1|Page
CSLB B CONTRACTORS LICENSE EXAM/ CSLB B
LICENSE STUDY GUIDE WITH DETAILED CORRECT
ANSWERSUPDATED
If unused mortar stiffens due to hydration of cement, what must you do? -
(answers)Discard the mortar
What minimum time must you wait before caulking or grouting new tiles? -
(answers)24-48 Hours
How long should you wait before installing tile on a shower pan? - (answers)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: - (answers)Type-B Soils
If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across
each light? - (answers)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: - (answers)1:1 (45°)
A Pittsburgh joint is used in: - (answers)HVAC ductwork
,2|Page
The drain for a pressure relief valve on a water heater should be extended to: -
(answers)The outside of the building
What is the minimum slope toward the drain of a shower pan? - (answers)1/4"
per foot (2%)
What is the diameter of #3 rebar? - (answers)3/8"
If a vendor fails to provide an MSDS, you have the right to call: -
(answers)Cal/OSHA or DOSH
When installing a door jamb, you need shims at: - (answers)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 - (answers)Epoxy cement
,3|Page
When do you need bracing for a drywall wall? - (answers)Diagonal bracing is
needed every 25' for any drywall wall.
How should you clear the roots from a construction site? - (answers)Clear roots to
12" below grade.
Dividing watts by amps gives you: - (answers)Volts
The most frequent on-the-job roofing accidents are: - (answers)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. - (answers)Wood tile
Lightweight concrete is best used for:
A. Curb and Gutter
B. Second floor decking
C. First floor slab on grade
, 4|Page
D. Footings - (answers)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 - (answers)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 - (answers)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
CSLB B CONTRACTORS LICENSE EXAM/ CSLB B
LICENSE STUDY GUIDE WITH DETAILED CORRECT
ANSWERSUPDATED
If unused mortar stiffens due to hydration of cement, what must you do? -
(answers)Discard the mortar
What minimum time must you wait before caulking or grouting new tiles? -
(answers)24-48 Hours
How long should you wait before installing tile on a shower pan? - (answers)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: - (answers)Type-B Soils
If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across
each light? - (answers)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: - (answers)1:1 (45°)
A Pittsburgh joint is used in: - (answers)HVAC ductwork
,2|Page
The drain for a pressure relief valve on a water heater should be extended to: -
(answers)The outside of the building
What is the minimum slope toward the drain of a shower pan? - (answers)1/4"
per foot (2%)
What is the diameter of #3 rebar? - (answers)3/8"
If a vendor fails to provide an MSDS, you have the right to call: -
(answers)Cal/OSHA or DOSH
When installing a door jamb, you need shims at: - (answers)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 - (answers)Epoxy cement
,3|Page
When do you need bracing for a drywall wall? - (answers)Diagonal bracing is
needed every 25' for any drywall wall.
How should you clear the roots from a construction site? - (answers)Clear roots to
12" below grade.
Dividing watts by amps gives you: - (answers)Volts
The most frequent on-the-job roofing accidents are: - (answers)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. - (answers)Wood tile
Lightweight concrete is best used for:
A. Curb and Gutter
B. Second floor decking
C. First floor slab on grade
, 4|Page
D. Footings - (answers)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 - (answers)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 - (answers)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
