CSLB B LICENSE GENERAL CONTRACTOR EXAM 2025 100%
ACCURATE
If unused mortar stiffens due to hydration of cement, what must you do? - Correct Answer -
Discard the mortar
What minimum time must you wait before caulking or grouting new tiles? - Correct Answer -24-48
Hours
How long should you wait before installing tile on a shower pan? - Correct 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: - Correct
Answer -Type-B Soils
If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across each light? -
Correct 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: - Correct Answer -1:1 (45°)
A Pittsburgh joint is used in: - Correct Answer -HVAC ductwork
The drain for a pressure relief valve on a water heater should be extended to: - Correct Answer
-The outside of the building
What is the minimum slope toward the drain of a shower pan? - Correct Answer -1/4" per foot
(2%)
What is the diameter of #3 rebar? - Correct Answer -3/8"
If a vendor fails to provide an MSDS, you have the right to call: - Correct Answer -Cal/OSHA or
DOSH
When installing a door jamb, you need shims at: - Correct 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 - Correct Answer -Epoxy cement
When do you need bracing for a drywall wall? - Correct Answer -Diagonal bracing is
needed every 25' for any drywall wall.
How should you clear the roots from a construction site? - Correct Answer - Clear roots to 12"
below grade.
Dividing watts by amps gives you: - Correct Answer -Volts
The most frequent on-the-job roofing accidents are: - Correct 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. - Correct 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 - Correct 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 - Correct 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 - Correct 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 - Correct Answer
-A separation wall between a dwelling and an attachment.
What is the minimum clearance between rough ground and untreated subfloor joists? -
Correct Answer -18 inches
Who may remove asbestos? - Correct 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 - Correct Answer -Clay
Stiles and rails are used on which of the following?
A. Furred walls
B. Roofs
C. Windows
D. Slabs - Correct 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? - Correct Answer -Too much water. Metal concrete forms
should be?
A. Oiled
B. Watered
C. Placed against gravel
D. Discarded after each use - Correct Answer -Oiled
What does the R mean in a description of insulation? - Correct 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 - Correct Answer -Either A or C
, Triple-walled metal chimney installations are regulated by: - Correct Answer - ICC
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: - Correct 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? - Correct Answer -Two
What is the minimum underlayment for asphalt shingles? - Correct Answer - 15 pounds
How long should you wait before sealing new tile work? - Correct Answer -2 weeks
When do you install insulation? - Correct Answer -After the electrical and plumbing are approved.
When do you NOT need an exhaust fan in a bathroom? - Correct Answer - When there is a
window in the bathroom.
What is a bush-hammer used for? - Correct Answer -Roughen surface of hardened concrete.
When you say a wall is perfect it is: - Correct Answer -Both plumb and straight.
The purpose of a batter board in concrete work is: - Correct Answer -Support layout strings when
location foundations.
What is the difference between a hip jack rafter and a common rafter? - Correct 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? - Correct 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
ACCURATE
If unused mortar stiffens due to hydration of cement, what must you do? - Correct Answer -
Discard the mortar
What minimum time must you wait before caulking or grouting new tiles? - Correct Answer -24-48
Hours
How long should you wait before installing tile on a shower pan? - Correct 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: - Correct
Answer -Type-B Soils
If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across each light? -
Correct 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: - Correct Answer -1:1 (45°)
A Pittsburgh joint is used in: - Correct Answer -HVAC ductwork
The drain for a pressure relief valve on a water heater should be extended to: - Correct Answer
-The outside of the building
What is the minimum slope toward the drain of a shower pan? - Correct Answer -1/4" per foot
(2%)
What is the diameter of #3 rebar? - Correct Answer -3/8"
If a vendor fails to provide an MSDS, you have the right to call: - Correct Answer -Cal/OSHA or
DOSH
When installing a door jamb, you need shims at: - Correct 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 - Correct Answer -Epoxy cement
When do you need bracing for a drywall wall? - Correct Answer -Diagonal bracing is
needed every 25' for any drywall wall.
How should you clear the roots from a construction site? - Correct Answer - Clear roots to 12"
below grade.
Dividing watts by amps gives you: - Correct Answer -Volts
The most frequent on-the-job roofing accidents are: - Correct 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. - Correct 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 - Correct 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 - Correct 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 - Correct 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 - Correct Answer
-A separation wall between a dwelling and an attachment.
What is the minimum clearance between rough ground and untreated subfloor joists? -
Correct Answer -18 inches
Who may remove asbestos? - Correct 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 - Correct Answer -Clay
Stiles and rails are used on which of the following?
A. Furred walls
B. Roofs
C. Windows
D. Slabs - Correct 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? - Correct Answer -Too much water. Metal concrete forms
should be?
A. Oiled
B. Watered
C. Placed against gravel
D. Discarded after each use - Correct Answer -Oiled
What does the R mean in a description of insulation? - Correct 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 - Correct Answer -Either A or C
, Triple-walled metal chimney installations are regulated by: - Correct Answer - ICC
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: - Correct 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? - Correct Answer -Two
What is the minimum underlayment for asphalt shingles? - Correct Answer - 15 pounds
How long should you wait before sealing new tile work? - Correct Answer -2 weeks
When do you install insulation? - Correct Answer -After the electrical and plumbing are approved.
When do you NOT need an exhaust fan in a bathroom? - Correct Answer - When there is a
window in the bathroom.
What is a bush-hammer used for? - Correct Answer -Roughen surface of hardened concrete.
When you say a wall is perfect it is: - Correct Answer -Both plumb and straight.
The purpose of a batter board in concrete work is: - Correct Answer -Support layout strings when
location foundations.
What is the difference between a hip jack rafter and a common rafter? - Correct 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? - Correct 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
