PLUMBING LEVEL 3 EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS GRADED A
A journeyman plumber and an apprentice, who are employed by a master
plumber, are installing the DWV-system and water distribution system in a
2-½ story single family dwelling. QUESTION: What answer below shall be con-
sidered most correct to complete the following "Plumbing code knowledge"
related statement: A trap that serves a single shower stall that is equipped with a
hand shower, a rain head, and a standard shower head shall be no less than in
minimum diameter
a. 1-½"
b. 2"
c. 2-½"
d. 3": 2 inches
A journeyman plumber and apprentice are installing 3-inch floor drains in an
open-parking-garage that is subject to freezing temperatures. QUESTION: What
answer below shall be considered most correct to complete the follow- ing
"Plumbing code knowledge" related statement: The installation of traps at the floor
drain locations which are found susceptible to freezing temperatures may be
.
a. Increased to 4-inch
b. Eliminated
c. Wrapped with freeze protection cable
d. Insulated: eliminated
A journeyman plumber and apprentice are installing lab sinks with faucets that
are connected to an acid waste system for-(special hazardous waste) in a medical
lab. What answer below shall be considered most correct to complete the following
"Plumbing code knowledge" related statement: Vacuum break- ers shall be
installed with the critical level at least -inches above the flood level rim of
,the fixture they serve and on the discharge side of the last control valve to the
fixture.
a. 12
b. 6
c. 18
d. 3: 6 inches
What answer below shall be considered most correct to complete the follow- ing
"Plumbing code knowledge" related statement: No plumbing permit shall be
issued for cross connection installations that require until the application for a
permit is accompanied by a letter of approval from the Massachusetts
Department of Environmental Protection or its designee.
a. RPBP
b. A "critical level" height
c. Atmospheric vacuum breakers
d. Water recycling systems: reduced pressure backflow preventer (RPBP)
What answer below shall be considered most correct to complete the following
"Plumbing code knowledge" related statement:The waste discharge from safe
waste pans serving water heaters or hot water storage tanks where there is below
and shall be piped indirectly to a properly trapped and vented fixture.
a. People
b. Occupancy
c. Floors
d. Plumbing connections: occupancy
GIVEN: A journeyman plumber and an apprentice, (who are employed by a master
plumber), are installing the sanitary DWV and water distribution system in a five-
,story residential condominium complex. QUESTION: What answer below shall be
considered most correct to complete the following
"Plumbing code knowledge" related statement: CPVC-(Chlorinated Polyvinyl
Chloride) pipe and fittings may be used provided that none of this material is
located within -inches of any connection to a hot water tank as defined in
MGL. c. 142, § 17
a. 12
b. 18
c. 20
d. 24
e. 30: 24 inches
A journeyman plumber and apprentice are roughing-in multiple fixtures in a new
fitness center. The facility will include a juice bar, temporary daycare room, men's
and women's toilet facilities and men's and women's locker rooms. QUESTION:
What answer below shall be considered most correct to complete the following
"Plumbing code knowledge" related statement: A
-vent is a branch vent that serves two or more floor-outlet fixtures that are
battery wasted. The vent extends from the top of the horizontal soil and/or waste
branch in front of the last fixture waste and connects to a vent stack or stack vent
that is adjacent to the down-stream end of the horizontal branch.
a. Side
b. Loop
c. Relief
d. Circuit: loop
N: A journeyman plumber is installing category-I gas appliances and equip- ment in
the basement of a building. A 120,000 BTU/hr. boiler and 40,000 BTU/hr. water heater
are being installed. QUESTION: What answer below shall be considered most
, correct to complete the following "Gas code knowledge" related statement: The
boiler requires a minimum of - cu. ft. of air to support proper combustion
a. 2,400 cu. ft.
b. 120 sq. in.
c. 3,200 sq. ft.
d. 800 cu. ft.: 2,400 cu. ft. 120,000/50
QUESTION: What answer below shall be considered most correct to complete the
following "Gas code knowledge" related statement: The code would require the
gas vent penetrating the roof in-[FIGURE-TP-B-Q1-1A: GAS VENT SIZING] as
identified at point-[A] to be not less than above any portion of a building within
10-feet horizontally.
a. 24"
b. 3-feet
c. 30-inches
d. Forty-two-inches: 24
In Massachusetts copper tubing and fittings may be used for natural gas piping
a. Provided that the tubing is type-k with flared fitting connections.
b. When approved by the authority having jurisdiction.
c. At interior locations only and not concealed.
d. If the gas contains no more than .03 grains of hydrogen sulfide per 100 cu. ft. of
gas.: If the gas contains no more than .03 grains of hydrogen sulfide per 100 cu. ft. of
gas
A journeyman plumber and apprentice, who are employed by a master plumber,
are installing a natural gas fired category-1 boiler and water heater to an interior,
clay tile lined, masonry chimney. When measured in compliance with the code the
chimney "height" is 48-feet. QUESTION: What answer below shall be considered
most correct to complete the following "Gas code knowl- edge" related statement:
CORRECT DETAILED ANSWERS GRADED A
A journeyman plumber and an apprentice, who are employed by a master
plumber, are installing the DWV-system and water distribution system in a
2-½ story single family dwelling. QUESTION: What answer below shall be con-
sidered most correct to complete the following "Plumbing code knowledge"
related statement: A trap that serves a single shower stall that is equipped with a
hand shower, a rain head, and a standard shower head shall be no less than in
minimum diameter
a. 1-½"
b. 2"
c. 2-½"
d. 3": 2 inches
A journeyman plumber and apprentice are installing 3-inch floor drains in an
open-parking-garage that is subject to freezing temperatures. QUESTION: What
answer below shall be considered most correct to complete the follow- ing
"Plumbing code knowledge" related statement: The installation of traps at the floor
drain locations which are found susceptible to freezing temperatures may be
.
a. Increased to 4-inch
b. Eliminated
c. Wrapped with freeze protection cable
d. Insulated: eliminated
A journeyman plumber and apprentice are installing lab sinks with faucets that
are connected to an acid waste system for-(special hazardous waste) in a medical
lab. What answer below shall be considered most correct to complete the following
"Plumbing code knowledge" related statement: Vacuum break- ers shall be
installed with the critical level at least -inches above the flood level rim of
,the fixture they serve and on the discharge side of the last control valve to the
fixture.
a. 12
b. 6
c. 18
d. 3: 6 inches
What answer below shall be considered most correct to complete the follow- ing
"Plumbing code knowledge" related statement: No plumbing permit shall be
issued for cross connection installations that require until the application for a
permit is accompanied by a letter of approval from the Massachusetts
Department of Environmental Protection or its designee.
a. RPBP
b. A "critical level" height
c. Atmospheric vacuum breakers
d. Water recycling systems: reduced pressure backflow preventer (RPBP)
What answer below shall be considered most correct to complete the following
"Plumbing code knowledge" related statement:The waste discharge from safe
waste pans serving water heaters or hot water storage tanks where there is below
and shall be piped indirectly to a properly trapped and vented fixture.
a. People
b. Occupancy
c. Floors
d. Plumbing connections: occupancy
GIVEN: A journeyman plumber and an apprentice, (who are employed by a master
plumber), are installing the sanitary DWV and water distribution system in a five-
,story residential condominium complex. QUESTION: What answer below shall be
considered most correct to complete the following
"Plumbing code knowledge" related statement: CPVC-(Chlorinated Polyvinyl
Chloride) pipe and fittings may be used provided that none of this material is
located within -inches of any connection to a hot water tank as defined in
MGL. c. 142, § 17
a. 12
b. 18
c. 20
d. 24
e. 30: 24 inches
A journeyman plumber and apprentice are roughing-in multiple fixtures in a new
fitness center. The facility will include a juice bar, temporary daycare room, men's
and women's toilet facilities and men's and women's locker rooms. QUESTION:
What answer below shall be considered most correct to complete the following
"Plumbing code knowledge" related statement: A
-vent is a branch vent that serves two or more floor-outlet fixtures that are
battery wasted. The vent extends from the top of the horizontal soil and/or waste
branch in front of the last fixture waste and connects to a vent stack or stack vent
that is adjacent to the down-stream end of the horizontal branch.
a. Side
b. Loop
c. Relief
d. Circuit: loop
N: A journeyman plumber is installing category-I gas appliances and equip- ment in
the basement of a building. A 120,000 BTU/hr. boiler and 40,000 BTU/hr. water heater
are being installed. QUESTION: What answer below shall be considered most
, correct to complete the following "Gas code knowledge" related statement: The
boiler requires a minimum of - cu. ft. of air to support proper combustion
a. 2,400 cu. ft.
b. 120 sq. in.
c. 3,200 sq. ft.
d. 800 cu. ft.: 2,400 cu. ft. 120,000/50
QUESTION: What answer below shall be considered most correct to complete the
following "Gas code knowledge" related statement: The code would require the
gas vent penetrating the roof in-[FIGURE-TP-B-Q1-1A: GAS VENT SIZING] as
identified at point-[A] to be not less than above any portion of a building within
10-feet horizontally.
a. 24"
b. 3-feet
c. 30-inches
d. Forty-two-inches: 24
In Massachusetts copper tubing and fittings may be used for natural gas piping
a. Provided that the tubing is type-k with flared fitting connections.
b. When approved by the authority having jurisdiction.
c. At interior locations only and not concealed.
d. If the gas contains no more than .03 grains of hydrogen sulfide per 100 cu. ft. of
gas.: If the gas contains no more than .03 grains of hydrogen sulfide per 100 cu. ft. of
gas
A journeyman plumber and apprentice, who are employed by a master plumber,
are installing a natural gas fired category-1 boiler and water heater to an interior,
clay tile lined, masonry chimney. When measured in compliance with the code the
chimney "height" is 48-feet. QUESTION: What answer below shall be considered
most correct to complete the following "Gas code knowl- edge" related statement:
