Download CSLB General Contractor Exam Q&A 2025-2026 and more Exams Building and Prefabrication in PDF only on Docsity!
CSLB B LICENSE GENERAL CONTRACTOR EXAM
2025 - 2026|ACTUAL 330Qs&As|ALREADY 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.
C. Wood Tile D. All of the above. Wood tile Lightweight concrete is best used for: A. Curb and Gutter B. Second floor decking C. First floor slab on grade D. Footings 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 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 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 A separation wall between a dwelling and an attachment. What is the minimum clearance between rough ground and untreated subfloor joists? 18 inches Who may remove asbestos?
What does a high slump test indicate? Too much water. Metal concrete forms should be? A. Oiled B. Watered C. Placed against gravel D. 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? 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
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. If you are a general contractor, you should call a specialty contractor when: 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? Two What is the minimum underlayment for asphalt shingles? 15 pounds How long should you wait before sealing new tile work?
What is the difference between a hip jack rafter and a common rafter? 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? As 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 Drive just below the face of the board without breaking the paper. Before placing tile with mastic, you should: Seal the surface. At an excavation, an Underground Service Alert (U.S.A) marking on the dirt that uses red paint or chalk means:
Electric power How many diameters is the minimum lap (overlap) between sections of rebar in reinforced masonry? A. 7 B. 12 C. 24 D. 30 30 diameters What is the minimum length of a handrail extension that is required for a stairway? 12" When may a contractor work alone on a roof at a construction site? Never A Freon recovery system is required when:
Where should the first upper cabinet be installed? At an inside corner Cemented soil: Cannot be crushed into individual particles with fingers Which tool is best for measuring odd angles in an existing structure? Bevel square From the following list, the best choice of woods for exterior carpentry are: A. Redwood and bald cypress B. Spruce and fir C. Pine and sugar maple D. Fir and hemlock Redwood and bald cypress If a contractor discovers damaged utilities when starting a job, he should:
Call the utility department involved. Type-C soils have a compression strength of no more than 0.5 tsp. Which of the following would not be classified as a Type-C soil? A. Rounded gravel B. Crushed rock C. Sand or loamy sand D. Water-logged soil or submerged unstable rock Crushed rock What is the correct exposure for typical hip tiles? 6" Hip and ridge tiles are always installed with a 6" exposure. Which type of window requires tempered glass? A. Skylight B. Sliding Glass Door C. Exposed top edge is less than 36" from the floor D. Exposed bottom edge is more than 18" from the floor Sliding glass door.
In electrical work, the green wire is the: Grounding conductor What is the longest length ladder that Cal/OSHA approves? 44' is the longest ladder Cal/OSHA approves Under what condition can you add one additional layer to existing asphalt shingles on a roof? If the roof is less than three layers. How should a residential water heater be protected from earthquakes? It should be attached to a wall. You would use a 1.5 GPM fixture when: You want to conserve water The best way to handle an I-beam is with a: Nylon strap
To determine if a wall is plumb, us a: Level and straight edge The minimum required thickness for tempered glass used in residential shower doors is: 1/8 is the minimum required thickness How many board feet are in a 5"D x 6"W x 20'L beam? 50 board feet. Thickness X Width X Length in Inches dived by 144. When nailing roofing, the railheads: A. Should be brought almost to the surface of the shingle B. Should not exert any pressure on the roofing C. Should never be overdriven D. All of the above All of the above
Trowel When preparing plaster for a ceiling, which quantity is most important to monitor in the mixture? Water In a work space, travel distance to a fire extinguisher must not be more than how many feet? 75' is the maximum travel distance to a fire extinguisher in a work space. What sort of subfloor material would you use if the edges meet over the floor joist? Plywood In framing, a look out is a(n): Cantilevered beam When would you wet brick masonry? Before building a brick wall in warm weather.
Which of the following does NOT need a fixed lighting outlet? A. Bedroom ceiling B. Furnace space and attic C. Stairway D. Exterior door Exterior door How many days should you wait between the brown coat and the finish coat when plastering? 7 days between BROWN coat and the FINISH coat. How many days in advance must you notify authorities before digging an excavation 5' deep into which a worker must go? 2 days How do you decide which metal bracket to use? Per specification in the construction documents.
