Massachusetts Plumbers Journeyman
Exam 2025/2026 Exam Questions and
Correct Answers | New Update
Existing Work - 🧠 ANSWER ✔✔A plumbing system or any part thereof
installed prior to March 11, 2005.
Soil Pipe - 🧠 ANSWER ✔✔Any pipe that conveys the discharge of toilets,
urinals or fixtures having similar functions to the building drain or building
sewer. The discharge may be conveyed with or without the discharge from
other fixtures
,Water Distribution Pipe - 🧠 ANSWER ✔✔A pipe within the building or on
the premises that conveys water from the water service pipe to the point of
usage
Barometric Loop. - 🧠 ANSWER ✔✔A vertical loop of pipe, rising to a height
sufficient to prevent back-siphonage from occurring in the potable water
supply pipe. (Approximately 35 feet, depending on the weight of the
atmosphere.)
Developed Length - 🧠 ANSWER ✔✔The length of a pipeline as measured
along the center line of the pipe or fittings.
Roughing-in. - 🧠 ANSWER ✔✔The installation of all parts of the plumbing
system that can be completed prior to the installation of fixtures. This
includes drainage piping, water supply piping, vent piping, the necessary
fixture supports, and any fixtures that are built into the building.
Trap Seal - 🧠 ANSWER ✔✔The vertical distance between the crown weir
and the top of the dip of the trap.
Air Gap (Drainage System). - 🧠 ANSWER ✔✔The unobstructed vertical
distance through the free atmosphere between the outlet of a waste pipe
and the flood level rim of the receptacle into which the waste discharges.
,Air
Fixture Unit. - 🧠 ANSWER ✔✔A unit of liquid flow used in sizing both supply
and drainage pipes. It is equal to 1 cubic foot per minute or approximately
7.5 gallons per minute.
Liquid Waste - 🧠 ANSWER ✔✔Discharge from any fixture, appliance, area
or appurtenance that does not contain human or animal waste matter
suspended in a solution.
Vacuum - 🧠 ANSWER ✔✔Any pressure less than that exerted by the
atmosphere
Branch Interval - 🧠 ANSWER ✔✔A distance along a soil or waste stack
corresponding in general to a story height, but not less than eight feet in
vertical height, and wherein the horizontal branches from one floor or story
of a building are connected to the stack
Testing water supply shall be at a pressure no less than? - 🧠 ANSWER
✔✔125 PSI
Storm or Sanitary drains shall be installed at a slope that: - 🧠 ANSWER
✔✔a slope that produces a computed velocity of discharge of not less than
two feet per second.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
, Horizontal drainage piping which is (3) three inches in diameter or smaller
shall be installed with a minimum uniform pitch - 🧠 ANSWER ✔✔¼ inch per
foot
Horizontal drainage piping which is larger than three inches in diameter
shall be installed with a minimum uniform pitch of - 🧠 ANSWER ✔✔1/8 inch
per foot
Special Labs. All licensed plumbers and plumbing apprentices installing
pipe connections or working on drains to hospital waste and vent systems,
mortuary waste and vent systems, laboratory waste and vent systems,
dental waste and vent systems and plumbing systems in radioactive
sensitive areas - 🧠 ANSWER ✔✔shall have the surface of their body and
clothing protected by disposable or washable gowns similar or equal to the
gowns, gloves and face masks worn by surgical staff.
Whenever there is reason to believe that the plumbing system of any
building has become defective, it shall be subjected - 🧠 ANSWER ✔✔test
and/or inspection, and any defects found shall be corrected as required in
writing by the Inspector
Exam 2025/2026 Exam Questions and
Correct Answers | New Update
Existing Work - 🧠 ANSWER ✔✔A plumbing system or any part thereof
installed prior to March 11, 2005.
Soil Pipe - 🧠 ANSWER ✔✔Any pipe that conveys the discharge of toilets,
urinals or fixtures having similar functions to the building drain or building
sewer. The discharge may be conveyed with or without the discharge from
other fixtures
,Water Distribution Pipe - 🧠 ANSWER ✔✔A pipe within the building or on
the premises that conveys water from the water service pipe to the point of
usage
Barometric Loop. - 🧠 ANSWER ✔✔A vertical loop of pipe, rising to a height
sufficient to prevent back-siphonage from occurring in the potable water
supply pipe. (Approximately 35 feet, depending on the weight of the
atmosphere.)
Developed Length - 🧠 ANSWER ✔✔The length of a pipeline as measured
along the center line of the pipe or fittings.
Roughing-in. - 🧠 ANSWER ✔✔The installation of all parts of the plumbing
system that can be completed prior to the installation of fixtures. This
includes drainage piping, water supply piping, vent piping, the necessary
fixture supports, and any fixtures that are built into the building.
Trap Seal - 🧠 ANSWER ✔✔The vertical distance between the crown weir
and the top of the dip of the trap.
Air Gap (Drainage System). - 🧠 ANSWER ✔✔The unobstructed vertical
distance through the free atmosphere between the outlet of a waste pipe
and the flood level rim of the receptacle into which the waste discharges.
,Air
Fixture Unit. - 🧠 ANSWER ✔✔A unit of liquid flow used in sizing both supply
and drainage pipes. It is equal to 1 cubic foot per minute or approximately
7.5 gallons per minute.
Liquid Waste - 🧠 ANSWER ✔✔Discharge from any fixture, appliance, area
or appurtenance that does not contain human or animal waste matter
suspended in a solution.
Vacuum - 🧠 ANSWER ✔✔Any pressure less than that exerted by the
atmosphere
Branch Interval - 🧠 ANSWER ✔✔A distance along a soil or waste stack
corresponding in general to a story height, but not less than eight feet in
vertical height, and wherein the horizontal branches from one floor or story
of a building are connected to the stack
Testing water supply shall be at a pressure no less than? - 🧠 ANSWER
✔✔125 PSI
Storm or Sanitary drains shall be installed at a slope that: - 🧠 ANSWER
✔✔a slope that produces a computed velocity of discharge of not less than
two feet per second.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
, Horizontal drainage piping which is (3) three inches in diameter or smaller
shall be installed with a minimum uniform pitch - 🧠 ANSWER ✔✔¼ inch per
foot
Horizontal drainage piping which is larger than three inches in diameter
shall be installed with a minimum uniform pitch of - 🧠 ANSWER ✔✔1/8 inch
per foot
Special Labs. All licensed plumbers and plumbing apprentices installing
pipe connections or working on drains to hospital waste and vent systems,
mortuary waste and vent systems, laboratory waste and vent systems,
dental waste and vent systems and plumbing systems in radioactive
sensitive areas - 🧠 ANSWER ✔✔shall have the surface of their body and
clothing protected by disposable or washable gowns similar or equal to the
gowns, gloves and face masks worn by surgical staff.
Whenever there is reason to believe that the plumbing system of any
building has become defective, it shall be subjected - 🧠 ANSWER ✔✔test
and/or inspection, and any defects found shall be corrected as required in
writing by the Inspector
