Alberta Plumber Apprenticeship Certification Exam
Year Two – Plumber Gasfitter Apprenticeship Level 2
Plumbing Systems Theory 2026-2027 Actual Exam
with Real 190 Questions and Verified Correct Answers
Already Graded A+ Guaranteed Success Brand New
Version!!
A DWV design must be able to maintain what 2 things? - CORRECT ANSWER: Trap seal.
Atmospheric pressure.
A hot water supply for a lavatory is on the ____ and the cold is on the ____. - CORRECT
ANSWER: Left, right.
A vertical pipe travelling through 4 stores. Each story is 8 feet high. What is the minimum
amount of supports required? - CORRECT ANSWER: 2 ABS pipe.
A wall mounted water closet bowl has a p-trap. How is the siphon achieved? - CORRECT
ANSWER: Blow out jet.
A washout urinal is not permitted to have a p-trap made from what? - CORRECT ANSWER:
Copper.
Can a dishwasher tie into a garburator? - CORRECT ANSWER: Yes.
Can a kitchen sink have a concealed overflow? - CORRECT ANSWER: No.
,Explain the reasoning behind why a normally closed backwater valve is not permitted to be
installed on a sanitary building drain? - CORRECT ANSWER: It doesn't allow sewer gas to vent
out of the stack.
How could the principles of galvanic corrosion be used to protect a hot water tank? - CORRECT
ANSWER: To connect dissimilar metals.
How does a tank water closet maintain its trap seal? - CORRECT ANSWER: Refill tube.
How does momentum affect a trap seal? - CORRECT ANSWER: It causes siphonage.
How far apart are the hot and cold openings for a standard two handled lavatory faucet? -
CORRECT ANSWER: 4"
How far from the top of a HWT could a T&P valve be installed on the piping? - CORRECT
ANSWER: 150mm
How is an under mount kitchen sink fastened to the counter top? - CORRECT ANSWER:
Manufactured supplied clips and silicone.
How long does an air pressure test have to hold for a DWV rough in test? - CORRECT
ANSWER: 15 minutes.
How long must an air test hold on a potable water system? - CORRECT ANSWER: 2 hours.
How many fixture units does a garburator and a dishwater impose on the DWV system if they
are installed on the fixture outlet of a kitchen sink? - CORRECT ANSWER: 0
How many hangers would be required for a 6.75-meter-long horizontal run of 1/2" hard temper
copper? - CORRECT ANSWER: 3
, How many PSI is 4 feet of water column? - CORRECT ANSWER: 4 divided by 2.31 = 1.73
How many total fixture units would a 5-Lpm lavatory faucet be if used for a single-family home?
- CORRECT ANSWER: 0.7
How much clean fill is required for piping? - CORRECT ANSWER: 300mm tampered.
How much kPa are exerted on a DWV system at 3 meters high? - CORRECT ANSWER:
2.98kPa 35kPa.
How much pressure is used when administering a final test? - CORRECT ANSWER: 1" W.C
How must the drain for a dishwasher connect to a kitchen sink fixture drain? - CORRECT
ANSWER: Before p-trap dishwasher wye run hose as high as possible.
How often should maintenance be done on sewer cleaning equipment? - CORRECT ANSWER:
After each use.
How would a faulty diverter knob on a tub spot be rectified? - CORRECT ANSWER: Change
plastic inside or spout.
How would a plumber know where to set the tank water level? - CORRECT ANSWER: Critical
level mark.
How would you install a shower head nipple without scratching the chrome? - CORRECT
ANSWER: Thread a fitting on the end.
If a building has DWV piping, what type of material must the flange be made from? -
CORRECT ANSWER: Brass.
Year Two – Plumber Gasfitter Apprenticeship Level 2
Plumbing Systems Theory 2026-2027 Actual Exam
with Real 190 Questions and Verified Correct Answers
Already Graded A+ Guaranteed Success Brand New
Version!!
A DWV design must be able to maintain what 2 things? - CORRECT ANSWER: Trap seal.
Atmospheric pressure.
A hot water supply for a lavatory is on the ____ and the cold is on the ____. - CORRECT
ANSWER: Left, right.
A vertical pipe travelling through 4 stores. Each story is 8 feet high. What is the minimum
amount of supports required? - CORRECT ANSWER: 2 ABS pipe.
A wall mounted water closet bowl has a p-trap. How is the siphon achieved? - CORRECT
ANSWER: Blow out jet.
A washout urinal is not permitted to have a p-trap made from what? - CORRECT ANSWER:
Copper.
Can a dishwasher tie into a garburator? - CORRECT ANSWER: Yes.
Can a kitchen sink have a concealed overflow? - CORRECT ANSWER: No.
,Explain the reasoning behind why a normally closed backwater valve is not permitted to be
installed on a sanitary building drain? - CORRECT ANSWER: It doesn't allow sewer gas to vent
out of the stack.
How could the principles of galvanic corrosion be used to protect a hot water tank? - CORRECT
ANSWER: To connect dissimilar metals.
How does a tank water closet maintain its trap seal? - CORRECT ANSWER: Refill tube.
How does momentum affect a trap seal? - CORRECT ANSWER: It causes siphonage.
How far apart are the hot and cold openings for a standard two handled lavatory faucet? -
CORRECT ANSWER: 4"
How far from the top of a HWT could a T&P valve be installed on the piping? - CORRECT
ANSWER: 150mm
How is an under mount kitchen sink fastened to the counter top? - CORRECT ANSWER:
Manufactured supplied clips and silicone.
How long does an air pressure test have to hold for a DWV rough in test? - CORRECT
ANSWER: 15 minutes.
How long must an air test hold on a potable water system? - CORRECT ANSWER: 2 hours.
How many fixture units does a garburator and a dishwater impose on the DWV system if they
are installed on the fixture outlet of a kitchen sink? - CORRECT ANSWER: 0
How many hangers would be required for a 6.75-meter-long horizontal run of 1/2" hard temper
copper? - CORRECT ANSWER: 3
, How many PSI is 4 feet of water column? - CORRECT ANSWER: 4 divided by 2.31 = 1.73
How many total fixture units would a 5-Lpm lavatory faucet be if used for a single-family home?
- CORRECT ANSWER: 0.7
How much clean fill is required for piping? - CORRECT ANSWER: 300mm tampered.
How much kPa are exerted on a DWV system at 3 meters high? - CORRECT ANSWER:
2.98kPa 35kPa.
How much pressure is used when administering a final test? - CORRECT ANSWER: 1" W.C
How must the drain for a dishwasher connect to a kitchen sink fixture drain? - CORRECT
ANSWER: Before p-trap dishwasher wye run hose as high as possible.
How often should maintenance be done on sewer cleaning equipment? - CORRECT ANSWER:
After each use.
How would a faulty diverter knob on a tub spot be rectified? - CORRECT ANSWER: Change
plastic inside or spout.
How would a plumber know where to set the tank water level? - CORRECT ANSWER: Critical
level mark.
How would you install a shower head nipple without scratching the chrome? - CORRECT
ANSWER: Thread a fitting on the end.
If a building has DWV piping, what type of material must the flange be made from? -
CORRECT ANSWER: Brass.
