Tier 3 Exam 1 UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
A "drinking fountain" is provided with a device defined as a _______ to provide an orifice
elevation to assist in protecting the water supply
A. Backflow preventer
B. Stream projector
C. Atmospheric vacuum breaker
D. Check valve - CORRECT ANSWER Stream projector
A plumber is installing a shower stall in the master bath of a residential dwelling. Stall is
round with an inside diameter of 32 inches
The shower compartment is...
A. Compliant with the code
B. Not code compliant
C. Product-accepted by the board
D. Equal to the area of a 30 x 30 shower base - CORRECT ANSWER Compliant with
the code
A plumber is completing the drainage waste and vent connections in a new restaurant. A
dishwasher with a pre-rinse tray, (3)-pot/scullery sinks, and several indirect wastes will be
installed in this commercial kitchen.
A commercial food waste grinder installed at the pre-rinse sink shall _______
A. Have a minimum 3 inch drain connection
B. Be connected and trapped separately from other fixtures or compartments
,C. Enter a grease interceptor/separator regulated by a flow control valve
D. Only connect to the drainage system using DWV-copper tubing - CORRECT
ANSWER B. Be connected and trapped separately from other fixtures or compartments
A journeyman plumber and apprentice are renovating the DWV and water connections in an
existing Catholic Church. A public sanitary sewer, storm sewer and drywell are provided to
receive the waste and other liquids generated in this facility.
The liquid discharge from a _______ shall be conducted separately and directly to a drywell
in the ground, and shall not be used for any other drainage purpose.
A. Flushing rim sink
B. Lavatory
C. Cuspidor
D. Sacrarium - CORRECT ANSWER D. Sacrarium
A team of plumbers are installing the water, waste and vent piping for a 5-story residential
apartment complex. There are commercial laundry rooms provided on the 2nd and 4th floors
of the complex.
The minimum trap and standpipe diameter for each commercial clothes washing machine
shall be no less than _______
A. 2 inches
B. 3 inches
C. 1.5 inches
D. 2.5 inches - CORRECT ANSWER A. 2 inches
A journeyman plumber and apprentice are installing the finish plumbing in men's and ladies
restrooms in a restaurant. Wall hung water closets, lavatories, and urinals are being installed
in the respective toilet facilities.
,True or False: When determining the number of plumbing fixtures after the population has
been established by the authority having jurisdiction, should a fraction occur, round down to
the next fixture. - CORRECT ANSWER False
A plumber is installing the water, waste and vent system in a laundry facility. (18)-Eighteen
clothes washing machines will be installed using "stand-pipes" as receptors
The (18)-stand-pipes shall connect to a drain of sufficient size to receive the simultaneous
discharge of _______ of the clothes washing machines connected thereto.
A. 13
B. 33%
C. 14
D. 50% - CORRECT ANSWER C. 14
Commercial dishwashing machines that discharge by gravity shall be ________ connected,
except when the machine is located above or within five feet of a trapped floor drain, the
waste may be connected directly to the inlet side of a properly vented floor drain trap. -
CORRECT ANSWER Indirectly
A plumber is installing a three-sided shower stall in a new residential dwelling. The base of
the shower stall is formed and shaped as a rectangle. One side of the shower base measures
4'-6" in length and the opposite side is 3-feet.
Shower compartments and stalls shall have at least ________ square inches of floor area and
be not less than ________-inches in minimum dimension measured from its finished interior
dimension as the side of a rectangle, altitude of a triangle or diameter of a circle or other
angular shape.
A. 1,200 (24)
B. 900 (30)
C. 1,000 (18)
D. 2,000 (24) - CORRECT ANSWER B. 900 (30)
, Which of the following terms is the best match?
Float valve or ballcock
A. NSF-41
B. 20-patrons
C. Anti-siphon
D. Skating rinks - CORRECT ANSWER C. Anti-siphon
Which of the following terms is the best match?
Assembly (General)
A. NSF-41
B. 20-patrons
C. Anti-siphon
D. Skating rinks - CORRECT ANSWER D. Skating rinks
Which of the following terms is the best match?
Commercial food-waste grinders
A. NSF-41
B. 20-patrons
C. Anti-siphon
D. Skating rinks - CORRECT ANSWER B. 20-patrons
Which of the following terms is the best match?
QUESTIONS AND CORRECT ANSWERS
A "drinking fountain" is provided with a device defined as a _______ to provide an orifice
elevation to assist in protecting the water supply
A. Backflow preventer
B. Stream projector
C. Atmospheric vacuum breaker
D. Check valve - CORRECT ANSWER Stream projector
A plumber is installing a shower stall in the master bath of a residential dwelling. Stall is
round with an inside diameter of 32 inches
The shower compartment is...
A. Compliant with the code
B. Not code compliant
C. Product-accepted by the board
D. Equal to the area of a 30 x 30 shower base - CORRECT ANSWER Compliant with
the code
A plumber is completing the drainage waste and vent connections in a new restaurant. A
dishwasher with a pre-rinse tray, (3)-pot/scullery sinks, and several indirect wastes will be
installed in this commercial kitchen.
A commercial food waste grinder installed at the pre-rinse sink shall _______
A. Have a minimum 3 inch drain connection
B. Be connected and trapped separately from other fixtures or compartments
,C. Enter a grease interceptor/separator regulated by a flow control valve
D. Only connect to the drainage system using DWV-copper tubing - CORRECT
ANSWER B. Be connected and trapped separately from other fixtures or compartments
A journeyman plumber and apprentice are renovating the DWV and water connections in an
existing Catholic Church. A public sanitary sewer, storm sewer and drywell are provided to
receive the waste and other liquids generated in this facility.
The liquid discharge from a _______ shall be conducted separately and directly to a drywell
in the ground, and shall not be used for any other drainage purpose.
A. Flushing rim sink
B. Lavatory
C. Cuspidor
D. Sacrarium - CORRECT ANSWER D. Sacrarium
A team of plumbers are installing the water, waste and vent piping for a 5-story residential
apartment complex. There are commercial laundry rooms provided on the 2nd and 4th floors
of the complex.
The minimum trap and standpipe diameter for each commercial clothes washing machine
shall be no less than _______
A. 2 inches
B. 3 inches
C. 1.5 inches
D. 2.5 inches - CORRECT ANSWER A. 2 inches
A journeyman plumber and apprentice are installing the finish plumbing in men's and ladies
restrooms in a restaurant. Wall hung water closets, lavatories, and urinals are being installed
in the respective toilet facilities.
,True or False: When determining the number of plumbing fixtures after the population has
been established by the authority having jurisdiction, should a fraction occur, round down to
the next fixture. - CORRECT ANSWER False
A plumber is installing the water, waste and vent system in a laundry facility. (18)-Eighteen
clothes washing machines will be installed using "stand-pipes" as receptors
The (18)-stand-pipes shall connect to a drain of sufficient size to receive the simultaneous
discharge of _______ of the clothes washing machines connected thereto.
A. 13
B. 33%
C. 14
D. 50% - CORRECT ANSWER C. 14
Commercial dishwashing machines that discharge by gravity shall be ________ connected,
except when the machine is located above or within five feet of a trapped floor drain, the
waste may be connected directly to the inlet side of a properly vented floor drain trap. -
CORRECT ANSWER Indirectly
A plumber is installing a three-sided shower stall in a new residential dwelling. The base of
the shower stall is formed and shaped as a rectangle. One side of the shower base measures
4'-6" in length and the opposite side is 3-feet.
Shower compartments and stalls shall have at least ________ square inches of floor area and
be not less than ________-inches in minimum dimension measured from its finished interior
dimension as the side of a rectangle, altitude of a triangle or diameter of a circle or other
angular shape.
A. 1,200 (24)
B. 900 (30)
C. 1,000 (18)
D. 2,000 (24) - CORRECT ANSWER B. 900 (30)
, Which of the following terms is the best match?
Float valve or ballcock
A. NSF-41
B. 20-patrons
C. Anti-siphon
D. Skating rinks - CORRECT ANSWER C. Anti-siphon
Which of the following terms is the best match?
Assembly (General)
A. NSF-41
B. 20-patrons
C. Anti-siphon
D. Skating rinks - CORRECT ANSWER D. Skating rinks
Which of the following terms is the best match?
Commercial food-waste grinders
A. NSF-41
B. 20-patrons
C. Anti-siphon
D. Skating rinks - CORRECT ANSWER B. 20-patrons
Which of the following terms is the best match?
