Georgia Master Plumber Examination
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1. Which organization is primarily responsible for licensing master
plumbers in Georgia?
A. Georgia Department of Transportation
B. Georgia Environmental Protection Division
C. Georgia Construction Industry Licensing Board
D. Georgia Department of Revenue
Rationale: Plumbing contractor licensing in Georgia is administered
through the Georgia Construction Industry Licensing Board and its
relevant division. A master plumber license establishes the
qualifications required to perform or supervise plumbing work within
the scope permitted by Georgia law.
,2. Which plumbing code is generally used as the primary model code
for plumbing installations in Georgia?
A. International Residential Code only
B. Uniform Mechanical Code
C. International Plumbing Code
D. National Electrical Code
Rationale: Georgia adopts versions of the International Plumbing
Code as part of its state minimum standard construction codes. The
applicable edition and Georgia amendments must be considered when
performing regulated plumbing work.
3. What is the primary purpose of a plumbing trap?
A. Increase water pressure
B. Prevent pipe corrosion
C. Prevent sewer gases from entering a building
D. Increase drainage velocity
Rationale: A properly installed trap retains a water seal that
separates the building drainage system from occupied spaces. This
water seal helps prevent sewer gases and odors from entering the
building.
,4. Which fixture normally requires a trap?
A. Water heater
B. Hose bibb supply line
C. Lavatory
D. Water service entrance
Rationale: Plumbing fixtures that discharge into the drainage system
generally require an approved trap unless specifically exempted. A
lavatory is a typical trapped fixture.
5. What is the primary function of a plumbing vent?
A. Increase water pressure
B. Supply hot water
C. Protect trap seals and allow proper drainage-system airflow
D. Filter wastewater
Rationale: The vent system allows air to enter and leave the drainage
system, helping equalize pressure and protect fixture trap seals.
Proper venting also promotes reliable drainage flow.
, 6. A plumbing drainage system that is improperly vented may cause
which problem?
A. Excessive water-heater temperature
B. Increased electrical voltage
C. Trap siphonage
D. Increased water hardness
Rationale: Improper venting can create negative pressure as
wastewater flows through piping. That pressure can siphon water
from a fixture trap, eliminating the protective water seal.
7. Which fitting is generally appropriate for changing the direction of a
drainage pipe?
A. Straight coupling
B. Reducing bushing
C. Drainage-pattern elbow
D. Pipe union
Rationale: Drainage fittings are designed to maintain smooth
wastewater flow and reduce turbulence and obstruction. Drainage-
pattern elbows are manufactured specifically for this purpose.
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1. Which organization is primarily responsible for licensing master
plumbers in Georgia?
A. Georgia Department of Transportation
B. Georgia Environmental Protection Division
C. Georgia Construction Industry Licensing Board
D. Georgia Department of Revenue
Rationale: Plumbing contractor licensing in Georgia is administered
through the Georgia Construction Industry Licensing Board and its
relevant division. A master plumber license establishes the
qualifications required to perform or supervise plumbing work within
the scope permitted by Georgia law.
,2. Which plumbing code is generally used as the primary model code
for plumbing installations in Georgia?
A. International Residential Code only
B. Uniform Mechanical Code
C. International Plumbing Code
D. National Electrical Code
Rationale: Georgia adopts versions of the International Plumbing
Code as part of its state minimum standard construction codes. The
applicable edition and Georgia amendments must be considered when
performing regulated plumbing work.
3. What is the primary purpose of a plumbing trap?
A. Increase water pressure
B. Prevent pipe corrosion
C. Prevent sewer gases from entering a building
D. Increase drainage velocity
Rationale: A properly installed trap retains a water seal that
separates the building drainage system from occupied spaces. This
water seal helps prevent sewer gases and odors from entering the
building.
,4. Which fixture normally requires a trap?
A. Water heater
B. Hose bibb supply line
C. Lavatory
D. Water service entrance
Rationale: Plumbing fixtures that discharge into the drainage system
generally require an approved trap unless specifically exempted. A
lavatory is a typical trapped fixture.
5. What is the primary function of a plumbing vent?
A. Increase water pressure
B. Supply hot water
C. Protect trap seals and allow proper drainage-system airflow
D. Filter wastewater
Rationale: The vent system allows air to enter and leave the drainage
system, helping equalize pressure and protect fixture trap seals.
Proper venting also promotes reliable drainage flow.
, 6. A plumbing drainage system that is improperly vented may cause
which problem?
A. Excessive water-heater temperature
B. Increased electrical voltage
C. Trap siphonage
D. Increased water hardness
Rationale: Improper venting can create negative pressure as
wastewater flows through piping. That pressure can siphon water
from a fixture trap, eliminating the protective water seal.
7. Which fitting is generally appropriate for changing the direction of a
drainage pipe?
A. Straight coupling
B. Reducing bushing
C. Drainage-pattern elbow
D. Pipe union
Rationale: Drainage fittings are designed to maintain smooth
wastewater flow and reduce turbulence and obstruction. Drainage-
pattern elbows are manufactured specifically for this purpose.
