CSLB Class B General Contractor's License Core Trades Exam
CSLB Class B General Contractor's License Core CSLB Class B General Contractor's License Core Trades EXAM
Trades EXAM
CSLB Class B General Contractor's License Core
Trades EXAM
CSLB Class B General Contractor's License Core
Trades EXAM
Which personal lift is not acceptable? D) Endless rope lift
A) Scissor
B) Boom
C) Manual
D) Endless rope lift
Who is licensed to install residential fire sprinkler B) Fire protection contractor
systems?
A) Plumbing contractor
B) Fire protection contractor
C) General Building contractor
D) Pipeline contractor
When brazing or soldering gas pipes during the C) Clean the surface using a power tool
installation of water heaters, what is the best way to
prepare the pipe?
A) Clean it with water
B) Blow into the pipe using your lungs
C) Clean the surface using a power tool
D) Use a pressurized air canister
What is the purpose of PVC primer? B) To soften PVC pipe before applying PVC cement
A) To glue PVC pipes to other materials
B) To soften PVC pipe before applying PVC cement
C) To prevent electrical shock
D) To help solder conduit or piping
What is the most common location to find a roof leak? C) Flashing
A) Attic (Leaks are most common when two surfaces meet or around fenestration. Leaks
B) Shingles are most prominent in valley flashing and improperly installed window flashing.)
C) Flashing
D) Collar tie
What is the most common reason for noise in piping C) Pipe supports come into contact with metal piping
when a water fixture is turned on or off?
(Mainly due to water hammer.)
A) Hot water was used
B) Cold water was used
C) Pipe supports come into contact with metal piping
D) The walls are not up to code causing pipe failure
If you send your employee to purchase a 2-inch water C) Brass type
supply valve and they return with a 1.5-inch supply valve,
then what is the proper composition of the valve?
A) The casing must be made of plastic
B) The employee must return and purchase a wrought
iron valve
C) Brass type
D) The connection must be silver and body made of iron
When penetrating a roof with an exhaust, the exhaust 10
must be no closer than _____ feet to any air intake or
openable window.
, CSLB Class B General Contractor's License Core Trades Exam
Which roof assembly has the best fire rating? A) Class A
A) Class A
B) Class B
C) Class I
D) Class III
What does material compatibility refer to when installing D) Use of materials that are compatible with the type of pipe and fitting materials
alternate water sources in existing plumbing systems?
A) Plumbing fixtures have to come from the same
manufacturer
B) Only the couplings must be made of metal
C) All plumbing connections must be soldered or brazed
D) Use of materials that are compatible with the type of
pipe and fitting materials
When you have a gap in the building envelope, what do C) Weather seal, weather strip, and apply caulking
you do to prevent air leakage?
A) Stuff insulation into gaps
B) Put caulking in and around the gaps
C) Weather seal, weather strip, and apply caulking
D) Nothing, all buildings require air leakage
In order to protect a water heater from damage, what is 18 inches
the minimum height it should be from the floor of a
garage?
How many plumbing fixtures can be vented by a single 4
vertical wet-vent?
(According to the California Plumbing Code, the vertical piping between two
consecutive inlet levels shall be considered a wet-vented section. Each wet-
vented section shall be not less than one pipe size exceeding the required
minimum waste pipe size of the upper fixture or shall be one pipe size exceeding
the required minimum pipe size for the sum of the fixture units served by such
wet-vented section, whichever is larger, but no case less than 2 inches.)
After the construction of a new home you turn on the D) Inspect the tank and pump for mechanical problems
faucet in the kitchen and the water pressure is extremely
low, how should you proceed to test the problem?
A) Call the inspector
B) Hire a plumbing contractor
C) Turn on the light switch
D) Inspect the tank and pump for mechanical problems
When drilling a 2 x 4 the minimum distance from the 5/8"
edge to the hole should be:
What is the minimum size a water supply pipe to a 0.75 inches
building?
When do you wet a concrete block during installation? Never
What is the minimum slope of a finished shower floor? 1/8 inch per foot
Section 408.5 of the California Plumbing Code states that the finished floor of the
receptor should slope uniformly from the sides towards the drain, not less than
1/8 inch per foot, nor more than 1/2 inch per foot. For further clarification, the
California Plumbing Code refers to field-fabricated shower pans as "receptors." It
is important not to confuse the requirements in CPC 408.5 with CPC 408.7,
which specifies that the lining materials for showers and receptors should be
pitched ¼ inch per foot towards weep holes in the subdrain of a smooth and
solidly formed subbase.
CSLB Class B General Contractor's License Core CSLB Class B General Contractor's License Core Trades EXAM
Trades EXAM
CSLB Class B General Contractor's License Core
Trades EXAM
CSLB Class B General Contractor's License Core
Trades EXAM
Which personal lift is not acceptable? D) Endless rope lift
A) Scissor
B) Boom
C) Manual
D) Endless rope lift
Who is licensed to install residential fire sprinkler B) Fire protection contractor
systems?
A) Plumbing contractor
B) Fire protection contractor
C) General Building contractor
D) Pipeline contractor
When brazing or soldering gas pipes during the C) Clean the surface using a power tool
installation of water heaters, what is the best way to
prepare the pipe?
A) Clean it with water
B) Blow into the pipe using your lungs
C) Clean the surface using a power tool
D) Use a pressurized air canister
What is the purpose of PVC primer? B) To soften PVC pipe before applying PVC cement
A) To glue PVC pipes to other materials
B) To soften PVC pipe before applying PVC cement
C) To prevent electrical shock
D) To help solder conduit or piping
What is the most common location to find a roof leak? C) Flashing
A) Attic (Leaks are most common when two surfaces meet or around fenestration. Leaks
B) Shingles are most prominent in valley flashing and improperly installed window flashing.)
C) Flashing
D) Collar tie
What is the most common reason for noise in piping C) Pipe supports come into contact with metal piping
when a water fixture is turned on or off?
(Mainly due to water hammer.)
A) Hot water was used
B) Cold water was used
C) Pipe supports come into contact with metal piping
D) The walls are not up to code causing pipe failure
If you send your employee to purchase a 2-inch water C) Brass type
supply valve and they return with a 1.5-inch supply valve,
then what is the proper composition of the valve?
A) The casing must be made of plastic
B) The employee must return and purchase a wrought
iron valve
C) Brass type
D) The connection must be silver and body made of iron
When penetrating a roof with an exhaust, the exhaust 10
must be no closer than _____ feet to any air intake or
openable window.
, CSLB Class B General Contractor's License Core Trades Exam
Which roof assembly has the best fire rating? A) Class A
A) Class A
B) Class B
C) Class I
D) Class III
What does material compatibility refer to when installing D) Use of materials that are compatible with the type of pipe and fitting materials
alternate water sources in existing plumbing systems?
A) Plumbing fixtures have to come from the same
manufacturer
B) Only the couplings must be made of metal
C) All plumbing connections must be soldered or brazed
D) Use of materials that are compatible with the type of
pipe and fitting materials
When you have a gap in the building envelope, what do C) Weather seal, weather strip, and apply caulking
you do to prevent air leakage?
A) Stuff insulation into gaps
B) Put caulking in and around the gaps
C) Weather seal, weather strip, and apply caulking
D) Nothing, all buildings require air leakage
In order to protect a water heater from damage, what is 18 inches
the minimum height it should be from the floor of a
garage?
How many plumbing fixtures can be vented by a single 4
vertical wet-vent?
(According to the California Plumbing Code, the vertical piping between two
consecutive inlet levels shall be considered a wet-vented section. Each wet-
vented section shall be not less than one pipe size exceeding the required
minimum waste pipe size of the upper fixture or shall be one pipe size exceeding
the required minimum pipe size for the sum of the fixture units served by such
wet-vented section, whichever is larger, but no case less than 2 inches.)
After the construction of a new home you turn on the D) Inspect the tank and pump for mechanical problems
faucet in the kitchen and the water pressure is extremely
low, how should you proceed to test the problem?
A) Call the inspector
B) Hire a plumbing contractor
C) Turn on the light switch
D) Inspect the tank and pump for mechanical problems
When drilling a 2 x 4 the minimum distance from the 5/8"
edge to the hole should be:
What is the minimum size a water supply pipe to a 0.75 inches
building?
When do you wet a concrete block during installation? Never
What is the minimum slope of a finished shower floor? 1/8 inch per foot
Section 408.5 of the California Plumbing Code states that the finished floor of the
receptor should slope uniformly from the sides towards the drain, not less than
1/8 inch per foot, nor more than 1/2 inch per foot. For further clarification, the
California Plumbing Code refers to field-fabricated shower pans as "receptors." It
is important not to confuse the requirements in CPC 408.5 with CPC 408.7,
which specifies that the lining materials for showers and receptors should be
pitched ¼ inch per foot towards weep holes in the subdrain of a smooth and
solidly formed subbase.
