CSLB B LICENSE GENERAL

CSLB B LICENSE GENERAL

CONTRACTOR EXAM QUESTIONS AND

ANSWERS 100% CORRECT

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

When installing a door jamb, you need shims at: - ANSWER-Both hinge and strike

sides, three on each side. 1 / 4

Which of the following is used to adhere vinyl floors?

• Epoxy cement
• Asphalt mastic
• Latex primer
• 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?

• Parquet
• Wood Mosaic
• Wood Tile
• All of the above. - ANSWER-Wood tile

Lightweight concrete is best used for:

• Curb and Gutter
• Second floor decking
• First floor slab on grade
• Footings - ANSWER-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 - ANSWER-Spot Board

Which pipe is NOT appropriate for industrial wastes?

• Cast iron
• Schedule 40 ABS DWV
• Extra strength vitrified clay
• Copper - ANSWER-Copper 2 / 4

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 - ANSWER-A separation

wall between a dwelling and an attachment.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?

• Gravel
• Sand
• Silt
• Clay - ANSWER-Clay

Stiles and rails are used on which of the following?

• Furred walls
• Roofs
• Windows
• 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?

• Oiled
• Watered
• Placed against gravel
• Discarded after each use - ANSWER-Oiled

What does the R mean in a description of insulation? - ANSWER-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 3 / 4

• Manual with maximum of 8.5 pounds to operate
• Either A or C - ANSWER-Either A or C

Triple-walled metal chimney installations are regulated by: - ANSWER-ICC

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: - ANSWER- You encounter an unfamiliar trade.When a stairway serves a public building, what is the minimum number of steps for which a handrail is required? - ANSWER-Two What is the minimum underlayment for asphalt shingles? - ANSWER-15 pounds How long should you wait before sealing new tile work? - ANSWER-2 weeks When do you install insulation? - ANSWER-After the electrical and plumbing are approved.When do you NOT need an exhaust fan in a bathroom? - ANSWER-When there is a window in the bathroom.What is a bush-hammer used for? - ANSWER-Roughen surface of hardened concrete.

When you say a wall is perfect it is: - ANSWER-Both plumb and straight.

The purpose of a batter board in concrete work is: - ANSWER-Support layout strings when location foundations.What is the difference between a hip jack rafter and a common rafter? - ANSWER-A 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? - ANSWER-As soon as the water sheen evaporates

When installing drywall screws you should:

• Countersink
• Drive just below the face of the board
• Leave slightly above the surface
• Use the highest torque setting - ANSWER-Drive just below the face of the board

without breaking the paper.Before placing tile with mastic, you should: - ANSWER-Seal the surface.

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