Massachusetts Plumbers
Journeyman Exam 2025-2026
Questions with Correct Detailed
Answers || Already Graded A+
<Latest Version>
1. 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
2. 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.
3. Liquid Waste - ANSWER ✔ Discharge from any fixture, appliance, area or
appurtenance that does not contain human or animal waste matter suspended
in a solution.
4. Vacuum - ANSWER ✔ Any pressure less than that exerted by the
atmosphere
5. 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
,6. Testing water supply shall be at a pressure no less than? - ANSWER ✔ 125
PSI
7. 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.
8. 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
9. 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
10.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.
11.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
12.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 a column of
mercury ten inches in height. This pressure shall be held without
introduction of additional air for a period of at least 15 minutes. The gauge
used for this test shall be calibrated in increments no greater than 1/10 of a
pound. c
13.Upon completion of a section or of the entire water supply system when
roughed, it shall be tested and proved tight under a pressure not less than -
ANSWER ✔ 125 pounds per square inch
,14.Upon notice of a request for an Inspection of the rough plumbing, the
Inspector shall make the Inspection within - ANSWER ✔ two working days
after receipt of such notice
15.Two acceptable tests for Drain and Waste - ANSWER ✔ Peppermint Test
and Air Test
16.Quarter bends, or their equivalent may be used in soil and waste lines when
the change in the direction of the flow is from the - ANSWER ✔ horizontal
to the vertical.
17.Short sweep fittings may be used in a branch waste line when the waste line
serves only - ANSWER ✔ one outlet and cleanouts are provided.
18.List 3 Prohibited Fittings - ANSWER ✔ -No fitting that incorporates a
straight T branch shall be used as a drainage fitting.
- No running threads, bands or saddles shall be used in a drainage
system.
-A fitting commonly referred to as a "Sisson Joint" is prohibited
19.A dead end may be used to? - ANSWER ✔ Extend the cleanout.
20.Where trenches are excavated below grade such that the bottom of the trench
does not form the bed for the pipe, the trench shall be? - ANSWER ✔ back-
filled to grade with sand tamped in place so as to provide a uniform bearing
surface for the pipe between joints.
21.Where rock is encountered in trenching, The rock shall be removed to a
point - ANSWER ✔ at least three inches below the grade line of the trench
and the trench shall be backfilled to grade with sand tamped in place so as to
provide a uniform bearing for the pipe between joints; and b. care shall be
exercised to ensure that no portion of the pipe, including its joints, rests on
any portion of a rock
22.Expansion joints shall be provided - ANSWER ✔ at every other branch
interval up to and including ten stories in height.
, 23.The expansion fitting shall be installed in a - ANSWER ✔ accessible
location in horizontal runs exceeding 20 feet in length.
24.The piping that penetrates concrete floors slabs or concrete walls shall be
provided with sleeves. Maintain an annular space of - ANSWER ✔ one-inch
between the pipe and sleeve.
25.Piping Trench Installations.Using sand or other fine granular material,
compact and backfill around the pipe to a point at least - ANSWER ✔ six-
inches over the crown of the pipe.
26.nstallation Through Fire-walls or Rated Fire Separation Walls. a. When
piping passes through a rated fire separation wall or enclosure to another
dwelling unit or space, the pipe shall be encased or shielded by a metal
sleeve extended - ANSWER ✔ 20 inches on each side of the wall, floor or
ceiling. The metal sleeve shall be 18 gauge
27.Installation. ABS-DWV pipe - ANSWER ✔ Expansion joints are not
required
28.Urinal Wastes. Urinal waste branches and urinal fixture wastes shall
conform to the following: 1 - ANSWER ✔ They shall be made of: a. extra
heavy or service weight cast iron soil pipe and fittings with caulked joints
b. threaded cast iron pipe with cast iron drainage fittings; or
c. iron size copper or brass pipe with cast brass drainage fittings.
29.sumps and Tanks for Sewage. All sumps and tanks for receiving sewage
removed by mechanical or ejector methods, shall be constructed as follows:
- ANSWER ✔ 1. Concrete. Three-inch minimum wall.
2. Cast Iron. Minimum ¼ inch thickness.
3. Steel.
a. Minimum 3/8" inch thickness for above ground. b. For below
ground installation the sump or tank shall be encased in
concrete having a thickness of at least three-inches
30.Vacuum Drainage System. - ANSWER ✔ piping arrangements and vacuum
pumps that are designed and installed in compliance with the manufacturer's
recommendations
Journeyman Exam 2025-2026
Questions with Correct Detailed
Answers || Already Graded A+
<Latest Version>
1. 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
2. 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.
3. Liquid Waste - ANSWER ✔ Discharge from any fixture, appliance, area or
appurtenance that does not contain human or animal waste matter suspended
in a solution.
4. Vacuum - ANSWER ✔ Any pressure less than that exerted by the
atmosphere
5. 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
,6. Testing water supply shall be at a pressure no less than? - ANSWER ✔ 125
PSI
7. 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.
8. 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
9. 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
10.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.
11.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
12.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 a column of
mercury ten inches in height. This pressure shall be held without
introduction of additional air for a period of at least 15 minutes. The gauge
used for this test shall be calibrated in increments no greater than 1/10 of a
pound. c
13.Upon completion of a section or of the entire water supply system when
roughed, it shall be tested and proved tight under a pressure not less than -
ANSWER ✔ 125 pounds per square inch
,14.Upon notice of a request for an Inspection of the rough plumbing, the
Inspector shall make the Inspection within - ANSWER ✔ two working days
after receipt of such notice
15.Two acceptable tests for Drain and Waste - ANSWER ✔ Peppermint Test
and Air Test
16.Quarter bends, or their equivalent may be used in soil and waste lines when
the change in the direction of the flow is from the - ANSWER ✔ horizontal
to the vertical.
17.Short sweep fittings may be used in a branch waste line when the waste line
serves only - ANSWER ✔ one outlet and cleanouts are provided.
18.List 3 Prohibited Fittings - ANSWER ✔ -No fitting that incorporates a
straight T branch shall be used as a drainage fitting.
- No running threads, bands or saddles shall be used in a drainage
system.
-A fitting commonly referred to as a "Sisson Joint" is prohibited
19.A dead end may be used to? - ANSWER ✔ Extend the cleanout.
20.Where trenches are excavated below grade such that the bottom of the trench
does not form the bed for the pipe, the trench shall be? - ANSWER ✔ back-
filled to grade with sand tamped in place so as to provide a uniform bearing
surface for the pipe between joints.
21.Where rock is encountered in trenching, The rock shall be removed to a
point - ANSWER ✔ at least three inches below the grade line of the trench
and the trench shall be backfilled to grade with sand tamped in place so as to
provide a uniform bearing for the pipe between joints; and b. care shall be
exercised to ensure that no portion of the pipe, including its joints, rests on
any portion of a rock
22.Expansion joints shall be provided - ANSWER ✔ at every other branch
interval up to and including ten stories in height.
, 23.The expansion fitting shall be installed in a - ANSWER ✔ accessible
location in horizontal runs exceeding 20 feet in length.
24.The piping that penetrates concrete floors slabs or concrete walls shall be
provided with sleeves. Maintain an annular space of - ANSWER ✔ one-inch
between the pipe and sleeve.
25.Piping Trench Installations.Using sand or other fine granular material,
compact and backfill around the pipe to a point at least - ANSWER ✔ six-
inches over the crown of the pipe.
26.nstallation Through Fire-walls or Rated Fire Separation Walls. a. When
piping passes through a rated fire separation wall or enclosure to another
dwelling unit or space, the pipe shall be encased or shielded by a metal
sleeve extended - ANSWER ✔ 20 inches on each side of the wall, floor or
ceiling. The metal sleeve shall be 18 gauge
27.Installation. ABS-DWV pipe - ANSWER ✔ Expansion joints are not
required
28.Urinal Wastes. Urinal waste branches and urinal fixture wastes shall
conform to the following: 1 - ANSWER ✔ They shall be made of: a. extra
heavy or service weight cast iron soil pipe and fittings with caulked joints
b. threaded cast iron pipe with cast iron drainage fittings; or
c. iron size copper or brass pipe with cast brass drainage fittings.
29.sumps and Tanks for Sewage. All sumps and tanks for receiving sewage
removed by mechanical or ejector methods, shall be constructed as follows:
- ANSWER ✔ 1. Concrete. Three-inch minimum wall.
2. Cast Iron. Minimum ¼ inch thickness.
3. Steel.
a. Minimum 3/8" inch thickness for above ground. b. For below
ground installation the sump or tank shall be encased in
concrete having a thickness of at least three-inches
30.Vacuum Drainage System. - ANSWER ✔ piping arrangements and vacuum
pumps that are designed and installed in compliance with the manufacturer's
recommendations
