Comprehensive Plumbing Code and System Principles
for Certification Exam Newest 2026 Questions and
Correct Detailed Answers Already Graded A+
What is the depth of a trap seal? - CORRECT ANSWER-The depth of a trap seal
shall be between 1 inch and 3 inches.
What can grease traps receive discharge from? - CORRECT ANSWER-Grease
traps can receive the discharge of pre-rinse sinks.
What must building traps installed deeper than 4' have? - CORRECT ANSWER-
Building traps installed deeper than 4' must have a Wye/45 combo.
How far can basement water closets go from vented portion? - CORRECT
ANSWER-A basement water closet can go a maximum of 10 feet from the vented
portion.
Above ground fixture drains' vent shall be within? - CORRECT ANSWER-Above
ground fixture drains' vent shall be within 3 feet 6 inches.
, Where should intermediate relief vents be placed? - CORRECT ANSWER-
Intermediate relief vents shall be placed at the end of the battery.
What trap sizes can 4" FAI's be used on? - CORRECT ANSWER-4" FAI's can be
used on trap sizes of 4".
How long are plumbing licenses valid for? - CORRECT ANSWER-All plumbing
licenses shall be valid for 2 years.
How many years must a journeyman complete under a master before applying for
the master exam? - CORRECT ANSWER-A journeyman must complete 2 years
under a master.
Who shall request a final plumbing inspection? - CORRECT ANSWER-The
permittee shall request a final plumbing inspection.
Storm water drainage is based on what frequency storm? - CORRECT
ANSWER-Storm water drainage is based on a 100-year frequency storm.
Storm water disposal piping sizes are based on? - CORRECT ANSWER-Storm
water disposal piping sizes are based on DFU (Drainage Fixture Units).
for Certification Exam Newest 2026 Questions and
Correct Detailed Answers Already Graded A+
What is the depth of a trap seal? - CORRECT ANSWER-The depth of a trap seal
shall be between 1 inch and 3 inches.
What can grease traps receive discharge from? - CORRECT ANSWER-Grease
traps can receive the discharge of pre-rinse sinks.
What must building traps installed deeper than 4' have? - CORRECT ANSWER-
Building traps installed deeper than 4' must have a Wye/45 combo.
How far can basement water closets go from vented portion? - CORRECT
ANSWER-A basement water closet can go a maximum of 10 feet from the vented
portion.
Above ground fixture drains' vent shall be within? - CORRECT ANSWER-Above
ground fixture drains' vent shall be within 3 feet 6 inches.
, Where should intermediate relief vents be placed? - CORRECT ANSWER-
Intermediate relief vents shall be placed at the end of the battery.
What trap sizes can 4" FAI's be used on? - CORRECT ANSWER-4" FAI's can be
used on trap sizes of 4".
How long are plumbing licenses valid for? - CORRECT ANSWER-All plumbing
licenses shall be valid for 2 years.
How many years must a journeyman complete under a master before applying for
the master exam? - CORRECT ANSWER-A journeyman must complete 2 years
under a master.
Who shall request a final plumbing inspection? - CORRECT ANSWER-The
permittee shall request a final plumbing inspection.
Storm water drainage is based on what frequency storm? - CORRECT
ANSWER-Storm water drainage is based on a 100-year frequency storm.
Storm water disposal piping sizes are based on? - CORRECT ANSWER-Storm
water disposal piping sizes are based on DFU (Drainage Fixture Units).
