JOURNEYMAN AND MASTER
PLUMBING EXAM QUESTION BANK
CORRECT 100%
What degree is used for isometric drawings? - ANSWER60 degrees
What is the recommended minimum of minutes for chlorine water management? -
ANSWER20-30 minutes
When you need to repair a single handle lavatory faucet, what needs to be replaced? -
ANSWERO ring
Galvanic corrosion of water supply piping can occur where - ANSWERsteel pipe is
joined to a dissimilar metal pipe
Whenever necessary to make an inspection to enforce any of the provisions of the
Code, an authorized representative may enter the premises - ANSWERat all reasonable
times
After completion of work and testing of sewer pipeline, who shall request inspection? -
ANSWERSupervisor of job at job-site
If the Administrative Authority requests that a new type of material be used on a project,
who pays for the testing of the new material? - ANSWERContractor
When plumbing work is inspected and a "notice of correction" is served, how many days
does the contractor have to correct the work? - ANSWERWithin 10 days
What is the vertical distance called that is between the lowest opening of a pipe fixture
or appurtenance that is discharging waste to the overflow level of a fixture? -
ANSWERAirgap, drainage
A cleanout which has direct access without the necessity of removing any panel or door
is defined to be - ANSWERreadily accessible
Distribution of water from any other source than intended is - ANSWERbackflow
Back-siphonage is defined as - ANSWERthe flowing back of used, contaminated or
polluted water from a plumbing fixture or vessel into a water supply pipe due to a
negative pressure in such pipe
The _________________________ is the pipe which carries potable water from a water
meter to a building. - ANSWERbuilding supply
,Backflow is defined as - ANSWERnon-potable water or other liquids entering a potable
water system
Any group of two or more similar adjacent fixtures that discharge into a common
horizontal waste branch is defined as a - ANSWERbattery
Which of the following connects one or more individual vents to a vent stack? -
ANSWERBranch vent
A combination waste and vent system may be installed on a
_______________________ piping system. - ANSWERhorizontal
The minimum level at which a vacuum breaker may be installed above the flood level
rim of the device and service is called - ANSWERthe critical level
The "the critical level" is shown on a backflow prevention device by a
_______________ marking. - ANSWERC-L or C/L
When a backflow prevention device does not bear a "critical level" marking, which part
of the device constitutes the critical level? - ANSWERBottom
What is the Critical Level on a backflow device? - ANSWERBottom
According to the Uniform Plumbing Code, a "cross connection" is defined as -
ANSWERa connection through which non-potable water may enter a potable water
system.
What is the name for the measurement taken along the centerline of a pipe and fittings?
- ANSWERDeveloped length
"Existing work" is defined to be a plumbing system or any part thereof which -
ANSWERhas been installed prior to the effective date of the code.
A pipe which makes an angle of not more than 45 degrees with the horizontal is
considered - ANSWERhorizontal
A horizontal pipe is any pipe or fitting which is installed in a horizontal position or which
makes an angle of less than _________ degrees with the horizontal. - ANSWER45
What statement is true about industrial waste? - ANSWERIt is free of fecal matter.
The "invert" elevation of a sewer line is the ____________________ of the pipe. -
ANSWERinside bottom
, Water which is satisfactory for drinking, culinary and domestic purposes and meets the
requirements of the health authority having jurisdiction is defined as
_____________________ water. - ANSWERpotable
Refer to the same illustration. The pipe in the figure runs parallel to the foundation of the
building. "A" is the minimum angle required by Code. Distance "C" is 3 ft. What
minimum distance is required at "B"? - ANSWER3 feet
Refer to the illustration above. The bottom of the footing is a maximum of 45 degrees
from the pipe trench bottom. If the bottom of the footing is 18 inches deep and the pipe
trench is 24 inches deep, what is the minimum horizontal distance between pipe branch
and the footing? - ANSWER2 feet
When a pipe passes through a cinder wall, concrete wall or masonry wall, the pipe
needs to be - ANSWERsleeved
Refer to the table at the end of this exam. Cast iron soil pipe shall be supported at not
more than ______________________ foot intervals. - ANSWER5
Where joints occur, pipe lengths less than 5' shall be supported at - ANSWERnot more
than 5 foot intervals
Vertical copper tubing shall be supported at each story or at maximum intervals of
____________ feet. - ANSWER10 (or at each floor)
Hangers, supports, and anchors should be made of - ANSWERsufficient strength and
quality to support the weight of the pipe and its contents.
What type of fill is an approved fill? - ANSWERClean earth free of rocks and debris
The minimum wall thickness for threaded plastic PVC pipe shall be - ANSWERschedule
80
Weh connecting galvanized pipe to copper pipe, what type of fittings should be used? -
ANSWERbrass adapter
What maximum distance is allowed between hangars supporting horizontal 3/4 " copper
tubing? - ANSWER6 feet
A prefabricated gas riser inserted with plastic pipe, shall be wrapped to a point at least a
minimum of _________ inches. - ANSWER6
During the final inspection on threaded gas piping, the piping shall stand an applied air
pressure of not less than _____________ pounds per square inch (psi) for not less than
15 minutes. - ANSWER10
PLUMBING EXAM QUESTION BANK
CORRECT 100%
What degree is used for isometric drawings? - ANSWER60 degrees
What is the recommended minimum of minutes for chlorine water management? -
ANSWER20-30 minutes
When you need to repair a single handle lavatory faucet, what needs to be replaced? -
ANSWERO ring
Galvanic corrosion of water supply piping can occur where - ANSWERsteel pipe is
joined to a dissimilar metal pipe
Whenever necessary to make an inspection to enforce any of the provisions of the
Code, an authorized representative may enter the premises - ANSWERat all reasonable
times
After completion of work and testing of sewer pipeline, who shall request inspection? -
ANSWERSupervisor of job at job-site
If the Administrative Authority requests that a new type of material be used on a project,
who pays for the testing of the new material? - ANSWERContractor
When plumbing work is inspected and a "notice of correction" is served, how many days
does the contractor have to correct the work? - ANSWERWithin 10 days
What is the vertical distance called that is between the lowest opening of a pipe fixture
or appurtenance that is discharging waste to the overflow level of a fixture? -
ANSWERAirgap, drainage
A cleanout which has direct access without the necessity of removing any panel or door
is defined to be - ANSWERreadily accessible
Distribution of water from any other source than intended is - ANSWERbackflow
Back-siphonage is defined as - ANSWERthe flowing back of used, contaminated or
polluted water from a plumbing fixture or vessel into a water supply pipe due to a
negative pressure in such pipe
The _________________________ is the pipe which carries potable water from a water
meter to a building. - ANSWERbuilding supply
,Backflow is defined as - ANSWERnon-potable water or other liquids entering a potable
water system
Any group of two or more similar adjacent fixtures that discharge into a common
horizontal waste branch is defined as a - ANSWERbattery
Which of the following connects one or more individual vents to a vent stack? -
ANSWERBranch vent
A combination waste and vent system may be installed on a
_______________________ piping system. - ANSWERhorizontal
The minimum level at which a vacuum breaker may be installed above the flood level
rim of the device and service is called - ANSWERthe critical level
The "the critical level" is shown on a backflow prevention device by a
_______________ marking. - ANSWERC-L or C/L
When a backflow prevention device does not bear a "critical level" marking, which part
of the device constitutes the critical level? - ANSWERBottom
What is the Critical Level on a backflow device? - ANSWERBottom
According to the Uniform Plumbing Code, a "cross connection" is defined as -
ANSWERa connection through which non-potable water may enter a potable water
system.
What is the name for the measurement taken along the centerline of a pipe and fittings?
- ANSWERDeveloped length
"Existing work" is defined to be a plumbing system or any part thereof which -
ANSWERhas been installed prior to the effective date of the code.
A pipe which makes an angle of not more than 45 degrees with the horizontal is
considered - ANSWERhorizontal
A horizontal pipe is any pipe or fitting which is installed in a horizontal position or which
makes an angle of less than _________ degrees with the horizontal. - ANSWER45
What statement is true about industrial waste? - ANSWERIt is free of fecal matter.
The "invert" elevation of a sewer line is the ____________________ of the pipe. -
ANSWERinside bottom
, Water which is satisfactory for drinking, culinary and domestic purposes and meets the
requirements of the health authority having jurisdiction is defined as
_____________________ water. - ANSWERpotable
Refer to the same illustration. The pipe in the figure runs parallel to the foundation of the
building. "A" is the minimum angle required by Code. Distance "C" is 3 ft. What
minimum distance is required at "B"? - ANSWER3 feet
Refer to the illustration above. The bottom of the footing is a maximum of 45 degrees
from the pipe trench bottom. If the bottom of the footing is 18 inches deep and the pipe
trench is 24 inches deep, what is the minimum horizontal distance between pipe branch
and the footing? - ANSWER2 feet
When a pipe passes through a cinder wall, concrete wall or masonry wall, the pipe
needs to be - ANSWERsleeved
Refer to the table at the end of this exam. Cast iron soil pipe shall be supported at not
more than ______________________ foot intervals. - ANSWER5
Where joints occur, pipe lengths less than 5' shall be supported at - ANSWERnot more
than 5 foot intervals
Vertical copper tubing shall be supported at each story or at maximum intervals of
____________ feet. - ANSWER10 (or at each floor)
Hangers, supports, and anchors should be made of - ANSWERsufficient strength and
quality to support the weight of the pipe and its contents.
What type of fill is an approved fill? - ANSWERClean earth free of rocks and debris
The minimum wall thickness for threaded plastic PVC pipe shall be - ANSWERschedule
80
Weh connecting galvanized pipe to copper pipe, what type of fittings should be used? -
ANSWERbrass adapter
What maximum distance is allowed between hangars supporting horizontal 3/4 " copper
tubing? - ANSWER6 feet
A prefabricated gas riser inserted with plastic pipe, shall be wrapped to a point at least a
minimum of _________ inches. - ANSWER6
During the final inspection on threaded gas piping, the piping shall stand an applied air
pressure of not less than _____________ pounds per square inch (psi) for not less than
15 minutes. - ANSWER10
