CSLB B LICENSE GENERAL CONTRACTOR EXAM STUDY GUIDE –
EXPERT VERIFIED ACTUAL QUESTIONS & ANSWERS FOR
GUARANTEED PASS | NEWEST UPDATE, 2025-2026.
If unused mortar stiffens due to hydration of cement, what must you do? - correct
answerDiscard the mortar
What minimum time must you wait before caulking or grouting new tiles? - correct
answer24-48 Hours
How long should you wait before installing tile on a shower pan? - correct answer24
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 answerType-B Soils
If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across each
light? - correct answer35V
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 answer1:1 (45°)
A Pittsburgh joint is used in: - correct answerHVAC ductwork
The drain for a pressure relief valve on a water heater should be extended to: - correct
answerThe outside of the building
What is the minimum slope toward the drain of a shower pan? - correct answer1/4" per
foot (2%)
What is the diameter of #3 rebar? - correct answer3/8"
If a vendor fails to provide an MSDS, you have the right to call: - correct
answerCal/OSHA or DOSH
When installing a door jamb, you need shims at: - correct answerBoth 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 answerEpoxy cement
,CSLB B LICENSE GENERAL CONTRACTOR EXAM STUDY GUIDE –
EXPERT VERIFIED ACTUAL QUESTIONS & ANSWERS FOR
GUARANTEED PASS | NEWEST UPDATE, 2025-2026.
When do you need bracing for a drywall wall? - correct answerDiagonal bracing is
needed every 25' for any drywall wall.
How should you clear the roots from a construction site? - correct answerClear roots to
12" below grade.
Dividing watts by amps gives you: - correct answerVolts
The most frequent on-the-job roofing accidents are: - correct answerFalls
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 answerWood tile
Lightweight concrete is best used for:
A. Curb and Gutter
B. Second floor decking
C. First floor slab on grade
D. Footings - correct answerSecond 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 answerSpot 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 answerCopper
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 answerA
separation wall between a dwelling and an attachment.
,CSLB B LICENSE GENERAL CONTRACTOR EXAM STUDY GUIDE –
EXPERT VERIFIED ACTUAL QUESTIONS & ANSWERS FOR
GUARANTEED PASS | NEWEST UPDATE, 2025-2026.
What is the minimum clearance between rough ground and untreated subfloor joists? -
correct answer18 inches
Who may remove asbestos? - correct answerContractor 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 answerClay
Stiles and rails are used on which of the following?
A. Furred walls
B. Roofs
C. Windows
D. Slabs - correct answerWindows.
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 answerToo much water.
Metal concrete forms should be?
A. Oiled
B. Watered
C. Placed against gravel
D. Discarded after each use - correct answerOiled
What does the R mean in a description of insulation? - correct answerResistance
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 answerEither A or C
Triple-walled metal chimney installations are regulated by: - correct answerICC
, CSLB B LICENSE GENERAL CONTRACTOR EXAM STUDY GUIDE –
EXPERT VERIFIED ACTUAL QUESTIONS & ANSWERS FOR
GUARANTEED PASS | NEWEST UPDATE, 2025-2026.
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
answerYou 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 answerTwo
What is the minimum underlayment for asphalt shingles? - correct answer15 pounds
How long should you wait before sealing new tile work? - correct answer2 weeks
When do you install insulation? - correct answerAfter the electrical and plumbing are
approved.
When do you NOT need an exhaust fan in a bathroom? - correct answerWhen there is
a window in the bathroom.
What is a bush-hammer used for? - correct answerRoughen surface of hardened
concrete.
When you say a wall is perfect it is: - correct answerBoth plumb and straight.
The purpose of a batter board in concrete work is: - correct answerSupport layout
strings when location foundations.
What is the difference between a hip jack rafter and a common rafter? - correct
answerA 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 answerAs 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 - correct answerDrive just below the face of the board
without breaking the paper.
Before placing tile with mastic, you should: - correct answerSeal the surface.
EXPERT VERIFIED ACTUAL QUESTIONS & ANSWERS FOR
GUARANTEED PASS | NEWEST UPDATE, 2025-2026.
If unused mortar stiffens due to hydration of cement, what must you do? - correct
answerDiscard the mortar
What minimum time must you wait before caulking or grouting new tiles? - correct
answer24-48 Hours
How long should you wait before installing tile on a shower pan? - correct answer24
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 answerType-B Soils
If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across each
light? - correct answer35V
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 answer1:1 (45°)
A Pittsburgh joint is used in: - correct answerHVAC ductwork
The drain for a pressure relief valve on a water heater should be extended to: - correct
answerThe outside of the building
What is the minimum slope toward the drain of a shower pan? - correct answer1/4" per
foot (2%)
What is the diameter of #3 rebar? - correct answer3/8"
If a vendor fails to provide an MSDS, you have the right to call: - correct
answerCal/OSHA or DOSH
When installing a door jamb, you need shims at: - correct answerBoth 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 answerEpoxy cement
,CSLB B LICENSE GENERAL CONTRACTOR EXAM STUDY GUIDE –
EXPERT VERIFIED ACTUAL QUESTIONS & ANSWERS FOR
GUARANTEED PASS | NEWEST UPDATE, 2025-2026.
When do you need bracing for a drywall wall? - correct answerDiagonal bracing is
needed every 25' for any drywall wall.
How should you clear the roots from a construction site? - correct answerClear roots to
12" below grade.
Dividing watts by amps gives you: - correct answerVolts
The most frequent on-the-job roofing accidents are: - correct answerFalls
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 answerWood tile
Lightweight concrete is best used for:
A. Curb and Gutter
B. Second floor decking
C. First floor slab on grade
D. Footings - correct answerSecond 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 answerSpot 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 answerCopper
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 answerA
separation wall between a dwelling and an attachment.
,CSLB B LICENSE GENERAL CONTRACTOR EXAM STUDY GUIDE –
EXPERT VERIFIED ACTUAL QUESTIONS & ANSWERS FOR
GUARANTEED PASS | NEWEST UPDATE, 2025-2026.
What is the minimum clearance between rough ground and untreated subfloor joists? -
correct answer18 inches
Who may remove asbestos? - correct answerContractor 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 answerClay
Stiles and rails are used on which of the following?
A. Furred walls
B. Roofs
C. Windows
D. Slabs - correct answerWindows.
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 answerToo much water.
Metal concrete forms should be?
A. Oiled
B. Watered
C. Placed against gravel
D. Discarded after each use - correct answerOiled
What does the R mean in a description of insulation? - correct answerResistance
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 answerEither A or C
Triple-walled metal chimney installations are regulated by: - correct answerICC
, CSLB B LICENSE GENERAL CONTRACTOR EXAM STUDY GUIDE –
EXPERT VERIFIED ACTUAL QUESTIONS & ANSWERS FOR
GUARANTEED PASS | NEWEST UPDATE, 2025-2026.
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
answerYou 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 answerTwo
What is the minimum underlayment for asphalt shingles? - correct answer15 pounds
How long should you wait before sealing new tile work? - correct answer2 weeks
When do you install insulation? - correct answerAfter the electrical and plumbing are
approved.
When do you NOT need an exhaust fan in a bathroom? - correct answerWhen there is
a window in the bathroom.
What is a bush-hammer used for? - correct answerRoughen surface of hardened
concrete.
When you say a wall is perfect it is: - correct answerBoth plumb and straight.
The purpose of a batter board in concrete work is: - correct answerSupport layout
strings when location foundations.
What is the difference between a hip jack rafter and a common rafter? - correct
answerA 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 answerAs 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 - correct answerDrive just below the face of the board
without breaking the paper.
Before placing tile with mastic, you should: - correct answerSeal the surface.
