CSLB B LICENSE GENERAL
CONTRACTOR EXAM 2025 with
questions and error free answers.
If unused mortar stiffens due to hydration of cement, what must you do? - ANSWER
Discard the mortar
What minimum time must you wait before caulking or grouting new tiles? -
ANSWER 24-48 Hours
How long should you wait before installing tile on a shower pan? - ANSWER 24
Hours
Unstable dry rock, angular gravel, sandy loam, and cohesive soils having
compressive strengths greater than 0.5 and less than 1.5 tons/sq ft (tsf), are typical
examples of: - ANSWER Type-B Soils
If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across
each light? - ANSWER 35V
In a series circuit, the total voltage is divided equally.
For safety reasons, the maximum simple slope of an excavation, up to 20 ft deep, in
Type-B soil is: - ANSWER 1:1 (45°)
A Pittsburgh joint is used in: - ANSWER HVAC ductwork
The drain for a pressure relief valve on a water heater should be extended to: -
ANSWER The outside of the building
What is the minimum slope toward the drain of a shower pan? - ANSWER 1/4" per
foot (2%)
What is the diameter of #3 rebar? - ANSWER 3/8"
If a vendor fails to provide an MSDS, you have the right to call: - ANSWER
Cal/OSHA or DOSH
When installing a door jamb, you need shims at: - ANSWER Both hinge and strike
sides, three on each side.
Which of the following is used to adhere vinyl floors?
A. Epoxy cement
B. Asphalt mastic
C. Latex primer
D. White glue - ANSWER Epoxy cement
,CSLB B LICENSE GENERAL
CONTRACTOR EXAM 2025 with
questions and error free answers.
When do you need bracing for a drywall wall? - ANSWER Diagonal bracing is
needed every 25' for any drywall wall.
How should you clear the roots from a construction site? - ANSWER Clear roots to
12" below grade.
Dividing watts by amps gives you: - ANSWER Volts
The most frequent on-the-job roofing accidents are: - ANSWER Falls
Which of the following is NOT a type of wood block flooring?
A. Parquet
B. Wood Mosaic
C. Wood Tile
D. All of the above. - ANSWER Wood tile
Lightweight concrete is best used for:
A. Curb and Gutter
B. Second floor decking
C. First floor slab on grade
D. Footings - ANSWER Second floor decking
The tool used to carry grout needed to patch a small hole is a:
A. Hawk
B. Poling board
C. Spot board
D. Mason's scutch - ANSWER Spot Board
Which pipe is NOT appropriate for industrial wastes?
A. Cast iron
B. Schedule 40 ABS DWV
C. Extra strength vitrified clay
D. Copper - ANSWER Copper
Where do you need a fire wall?
A. Between a living room and a bedroom
B. Between a bedroom and a bathroom
C. Between a kitchen and a bath
D. A separation wall between a dwelling and an attachment - ANSWER A
separation wall between a dwelling and an attachment.
,CSLB B LICENSE GENERAL
CONTRACTOR EXAM 2025 with
questions and error free answers.
What is the minimum clearance between rough ground and untreated subfloor
joists? - ANSWER 18 inches
Who may remove asbestos? - ANSWER Contractor with Asbestos Certification on
license.
Which of the following is NOT likely to be found in significant proportions in granular
soil?
A. Gravel
B. Sand
C. Silt
D. Clay - ANSWER Clay
Stiles and rails are used on which of the following?
A. Furred walls
B. Roofs
C. Windows
D. Slabs - ANSWER Windows.
A stile is the vertical edges of the window and the rails are the bottom and top.
What does a high slump test indicate? - ANSWER Too much water.
Metal concrete forms should be?
A. Oiled
B. Watered
C. Placed against gravel
D. Discarded after each use - ANSWER Oiled
What does the R mean in a description of insulation? - ANSWER Resistance
What kind of door would you install for someone with a disability?
A. Automatic with minimum of 3 seconds to close
B. Automatic with maximum of 5 seconds to open
C. Manual with maximum of 8.5 pounds to operate
D. Either A or C - ANSWER Either A or C
Triple-walled metal chimney installations are regulated by: - ANSWER ICC
, CSLB B LICENSE GENERAL
CONTRACTOR EXAM 2025 with
questions and error free answers.
ICC-IBC-IRC is the international code council. IBC is international building code
commercial. IRC is the international residential code.
If you are a general contractor, you should call a specialty contractor when: -
ANSWER You encounter an unfamiliar trade.
When a stairway serves a public building, what is the minimum number of steps for
which a handrail is required? - ANSWER Two
What is the minimum underlayment for asphalt shingles? - ANSWER 15 pounds
How long should you wait before sealing new tile work? - ANSWER 2 weeks
When do you install insulation? - ANSWER After the electrical and plumbing are
approved.
When do you NOT need an exhaust fan in a bathroom? - ANSWER When there is
a window in the bathroom.
What is a bush-hammer used for? - ANSWER Roughen surface of hardened
concrete.
When you say a wall is perfect it is: - ANSWER Both plumb and straight.
The purpose of a batter board in concrete work is: - ANSWER Support layout
strings when location foundations.
What is the difference between a hip jack rafter and a common rafter? - ANSWER
A hip jack runs from the top plate to a hip rafter, but a common rafter runs to the
ridge board.
When should you float a concrete surface? - ANSWER As soon as the water sheen
evaporates
When installing drywall screws you should:
A. Countersink
B. Drive just below the face of the board
C. Leave slightly above the surface
D. Use the highest torque setting - ANSWER Drive just below the face of the board
without breaking the paper.
Before placing tile with mastic, you should: - ANSWER Seal the surface.
CONTRACTOR EXAM 2025 with
questions and error free answers.
If unused mortar stiffens due to hydration of cement, what must you do? - ANSWER
Discard the mortar
What minimum time must you wait before caulking or grouting new tiles? -
ANSWER 24-48 Hours
How long should you wait before installing tile on a shower pan? - ANSWER 24
Hours
Unstable dry rock, angular gravel, sandy loam, and cohesive soils having
compressive strengths greater than 0.5 and less than 1.5 tons/sq ft (tsf), are typical
examples of: - ANSWER Type-B Soils
If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across
each light? - ANSWER 35V
In a series circuit, the total voltage is divided equally.
For safety reasons, the maximum simple slope of an excavation, up to 20 ft deep, in
Type-B soil is: - ANSWER 1:1 (45°)
A Pittsburgh joint is used in: - ANSWER HVAC ductwork
The drain for a pressure relief valve on a water heater should be extended to: -
ANSWER The outside of the building
What is the minimum slope toward the drain of a shower pan? - ANSWER 1/4" per
foot (2%)
What is the diameter of #3 rebar? - ANSWER 3/8"
If a vendor fails to provide an MSDS, you have the right to call: - ANSWER
Cal/OSHA or DOSH
When installing a door jamb, you need shims at: - ANSWER Both hinge and strike
sides, three on each side.
Which of the following is used to adhere vinyl floors?
A. Epoxy cement
B. Asphalt mastic
C. Latex primer
D. White glue - ANSWER Epoxy cement
,CSLB B LICENSE GENERAL
CONTRACTOR EXAM 2025 with
questions and error free answers.
When do you need bracing for a drywall wall? - ANSWER Diagonal bracing is
needed every 25' for any drywall wall.
How should you clear the roots from a construction site? - ANSWER Clear roots to
12" below grade.
Dividing watts by amps gives you: - ANSWER Volts
The most frequent on-the-job roofing accidents are: - ANSWER Falls
Which of the following is NOT a type of wood block flooring?
A. Parquet
B. Wood Mosaic
C. Wood Tile
D. All of the above. - ANSWER Wood tile
Lightweight concrete is best used for:
A. Curb and Gutter
B. Second floor decking
C. First floor slab on grade
D. Footings - ANSWER Second floor decking
The tool used to carry grout needed to patch a small hole is a:
A. Hawk
B. Poling board
C. Spot board
D. Mason's scutch - ANSWER Spot Board
Which pipe is NOT appropriate for industrial wastes?
A. Cast iron
B. Schedule 40 ABS DWV
C. Extra strength vitrified clay
D. Copper - ANSWER Copper
Where do you need a fire wall?
A. Between a living room and a bedroom
B. Between a bedroom and a bathroom
C. Between a kitchen and a bath
D. A separation wall between a dwelling and an attachment - ANSWER A
separation wall between a dwelling and an attachment.
,CSLB B LICENSE GENERAL
CONTRACTOR EXAM 2025 with
questions and error free answers.
What is the minimum clearance between rough ground and untreated subfloor
joists? - ANSWER 18 inches
Who may remove asbestos? - ANSWER Contractor with Asbestos Certification on
license.
Which of the following is NOT likely to be found in significant proportions in granular
soil?
A. Gravel
B. Sand
C. Silt
D. Clay - ANSWER Clay
Stiles and rails are used on which of the following?
A. Furred walls
B. Roofs
C. Windows
D. Slabs - ANSWER Windows.
A stile is the vertical edges of the window and the rails are the bottom and top.
What does a high slump test indicate? - ANSWER Too much water.
Metal concrete forms should be?
A. Oiled
B. Watered
C. Placed against gravel
D. Discarded after each use - ANSWER Oiled
What does the R mean in a description of insulation? - ANSWER Resistance
What kind of door would you install for someone with a disability?
A. Automatic with minimum of 3 seconds to close
B. Automatic with maximum of 5 seconds to open
C. Manual with maximum of 8.5 pounds to operate
D. Either A or C - ANSWER Either A or C
Triple-walled metal chimney installations are regulated by: - ANSWER ICC
, CSLB B LICENSE GENERAL
CONTRACTOR EXAM 2025 with
questions and error free answers.
ICC-IBC-IRC is the international code council. IBC is international building code
commercial. IRC is the international residential code.
If you are a general contractor, you should call a specialty contractor when: -
ANSWER You encounter an unfamiliar trade.
When a stairway serves a public building, what is the minimum number of steps for
which a handrail is required? - ANSWER Two
What is the minimum underlayment for asphalt shingles? - ANSWER 15 pounds
How long should you wait before sealing new tile work? - ANSWER 2 weeks
When do you install insulation? - ANSWER After the electrical and plumbing are
approved.
When do you NOT need an exhaust fan in a bathroom? - ANSWER When there is
a window in the bathroom.
What is a bush-hammer used for? - ANSWER Roughen surface of hardened
concrete.
When you say a wall is perfect it is: - ANSWER Both plumb and straight.
The purpose of a batter board in concrete work is: - ANSWER Support layout
strings when location foundations.
What is the difference between a hip jack rafter and a common rafter? - ANSWER
A hip jack runs from the top plate to a hip rafter, but a common rafter runs to the
ridge board.
When should you float a concrete surface? - ANSWER As soon as the water sheen
evaporates
When installing drywall screws you should:
A. Countersink
B. Drive just below the face of the board
C. Leave slightly above the surface
D. Use the highest torque setting - ANSWER Drive just below the face of the board
without breaking the paper.
Before placing tile with mastic, you should: - ANSWER Seal the surface.
