1|Page
RHODE ISLAND JOURNEYMAN/MASTER PLUMBER
EXAM NEWEST 2026/2027 ACTUAL EXAM COMPLETE
150 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW!!
Roof drains shall have strainers extending above the roof
a minimum of: - ANSWER-4"
Separate toilet facilities are not required when - ANSWER-
There are 15 or less employees
Minimum pitch for 2 1/2" piping and smaller is: -
ANSWER-1/4"
,2|Page
Minimum size wet vent piping is: - ANSWER-1 1/2"
What is the minimum supply tube to a one-piece toilet? -
ANSWER-1/2" OD
What is the line in the building that carries water from the
roof to the sewer called? - ANSWER-Conductor
What is the minimum size outlet for a shower in RI? -
ANSWER-1 1/2"
What is the minimum and maximum length of a waste
stack to a trap weir? - ANSWER-18" and 42"
,3|Page
What must be installed before connecting and irrigation
system to a potable water supply? - ANSWER-A pressure
reducing backflow preventer
Can combustible liquids that condense be allowed down
the public sewer? - ANSWER-Always follow the
manufacturers instructions
How should a grease trap be sized when hooking it up to a
commercial food waste grinder? - ANSWER-It should be
sized to the outlet of the food waste grinder
Water pipe should be buried ____________ feet
underground. - ANSWER-4.5' underground
, 4|Page
Water testing of a drainage system requires a: -
ANSWER-10' head
Sizing of storm drains for Rhode Island is based on: -
ANSWER-2.6 inches of rain per hour
The Board of Appeals consists of how many members? -
ANSWER-5
Tempered water is water having a temperature range of: -
ANSWER-85 degrees to 110 degrees
RHODE ISLAND JOURNEYMAN/MASTER PLUMBER
EXAM NEWEST 2026/2027 ACTUAL EXAM COMPLETE
150 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW!!
Roof drains shall have strainers extending above the roof
a minimum of: - ANSWER-4"
Separate toilet facilities are not required when - ANSWER-
There are 15 or less employees
Minimum pitch for 2 1/2" piping and smaller is: -
ANSWER-1/4"
,2|Page
Minimum size wet vent piping is: - ANSWER-1 1/2"
What is the minimum supply tube to a one-piece toilet? -
ANSWER-1/2" OD
What is the line in the building that carries water from the
roof to the sewer called? - ANSWER-Conductor
What is the minimum size outlet for a shower in RI? -
ANSWER-1 1/2"
What is the minimum and maximum length of a waste
stack to a trap weir? - ANSWER-18" and 42"
,3|Page
What must be installed before connecting and irrigation
system to a potable water supply? - ANSWER-A pressure
reducing backflow preventer
Can combustible liquids that condense be allowed down
the public sewer? - ANSWER-Always follow the
manufacturers instructions
How should a grease trap be sized when hooking it up to a
commercial food waste grinder? - ANSWER-It should be
sized to the outlet of the food waste grinder
Water pipe should be buried ____________ feet
underground. - ANSWER-4.5' underground
, 4|Page
Water testing of a drainage system requires a: -
ANSWER-10' head
Sizing of storm drains for Rhode Island is based on: -
ANSWER-2.6 inches of rain per hour
The Board of Appeals consists of how many members? -
ANSWER-5
Tempered water is water having a temperature range of: -
ANSWER-85 degrees to 110 degrees
