MASSACHUSETTS JOURNEYMAN PIPEFITTER REVISION
EXAM 2025/2026 QUESTIONS WITH ANSWERS GRADED A+
✔✔PVC/ABS MAY be used for drains in commercial applications necessary to
accommodate waste generated as a direct result of the business: - ✔✔i. beauty salons;
ii. barber shops;
iii. manicure salons;
iv. pedicure salons;
v. photo-labs; and
-commercial buildings that incorporate patron areas for the purpose of serving alcohol,
soda or other similar carbonated type beverages where the carbonated liquid waste
shall drain directly into a floor sink or floor drain
✔✔Hubless Fittings. (i) There shall be a hanger installed at - ✔✔-each change of
direction
-When joining three or more fittings, there shall be a minimum of one hanger for every
three-feet or part thereof
✔✔Water Service Piping (Outside Building). The materials used shall be those specified
by the - ✔✔local municipality
✔✔The piping that penetrates concrete floors slabs or concrete walls shall be provided
with sleeves. Maintain an annular space of - ✔✔one-inch between the pipe and sleeve.
✔✔The developed length distance from the fixture outlet to the trap weir shall not
exceed - ✔✔24 inches
✔✔The piping shall be connected to cast iron soil pipe hubs using oakum and no less
than - ✔✔one-inch of molten lead
✔✔Caulk the joint along the inside and outside edges after it has cooled for - ✔✔4
minuets
✔✔Thermal Expansion. . Thermal expansion of PVC pipe occurs at the rate of
approximately? - ✔✔3/8" inch per ten feet length per 100°F temperature change
✔✔In a PVC-DWV system an expansion allowance of - ✔✔½ inch per ten feet length of
pipe is required
✔✔Expansion joints shall be provided - ✔✔at every other branch interval up to and
including ten stories in height.
✔✔The expansion fitting shall be installed in a - ✔✔accessible location in horizontal
runs exceeding 20 feet in length.
,✔✔The piping that penetrates concrete floors slabs or concrete walls shall be provided
with sleeves. Maintain an annular space of - ✔✔one-inch between the pipe and sleeve.
✔✔Piping Trench Installations.Using sand or other fine granular material, compact and
backfill around the pipe to a point at least - ✔✔six-inches over the crown of the pipe.
✔✔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 - ✔✔20 inches
on each side of the wall, floor or ceiling. The metal sleeve shall be 18 gauge
✔✔Installation. ABS-DWV pipe - ✔✔Expansion joints are not required
✔✔Urinal Wastes. Urinal waste branches and urinal fixture wastes shall conform to the
following: 1 - ✔✔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.
✔✔sumps and Tanks for Sewage. All sumps and tanks for receiving sewage removed
by mechanical or ejector methods, shall be constructed as follows: - ✔✔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
✔✔Vacuum Drainage System. - ✔✔piping arrangements and vacuum pumps that are
designed and installed in compliance with the manufacturer's recommendations
✔✔Caulked Cast Iron Soil Pipe. Every lead caulked joint for cast iron bell and spigot soil
pipe shall: - ✔✔1. be firmly packed with oakum or hemp;
2. be filled with molten lead that is not less than one inch-deep and does not extend
more than c inch below the rim of the hub;
3. not have paint, varnish, or other coatings on the jointing material until after the joint
has been tested and approved; and
4. have lead run in one continuous pour and shall have the lead caulked tight
✔✔Mechanical (Flexible or Slip Joint). 1. Cast Iron Pipe or Ductile Iron Pipe. Every
mechanical joint in cast iron pipe or ductile iron pipe shall be - ✔✔a. made with a
flanged collar, rubber ring gasket, and appropriate number of securing bolts; or
b. made with a preformed molded ring secured by pulling the pipe together in such a
way as to compress the molded ring
, ✔✔Slip joints may be used on the - ✔✔inlet ("house-side") of the trap only.
✔✔Wiped joints shall have an exposed surface on each side of a joint that is greater
than or equal to - ✔✔¾ inch in width and be as thick as the material being joined
✔✔The developed length distance from the fixture outlet to the trap weir shall not
exceed - ✔✔24 inches
✔✔Prohibited Traps. The following type traps are prohibited. - ✔✔1. Traps which
depend upon moving parts to maintain their seal
2. Bell traps.
3. Crown vented traps.
4. Separate fixture traps which depend on interior partitions for their seal.
5. Full "S" traps
✔✔Slip joints or couplings may be used on the - ✔✔trap inlet or within the trap seal of
the trap if a metal-to-metal ground joint is used.
✔✔No fixture shall be - ✔✔double trapped
✔✔A combination plumbing fixture may be installed on one trap - ✔✔-one compartment
is not more than six inches deeper than the other
-the waste outlets are not more than 30 inches apart.
✔✔One trap may be installed for not more than - ✔✔three single compartment sinks or
lavatories, immediately adjacent to each other, and in the same room.
✔✔The waste for a domestic type dishwasher may be separately trapped, or may
connect to the - ✔✔manufactured inlet side opening of a food waste grinder.
✔✔Tubing traps made of brass or copper shall be of a thickness equal to a minimum of
- ✔✔17 gauge
✔✔Traps and Fittings. (f) Trap Seal. Each fixture trap shall have a liquid seal of not less
than - ✔✔two inches and not more than four inches, except where for special
conditions, a deeper seal may be required.
✔✔Cleanouts shall not be placed more than 50 feet apart in all horizontal drainage
piping and branch drain piping that is - ✔✔four inch nominal diameter or less
✔✔On piping that is over four inch nominal diameter the cleanouts shall not be more
than - ✔✔100 feet apart
EXAM 2025/2026 QUESTIONS WITH ANSWERS GRADED A+
✔✔PVC/ABS MAY be used for drains in commercial applications necessary to
accommodate waste generated as a direct result of the business: - ✔✔i. beauty salons;
ii. barber shops;
iii. manicure salons;
iv. pedicure salons;
v. photo-labs; and
-commercial buildings that incorporate patron areas for the purpose of serving alcohol,
soda or other similar carbonated type beverages where the carbonated liquid waste
shall drain directly into a floor sink or floor drain
✔✔Hubless Fittings. (i) There shall be a hanger installed at - ✔✔-each change of
direction
-When joining three or more fittings, there shall be a minimum of one hanger for every
three-feet or part thereof
✔✔Water Service Piping (Outside Building). The materials used shall be those specified
by the - ✔✔local municipality
✔✔The piping that penetrates concrete floors slabs or concrete walls shall be provided
with sleeves. Maintain an annular space of - ✔✔one-inch between the pipe and sleeve.
✔✔The developed length distance from the fixture outlet to the trap weir shall not
exceed - ✔✔24 inches
✔✔The piping shall be connected to cast iron soil pipe hubs using oakum and no less
than - ✔✔one-inch of molten lead
✔✔Caulk the joint along the inside and outside edges after it has cooled for - ✔✔4
minuets
✔✔Thermal Expansion. . Thermal expansion of PVC pipe occurs at the rate of
approximately? - ✔✔3/8" inch per ten feet length per 100°F temperature change
✔✔In a PVC-DWV system an expansion allowance of - ✔✔½ inch per ten feet length of
pipe is required
✔✔Expansion joints shall be provided - ✔✔at every other branch interval up to and
including ten stories in height.
✔✔The expansion fitting shall be installed in a - ✔✔accessible location in horizontal
runs exceeding 20 feet in length.
,✔✔The piping that penetrates concrete floors slabs or concrete walls shall be provided
with sleeves. Maintain an annular space of - ✔✔one-inch between the pipe and sleeve.
✔✔Piping Trench Installations.Using sand or other fine granular material, compact and
backfill around the pipe to a point at least - ✔✔six-inches over the crown of the pipe.
✔✔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 - ✔✔20 inches
on each side of the wall, floor or ceiling. The metal sleeve shall be 18 gauge
✔✔Installation. ABS-DWV pipe - ✔✔Expansion joints are not required
✔✔Urinal Wastes. Urinal waste branches and urinal fixture wastes shall conform to the
following: 1 - ✔✔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.
✔✔sumps and Tanks for Sewage. All sumps and tanks for receiving sewage removed
by mechanical or ejector methods, shall be constructed as follows: - ✔✔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
✔✔Vacuum Drainage System. - ✔✔piping arrangements and vacuum pumps that are
designed and installed in compliance with the manufacturer's recommendations
✔✔Caulked Cast Iron Soil Pipe. Every lead caulked joint for cast iron bell and spigot soil
pipe shall: - ✔✔1. be firmly packed with oakum or hemp;
2. be filled with molten lead that is not less than one inch-deep and does not extend
more than c inch below the rim of the hub;
3. not have paint, varnish, or other coatings on the jointing material until after the joint
has been tested and approved; and
4. have lead run in one continuous pour and shall have the lead caulked tight
✔✔Mechanical (Flexible or Slip Joint). 1. Cast Iron Pipe or Ductile Iron Pipe. Every
mechanical joint in cast iron pipe or ductile iron pipe shall be - ✔✔a. made with a
flanged collar, rubber ring gasket, and appropriate number of securing bolts; or
b. made with a preformed molded ring secured by pulling the pipe together in such a
way as to compress the molded ring
, ✔✔Slip joints may be used on the - ✔✔inlet ("house-side") of the trap only.
✔✔Wiped joints shall have an exposed surface on each side of a joint that is greater
than or equal to - ✔✔¾ inch in width and be as thick as the material being joined
✔✔The developed length distance from the fixture outlet to the trap weir shall not
exceed - ✔✔24 inches
✔✔Prohibited Traps. The following type traps are prohibited. - ✔✔1. Traps which
depend upon moving parts to maintain their seal
2. Bell traps.
3. Crown vented traps.
4. Separate fixture traps which depend on interior partitions for their seal.
5. Full "S" traps
✔✔Slip joints or couplings may be used on the - ✔✔trap inlet or within the trap seal of
the trap if a metal-to-metal ground joint is used.
✔✔No fixture shall be - ✔✔double trapped
✔✔A combination plumbing fixture may be installed on one trap - ✔✔-one compartment
is not more than six inches deeper than the other
-the waste outlets are not more than 30 inches apart.
✔✔One trap may be installed for not more than - ✔✔three single compartment sinks or
lavatories, immediately adjacent to each other, and in the same room.
✔✔The waste for a domestic type dishwasher may be separately trapped, or may
connect to the - ✔✔manufactured inlet side opening of a food waste grinder.
✔✔Tubing traps made of brass or copper shall be of a thickness equal to a minimum of
- ✔✔17 gauge
✔✔Traps and Fittings. (f) Trap Seal. Each fixture trap shall have a liquid seal of not less
than - ✔✔two inches and not more than four inches, except where for special
conditions, a deeper seal may be required.
✔✔Cleanouts shall not be placed more than 50 feet apart in all horizontal drainage
piping and branch drain piping that is - ✔✔four inch nominal diameter or less
✔✔On piping that is over four inch nominal diameter the cleanouts shall not be more
than - ✔✔100 feet apart
