Massachusetts Plumbers
Journeyman Exam 2026 Exam
All Answers and Illustrations
Given
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.
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 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
Waste and Vent shall be tested for? - ANSWER ✔✔until there is a
uniform gauge pressure of five P.S.I.G. or sufficient pressure to balance
Journeyman Exam 2026 Exam
All Answers and Illustrations
Given
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.
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 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
Waste and Vent shall be tested for? - ANSWER ✔✔until there is a
uniform gauge pressure of five P.S.I.G. or sufficient pressure to balance
