Maine Journeyman Plumbing Exam
Guide FINAL EXAM PREP 2025/2026
ACCURATE QUESTIONS WITH
CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS <LATEST
VERSION>
1. The provisions for licensing are determined by: - ANSWER ✓ The AHJ
2. What is AHJ? - ANSWER ✓ Authority Having Jurisdiction
3. What is the minimum unobstructed opening of egress when a shower door is
installed for a typical shower? - ANSWER ✓ 22"
4. The minimum vertical distance from the bottom of an indirect drain line to
its receptor's flood rim is - ANSWER ✓ 1"
5. What are the maximum number fixtures that can be connected to a
horizontal branch? - ANSWER ✓ 8
6. Circuit Vent - ANSWER ✓ A branch vent that serves two or more traps and
extends from in front of the last fixture connection of a horizontal branch to
the vent stack
7. Flexible water connections are required to be - ANSWER ✓ accessible
(concealed in a cabinet is fine, but must have access)
8. Water heaters, hose bibs and sill cocks are normally protected from
backflow with - ANSWER ✓ vacuum breaker
9. Flux can only be used in the brazing process when - ANSWER ✓ Brazing
copper to brass
,10.The minimum depth thickness for a water heater drip pan is - ANSWER ✓
1.5"
11.Gray water that enters a collection reservoir must be - ANSWER ✓ filtered
12.What is the maximum amount of time that gray water is allowed to be
retained for use to flush a toilet or urinal - ANSWER ✓ 72 hrs
13.What is the total pressure in pound per square inch (psi) on a 6 inch diameter
test plug with a water head of 15 feet? - ANSWER ✓ Pressure = Height x
Amount of pressure exerted at base of a one foot stackP = 15 x .434P = 6.51
psi
14.smallest size that is acceptable for the dimensions (height and diameter) of a
sump pit? - ANSWER ✓ 24" H x 18 " D
15.Building sewers shall be tested by completely filling the sewer with water
from the ___. - ANSWER ✓ lowest to highest point
16.The required clearance in front of a 2-inch cleanout is ___ inches. -
ANSWER ✓ 18"
17.the maximum horizontal trap arm distanced is measured from the inner edge
of the vent to the ___ - ANSWER ✓ Weir of the trap
18.Maximum number of lavatories on a horizontal 2" line - ANSWER ✓ 8
19.PEX piping one inch and smaller installed horizontally shall be supported at
intervals not exceeding ___. - ANSWER ✓ 32"
20.The required clearance in front of a 3" cleanout is ____ - ANSWER ✓ 24"
21.Sheet metal, constituting a part of any vent connector, shall be at least ___
inches. - ANSWER ✓ 0.0304 "
22.One material not approved for the installation of an external trap for a urinal
is ___. - ANSWER ✓ drawn-copper alloy
, 23.Hub and spigot cast-iron piping in 10-foot lengths, installed horizontally,
shall be supported at intervals of not more than ___ feet. - ANSWER ✓ 10'
24.copper tube and fittings for drainage and vent piping must be at least -
ANSWER ✓ DWV
25.vitrified clay pipe and fittings are - ANSWER ✓ approved for use of
building drain, and must be kept not less than 12" below ground
26.All trenchesdeeper than the footing of any building or structure and
paralleling the same must be at least _____ - ANSWER ✓ 45 degrees from
edge
27.Cast iron soil pipe stacks must be supported - ANSWER ✓ at their base and
at each floor
28.water service pipes, or any underground water piping shall not be laid in the
same trench with___ - ANSWER ✓ SDR35 unless conditions met
29.notification of inspection must be - ANSWER ✓ 24 hours before
30.minimum size waste pipe for kitchen sink - ANSWER ✓ 2"
31.The minimum trap and arm size for a kitchen sink is _____ inches. -
ANSWER ✓ 1.5"
32.a sewer ejector must have - ANSWER ✓ a backwater valve and gate valve
33.maximum WC on 3" stack - ANSWER ✓ 4
34.max length of 1.5" vent - ANSWER ✓ 60'
35.A 2" waste stack will serve - ANSWER ✓ 8 kitchen sinks
36.Thew aggregate Cross sectional area of all vents serving a 4" waste line -
ANSWER ✓ 12.57
Guide FINAL EXAM PREP 2025/2026
ACCURATE QUESTIONS WITH
CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS <LATEST
VERSION>
1. The provisions for licensing are determined by: - ANSWER ✓ The AHJ
2. What is AHJ? - ANSWER ✓ Authority Having Jurisdiction
3. What is the minimum unobstructed opening of egress when a shower door is
installed for a typical shower? - ANSWER ✓ 22"
4. The minimum vertical distance from the bottom of an indirect drain line to
its receptor's flood rim is - ANSWER ✓ 1"
5. What are the maximum number fixtures that can be connected to a
horizontal branch? - ANSWER ✓ 8
6. Circuit Vent - ANSWER ✓ A branch vent that serves two or more traps and
extends from in front of the last fixture connection of a horizontal branch to
the vent stack
7. Flexible water connections are required to be - ANSWER ✓ accessible
(concealed in a cabinet is fine, but must have access)
8. Water heaters, hose bibs and sill cocks are normally protected from
backflow with - ANSWER ✓ vacuum breaker
9. Flux can only be used in the brazing process when - ANSWER ✓ Brazing
copper to brass
,10.The minimum depth thickness for a water heater drip pan is - ANSWER ✓
1.5"
11.Gray water that enters a collection reservoir must be - ANSWER ✓ filtered
12.What is the maximum amount of time that gray water is allowed to be
retained for use to flush a toilet or urinal - ANSWER ✓ 72 hrs
13.What is the total pressure in pound per square inch (psi) on a 6 inch diameter
test plug with a water head of 15 feet? - ANSWER ✓ Pressure = Height x
Amount of pressure exerted at base of a one foot stackP = 15 x .434P = 6.51
psi
14.smallest size that is acceptable for the dimensions (height and diameter) of a
sump pit? - ANSWER ✓ 24" H x 18 " D
15.Building sewers shall be tested by completely filling the sewer with water
from the ___. - ANSWER ✓ lowest to highest point
16.The required clearance in front of a 2-inch cleanout is ___ inches. -
ANSWER ✓ 18"
17.the maximum horizontal trap arm distanced is measured from the inner edge
of the vent to the ___ - ANSWER ✓ Weir of the trap
18.Maximum number of lavatories on a horizontal 2" line - ANSWER ✓ 8
19.PEX piping one inch and smaller installed horizontally shall be supported at
intervals not exceeding ___. - ANSWER ✓ 32"
20.The required clearance in front of a 3" cleanout is ____ - ANSWER ✓ 24"
21.Sheet metal, constituting a part of any vent connector, shall be at least ___
inches. - ANSWER ✓ 0.0304 "
22.One material not approved for the installation of an external trap for a urinal
is ___. - ANSWER ✓ drawn-copper alloy
, 23.Hub and spigot cast-iron piping in 10-foot lengths, installed horizontally,
shall be supported at intervals of not more than ___ feet. - ANSWER ✓ 10'
24.copper tube and fittings for drainage and vent piping must be at least -
ANSWER ✓ DWV
25.vitrified clay pipe and fittings are - ANSWER ✓ approved for use of
building drain, and must be kept not less than 12" below ground
26.All trenchesdeeper than the footing of any building or structure and
paralleling the same must be at least _____ - ANSWER ✓ 45 degrees from
edge
27.Cast iron soil pipe stacks must be supported - ANSWER ✓ at their base and
at each floor
28.water service pipes, or any underground water piping shall not be laid in the
same trench with___ - ANSWER ✓ SDR35 unless conditions met
29.notification of inspection must be - ANSWER ✓ 24 hours before
30.minimum size waste pipe for kitchen sink - ANSWER ✓ 2"
31.The minimum trap and arm size for a kitchen sink is _____ inches. -
ANSWER ✓ 1.5"
32.a sewer ejector must have - ANSWER ✓ a backwater valve and gate valve
33.maximum WC on 3" stack - ANSWER ✓ 4
34.max length of 1.5" vent - ANSWER ✓ 60'
35.A 2" waste stack will serve - ANSWER ✓ 8 kitchen sinks
36.Thew aggregate Cross sectional area of all vents serving a 4" waste line -
ANSWER ✓ 12.57
