CSLB B LICENSE GENERAL CONTRACTOR EXAM 2025 QUESTIONS AND 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
,CSLB B LICENSE GENERAL CONTRACTOR EXAM 2025 QUESTIONS AND ANSWERS
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
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:
,CSLB B LICENSE GENERAL CONTRACTOR EXAM 2025 QUESTIONS AND ANSWERS
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 QUESTIONS AND 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
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
,CSLB B LICENSE GENERAL CONTRACTOR EXAM 2025 QUESTIONS AND ANSWERS
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
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:
,CSLB B LICENSE GENERAL CONTRACTOR EXAM 2025 QUESTIONS AND ANSWERS
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 QUESTIONS AND 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
