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CSLB B LICENSE GENERAL
CONTRACTOR EXAM 2026/2027
ACTUAL QUESTIONS WITH
VERIFIED 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
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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"
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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
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
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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:
CSLB B LICENSE GENERAL
CONTRACTOR EXAM 2026/2027
ACTUAL QUESTIONS WITH
VERIFIED 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
,2 | Page
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"
,3 | Page
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
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
, 4 | Page
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:
