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CSLB B LICENSE GENERAL CONTRACTOR EXAM QUESTIONS AND
ANSWERS, LATEST 2025 REAL GUIDE | GRADED A+
If unused mortar stiffens due to hydration of cement, what must you do? - Discard the mortar What minimum time must you wait before caulking or grouting new tiles? - 24-48 Hours
How long should you wait before installing tile on a shower pan? - 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: - Type-B Soils
If 65 street lights are fed by a 2275-volt series circuit, what is the voltage across each light? - 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: - 1:1 (45°)
A Pittsburgh joint is used in: - HVAC ductwork
The drain for a pressure relief valve on a water heater should be extended to: - The outside of the building
What is the minimum slope toward the drain of a shower pan? - 1/4" per foot (2%)
What is the diameter of #3 rebar? - 3/8"
If a vendor fails to provide an MSDS, you have the right to call: - Cal/OSHA or DOSH
When installing a door jamb, you need shims at: - Both hinge and strike sides, three on each side.
Which of the following is used to adhere vinyl floors?
- Epoxy cement
- Asphalt mastic
- Latex primer
- White glue - Epoxy cement 1 / 3
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When do you need bracing for a drywall wall? - Diagonal bracing is needed every 25' for any drywall wall.How should you clear the roots from a construction site? - Clear roots to 12" below grade.
Dividing watts by amps gives you: - Volts
The most frequent on-the-job roofing accidents are: - Falls
Which of the following is NOT a type of wood block flooring?
- Parquet
- Wood Mosaic
- Wood Tile
- All of the above. - Wood tile
Lightweight concrete is best used for:
- Curb and Gutter
- Second floor decking
- First floor slab on grade
- Footings - Second floor decking
The tool used to carry grout needed to patch a small hole is a:
- Hawk
- Poling board
- Spot board
- Mason's scutch - Spot Board
Which pipe is NOT appropriate for industrial wastes?
- Cast iron
- Schedule 40 ABS DWV
- Extra strength vitrified clay
- Copper - Copper
Where do you need a fire wall?
- Between a living room and a bedroom
- Between a bedroom and a bathroom
- Between a kitchen and a bath
- A separation wall between a dwelling and an attachment - A separation wall between a
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What is the minimum clearance between rough ground and untreated subfloor joists? - 18 inches Who may remove asbestos? - Contractor with Asbestos Certification on license.Which of the following is NOT likely to be found in significant proportions in granular soil?
- Gravel
- Sand
- Silt
- Clay - Clay
Stiles and rails are used on which of the following?
- Furred walls
- Roofs
- Windows
- Slabs - 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? - Too much water.
Metal concrete forms should be?
- Oiled
- Watered
- Placed against gravel
- Discarded after each use - Oiled
What does the R mean in a description of insulation? - Resistance
What kind of door would you install for someone with a disability?
- Automatic with minimum of 3 seconds to close
- Automatic with maximum of 5 seconds to open
- Manual with maximum of 8.5 pounds to operate
- Either A or C - Either A or C
Triple-walled metal chimney installations are regulated by: - ICC
ICC-IBC-IRC is the international code council. IBC is international building code commercial.IRC is the international residential code.
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