foot
C. 1/16 inch per foot
D. level



139. Horizontal branches must connect to the bases of stacks at a point located not less than _____downstream from the stack. Horizontal branches shall connect to horizontal stack offsets at a point located not less than ____ downstream from the upper stack.

A. 12 inches, 12 inches
B. 5 times the diameter of the drainage stack, 5 times the diameter of the drainage stack
C. 10 times the diameter of the drainage stack, 10 times the diameter of the drainage stack
D. 10 times the diameter of the drainage stack, 5 times the diameter of the drainage stack







140. If the water supply piping for a bathtub, where the developed length of the distribution line is 50 feet or less, and the available pressure at the meter is a minimum of 35 psi, the minimum size of an individual distribution line supplied from a manifold and installed as part of a parallel water distribution system may be _________ inch(es).

A. 3/8 inch
B. 1/2 inch
C. 3/4 inch
D. 1 inch


141. A vent connecting at the junction of two fixture drains or to a fixture branch and serving as a vent for both fixtures.

A. COMMON VENT
B. BRANCH VENT
C. SEWER VENT
D. DRAIN VENT



142. At the points of interconnection between the hot and cold water supply piping systems and the individual fixtures, appliances or devices, provisions must be made to __________________ such piping systems.

A. prevent flow between
B. to mix and balance
C. pressure balance
D. any of these



143. The minimum slope of a 2 inch horizontal drainage pipe is ___________.

A. 1/4 inch per foot
B. 1/8 inch per foot
C. 1/16 inch per foot
D. level

Back to BGR Website