PLUMBING RED SEAL QUESTIONS AND
ANSWERS 2026
Trap arms and fixture drains are to be installed with roughly _____ of an inch
downward slope for every foot of trap arm length - ANSWERS1/4" per foot less than 3" -
1/8" per foot 4" and higher
What can put a great deal of stress on your neck, shoulders, back, and legs when lifting
heavy objects? - ANSWERSnot bending at your knees and keeping your back straight
The Propane Storage and Handling Code is ______________. - ANSWERSB149.2-00
The wires of a thermostat are wired to terminals - ANSWERSR,W,G
The ideal location for a circulator pump installed in a hot water heating system is -
ANSWERSon the supply after the expansion tank
A toilet seat used in a public washroom must be - ANSWERSelongated open front type
The most common physical characteristics used to measure the quality of water are:
temperature, taste, colour, _________ and odour - ANSWERSturbidity
When using grooved pipe from one manufacturer, the fittings from another manufacturer
may be used. - ANSWERSFalse
A settlement loop is installed in water distribution lines that are ______ inches or less -
ANSWERS2
Which of the following must the base of every soil or waste stack contain -
ANSWERScleanout and expansion joint
An oil interceptor would most likely be found in a/an: - ANSWERSdry cleaning plant.
A water purveyor has the primary responsibility of: - ANSWERSproviding the public with
a safe and potable water supply.
A one inch water service to a building may have a _____ valve as the shut-off valve for
the building. - ANSWERSstop-and-drain
An air conditioner that discharges 0.05 L/s of condensate into a floor drain, would
equate to how many fixture units? - ANSWERS2
, After the inspection of a hot water heating system shows that the system pressure is in
excess of the designed operating pressure. Which device will cause this problem? -
ANSWERSWater-feed valve.
The state in which matter exists can be influence by these two factors: -
ANSWERStemperature and pressure
If the zone valve drive motor fails to operate the plumber must: - ANSWERSreplace the
defective motor.
A 120 Volt hot surface igniter can reach temperatures up to ____F - ANSWERS2600
Which of the following best describes an electric water heater? - ANSWERSone with an
immersion type element
A trap arm that does not use siphonic action may change direction in a horizontal plane
by up to ____ degrees between the fixture and the vent fitting - ANSWERS135
The suction pipe from the well to the house should be installed at a/an _______ slope -
ANSWERSupward
The maximum filling density of any propane container must never exceed ____% of the
water capacity stamped on the container - ANSWERS42
1. When installing a private water supply system, a qualified __________ should
complete all wiring terminations - ANSWERSelectrician
If a wood range is to be converted to a gas range certain adjustments must be made.
One major adjustment is the: - ANSWERSreplacement of manual dampers with
barometric dampers
When an eye is properly formed in a wire rope with the use of a thimble, the eye will
have approximately ______ percent - ANSWERS80
A fixture drain of the individual fixture that is not piped through one complete storey is
referred to as a: - ANSWERSfixture drain.
Fixtures that are not part of a wet vent group may connect to the wet vent branch and
the hydraulic load going into the vent does not have to be included in the wet vent -
ANSWERSFalse
When calculating the fixture unit load of a residence a two inch main floor drain is
considered to be ____ fixture units. - ANSWERS2
The common name for sodium carbonate is _________. - ANSWERSsoda ash
ANSWERS 2026
Trap arms and fixture drains are to be installed with roughly _____ of an inch
downward slope for every foot of trap arm length - ANSWERS1/4" per foot less than 3" -
1/8" per foot 4" and higher
What can put a great deal of stress on your neck, shoulders, back, and legs when lifting
heavy objects? - ANSWERSnot bending at your knees and keeping your back straight
The Propane Storage and Handling Code is ______________. - ANSWERSB149.2-00
The wires of a thermostat are wired to terminals - ANSWERSR,W,G
The ideal location for a circulator pump installed in a hot water heating system is -
ANSWERSon the supply after the expansion tank
A toilet seat used in a public washroom must be - ANSWERSelongated open front type
The most common physical characteristics used to measure the quality of water are:
temperature, taste, colour, _________ and odour - ANSWERSturbidity
When using grooved pipe from one manufacturer, the fittings from another manufacturer
may be used. - ANSWERSFalse
A settlement loop is installed in water distribution lines that are ______ inches or less -
ANSWERS2
Which of the following must the base of every soil or waste stack contain -
ANSWERScleanout and expansion joint
An oil interceptor would most likely be found in a/an: - ANSWERSdry cleaning plant.
A water purveyor has the primary responsibility of: - ANSWERSproviding the public with
a safe and potable water supply.
A one inch water service to a building may have a _____ valve as the shut-off valve for
the building. - ANSWERSstop-and-drain
An air conditioner that discharges 0.05 L/s of condensate into a floor drain, would
equate to how many fixture units? - ANSWERS2
, After the inspection of a hot water heating system shows that the system pressure is in
excess of the designed operating pressure. Which device will cause this problem? -
ANSWERSWater-feed valve.
The state in which matter exists can be influence by these two factors: -
ANSWERStemperature and pressure
If the zone valve drive motor fails to operate the plumber must: - ANSWERSreplace the
defective motor.
A 120 Volt hot surface igniter can reach temperatures up to ____F - ANSWERS2600
Which of the following best describes an electric water heater? - ANSWERSone with an
immersion type element
A trap arm that does not use siphonic action may change direction in a horizontal plane
by up to ____ degrees between the fixture and the vent fitting - ANSWERS135
The suction pipe from the well to the house should be installed at a/an _______ slope -
ANSWERSupward
The maximum filling density of any propane container must never exceed ____% of the
water capacity stamped on the container - ANSWERS42
1. When installing a private water supply system, a qualified __________ should
complete all wiring terminations - ANSWERSelectrician
If a wood range is to be converted to a gas range certain adjustments must be made.
One major adjustment is the: - ANSWERSreplacement of manual dampers with
barometric dampers
When an eye is properly formed in a wire rope with the use of a thimble, the eye will
have approximately ______ percent - ANSWERS80
A fixture drain of the individual fixture that is not piped through one complete storey is
referred to as a: - ANSWERSfixture drain.
Fixtures that are not part of a wet vent group may connect to the wet vent branch and
the hydraulic load going into the vent does not have to be included in the wet vent -
ANSWERSFalse
When calculating the fixture unit load of a residence a two inch main floor drain is
considered to be ____ fixture units. - ANSWERS2
The common name for sodium carbonate is _________. - ANSWERSsoda ash
