CSLB B LICENSE GENERAL CONTRACTOR EXAM, Questions with accurate answers. 100% verified

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CSLB B LICENSE GENERAL CONTRACTOR EXAM, Questions with accurate answers. 100% verified If unused mortar stiffens due to hydration of cement, what must you do? - ✔✔Discard the mortar What min... imum 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? A. Epoxy cement B. Asphalt mastic C. Latex primer D. White glue - ✔✔Epoxy cement 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? A. Parquet B. Wood Mosaic 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? - ✔✔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 - ✔✔Clay Stiles and rails are used on which of the following? A. Furred walls B. Roofs C. Windows D. 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? 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? - ✔✔2 weeks When do you install insulation? - ✔✔After the electrical and plumbing are approved. When do you NOT need an exhaust fan in a bathroom? - ✔✔When there is a window in the bathroom. What is a bush-hammer used for? - ✔✔Roughen surface of hardened concrete. When you say a wall is perfect it is: - ✔✔Both plumb and straight. The purpose of a batter board in concrete work is: - ✔✔Support layout strings when location foundations. 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: A. Replacing a burnt out rotor in a hermetic unit B. Overhauling a rooftop A/C unit C. Scrapping an old refrigeration unit D. All of the above - ✔✔All of the above Which of the following would you use to install roofing tiles? A. Slathers stake B. Any roofing tool C. Roofers hatchet D. Masking tape - ✔✔A slathers stake A slathers stake looks like the head of a hammerhead shark. The head forms a T with the shaft, but the head is slightly bent. It provides a flat, straight edge for cutting and trimming your slate. When determining the layout of a residential building, the most important element to take into account is the: - ✔✔Property lines 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. The correct sequence for installing vapor barrier is: A. Siding-shear panel-paper B. Shear panel-paper-siding C. Paper-siding-shear panel D. Shear panel-siding-paper - ✔✔Shear panel-paper-siding What is the slope in degrees of a roof with a rise of 12 and a run of 12? A. 22.5 degrees B. 45.0 degrees C. 50.0 degrees D. 90.0 degrees - ✔✔45 degrees. How deep must electrical be in a public area if the conduit is PVC and there is no vehicle traffic? - ✔✔18" 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 Soldering of a copper pipe fitting is completed when: - ✔✔Solder appears all around the joint. What is the maximum spacing of single nails in a single layer of drywall on the ceiling? - ✔✔7" is the maximum spacing of single nails in a single layer of a drywall ceiling. In construction, a hazardous area should be marked with what color tape? - ✔✔Yellow tape should be used to mark off a hazardous area. Green board would be used for? - ✔✔Bathroom walls or possible wet locations. The minimum size vent for a water closet is: - ✔✔1 1/2" minimum vent size for a water closet. Which tool would you use to apply mortar 1/2" thick? - ✔✔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. How would you best determine if a soil is expansive? - ✔✔Have the soil tested Where would be the best place to look for a roof leak? - ✔✔Valley flashings are the best place to look for a roof leak. What is the purpose of a condenser line for a furnace vent fan? - ✔✔Help remove accumulated water in the vent. What is a register used for? - ✔✔A register is used to supply air. The safety valve on a portable air compressor should be popped at least: - ✔✔The safety valve on a portable air compressor should be popped at least weekly. Which of the following materials is acceptable for interior gas lines? A. Copper B. PVC C. Iron or steel D. ABS - ✔✔Iron or steel is acceptable for interior gas lines. If a circular slab is a 45' in diameter, how much surface area does it cover? - ✔✔Over 1,500 feet What material do you use to clean brushes and spills when painting with alkyd (oil) paints? - ✔✔Paint thinner is to be used to clean up oil based paints and stains. Fiberglass insulation for walls should be attached to: A. The interior of the studs B. The face of the studs C. The top and bottom of the studs D. There is no need to attach - ✔✔There is no need to attach [Show More]

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