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CSLB B LICENSE GENERAL CONTRACTOR FINAL EXAM
REVIEW QUESTINON WITH CORRECT ANSWERS
Unstable dry rock, angular gravel, sandy loam, and cohesive soils having compressive strengths greater than 0.5 and less than 1. 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:
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
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?
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.
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?
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
A waste water pipe, or DWV ( Drain-Waste- Vent), can have an outlet into any of the following EXCEPT a: A. Sanitary Drain B. Sewer C. Natural Pond D. Septic tank, seepage pit, or cesspool. Natural Pond How far above a swimming pool do power lines have to be? Power lines need to be a minimum of 18' above a swimming pool. An underground utility line is marked with paint. What is the minimum distance mechanical excavating equipment must stay from the paint mark? 24" is the minimum distance mechanical excavating equipment must stay from utility paint marks. What is the minimum cover for rebar in a concrete footing cast against and permanently exposed to earth?
What type water supply do you use for a water closet (W.C.)? A. Hot water B. Cold water C. Drain water D. Ground water Cold water The measuring unit of heating and cooling is: BTU is the unit of measurement for heating and cooling. The maximum height from which concrete should be poured from is: 6' is the maximum height in which concrete can be poured from. When you install iron bars on an emergency escape or rescue window, what is NOT required? A. A key lock to open from the outside B. Smoke detector C. The ability to open from the inside without a key D. None of the above is required A key lock to open from the outside. How many nails should be used to install a metal edge bead in a drywall job? Every 6" on both sides of the corner.
An ammeter is used in ________ with a(n) _________ circuit: A. series, energized B. series, de-energized C. parallel, energized D. paralle, de-energized An ammeter is used in series with an energized circut. What is the minimum girder for a 12' span under a deck? The minimum girder for a 12' span under a deck is a 4" x 8". Given that a sloped roof has an area of 1,160 sq ft, how many rolls of 15# felt are needed to cover the roof with one layer? 3 Rolls of 15# felt. A roll of 15# felt is roughly 430 sqft. How should you determine the perimeter dimension from blueprints? To determine the perimeter dimension from blue prints you should add first in one direction and then in the other direction. If you run into roots while digging a footing what should you do? Clear roots 12" down and away from footings. Before applying latex paint to the surface of an oil paint on wood trim, which procedure is appropriate? Wash the surface with TSP Who provides the required MSDS sheets for a job site? The vendor provides the MSDS for materials of a job site. What is the tolerance on effective depth when placing rebar in a slab 8" or less thick? On a slab LESS than 8" thick, the tolerance on effective depth is + or - 3/8". What is the best method for installing ceramic tile? A. On particleboard with thinnest adhesive B. On particleboard with construction adhesive C. On cement board with thinnest adhesive D. On cement board with construction adhesive On cement board with thinnest adhesive. Which type of header should be used for an exterior door with a width of 3' and a height of 6'-8"? 2" x 6" two each. What is the minimum height of a toilet seat from the floor? 15" is the minimum height of a toilet seat from the floor. Interior carpet should be installed with: Interior carpet should be installed with tackless strips.
Which of the following is a non-flammable adhesive? A. Release-type adhesive B. Alcohol-type adhesive C. Contact-type adhesive D. Padding cement Release-type adhesive is non-flammable. A stairway's maximum total riser and tread dimension would be: A. 1 riser + 2 treads = 22" B. 2 risers + 1 tread = 25" C. 2 treads + 1 riser = 25" D. Dependent on customer's request 2 risers + 1 tread = 25" A curb and threshold are not necessary in a shower: A. Where children use it B. For drain water C. When designed for wheel chair use D. Curbs and thresholds are always required A curb and threshold is not required when designed for wheel chair use. If the elevation of point A is 92.6', and the transit reading at point A is 3.4', then the elevation of the transit is: The elevation of the transit is 96'. Which of the following need NOT be grounded? A. Receptacle B. Junction box C. Light fixture D. Thermostat A thermostat is low voltage and would not need to be grounded. Which formula would you use to determine the quantity of drywall needed for a wall of a room? A. Ceiling height + wall length B. Ceiling height - wall length C. Ceiling height x wall length D. Ceiling height ÷ wall length Ceiling height x wall length.
What type of solder is used to join a copper water pipe? Lead free solder is used to join copper water pipes. Who must approve all plumbing fixtures before they are used? A local building official must approve all plumbing fixtures before they are used. When a ready-mix concrete truck arrives at the job site, how do you verify that the quantity and ratio of the concrete are correct? Ask the concrete contractor. An owner typically holds 10% retention from progress payments because? As protection against mechanics liens. The most important consideration in preparing a building site is? Drainage is the most important consideration in preparing a building site. What is the minimum size lumber to use in constructing horse scaffolding 5 ft in height? A horse scaffolding legs must be made of 2" x 4" lumber and a ledger made of 2" x 6" lumber. How long should tile set on an organic adhesive bed in order to cure? Tile should set on an organic adhesive bed for 24 hours to cure. What is the maximum height in feet that you can build a retaining wall without consulting a structural engineer? 3' is the highest you can build a retaining wall without consulting a structural engineer. What is the maximum height of a threshold for a door designed for disabled access? 1/2" is the maximum height of a threshold for a door designed for disabled access. Of the following, concrete would be poured against: A. Any wood siding B. Cedar or redwood siding only C. metal flashing D. Metal form material Metal form material The function of a Waler is? A Waler is a horizontal member used to align and brace concrete forms or piles. If the width of a door that swings TOWARDS a landing on a ramp is 36", what minimum length landing is required? A 78" landing is required for a 36" door that swings TOWARDS a landing. What are "as built" plants? As built plans are plans showing all changes and repairs.
Approximately, how many 4" x 4" ceramic tiles would you need to tile a 30" x 60" shower pan and three walls 5' high? Use 1/4" grout lines, assume no curb, and allow 15% for waste. A. 439 B. 574 C. 720 D. 800
If the width of a door that swings AWAY from a landing on a ramp is 36", what minimum length landing is required? A 60" landing is required for a 36" door that swings AWAY from a landing. Soldering work can be dangerous because of: Noxious gases For a building to be square, you need? Opposite walls need to be parallel and diagonals need to measure equally. What is the nailing pattern for installing shear wall paneling if it is not specified in the plans? 6" on the edges and 12" through the field. Paint-grade wood cabinets require? Sanding, priming, and finishing. What is the minimum distance from the side of a toilet to the wall, in a bathroom stall that meets side-transfer accessibility requirements? 32" is the minimum distance from the side of a toilet to the wall in a handicap bathroom stall. What color is water-resistant gypsum wallboard? Green or purple. What does watts divided by volts equal? Watts divided by volts will give you amps. What type of shoes should you wear on a roof with a 4:12 slope? Rubber-soled shoes should be warn on a slope of 4:12. According to Energy Efficiency Standards, general lighting in kitchens must have an efficacy of at least how many lumens per watt? Lighting in a kitchen must have at least 40 lumbers per watt. What type of hammer is best to use for drywall installation? Convex textured and round. When hardwood flooring is shipped to the site, you should? Put it in the room where it is to be installed and let it sit for a few days. What would you use around a pipe that penetrates the roof? Plastic cement.
Which of the following is a recommended method of installing a hardwood floor over a concrete slab? A. Float the floor B. Apply glue C. Use concrete nails D. Use staples Float the floor before installing concrete. When applying asphalt shingles, how far into the sheathing should you drive nails?
When notching and boring studs in NON- BEARING walls, you must not cut more than? 60% when boring, and 40% while notching. How soon should you pour concrete after you have mixed it without additives? Non additive concrete should be poured within 1/2 of mixing. Where do you nail metal valley flashing? Metal valley flashing should be nailed 1" from the outer edge. What is the maximum grade of a sidewalk? 5% is the maximum grade of a sidewalk. The best standard fire rating for a roof assembly is? Class A What should be done if Native American burial artifacts or remains are discovered while digging? Stop work immediately at the site and any nearby area reasonably suspected to have artifacts and remains and contact the County Coroner. What is a raked joint? A mortar joint that is compacted to a specific depth while the mortar is still green. What minimum clearance is required between a worker and high voltage electrical lines? 6" is the minimum clearance between a worker and high voltage electrical lines. What must be done if work has stopped for a year after the date the building permit was issued? You must obtain a new permit and pay the fee again. When installing Fiberglass insulation between floor joists, the insulation is attached with: When installing fiberglass insulation between floor joists, the insulation is attached with nails and wire. Furring channel refers to? Wood or metal strips that provide a base for fastening finish material. To get a smooth stucco finish you would use a? Trowel A collar beam is a? A horizontal member that ties opposite rafters together. How should you adjust the pitch of a solar collector mounted on a roof? Use cripples.
Which of the following is not a steel post? A. H Beam B. I Beam C. J Beam D. Round post A J beam is not a steel post. What tests are needed before installing a septic tank? Water table level, percolation test, and a soil type and strata. When installing a 3 - wire, single phase, 240 volt circuit that consists of white, red, and black wires, which would you connect to "hot? The red and black wires would be connected. You would affix a column or post to a floor in a building with? A metal connector. The safest way to handle asbestos is when it is what? Asbestos is safest to handle when it is wet. What is the minimum number of amps required to serve a 5,000 sq ft family residence where everything is run on electricity? 200 Amp panel. If it looks like rain, what should you do to a masonry wall that was recently constructed? Cover it with canvas. How do you know if a type of glass is classified as tempered? A tempered label is adhered to each piece. Which type of device is used to determine if there is a load balance on an electrical panel? An amp probe. The color of regular gypsum wallboard is? White Of the following, which material should NOT be used in building a skylight? A. Laminated glass B. Annealed glass C. Rigid plastic D. Tempered glass Annealed glass should not be used when building a skylight. How would you determine which is the best vapor barrier for a particular type of wood flooring? Consult the manufacturer's specifications.
Where do you install a vent flashing on an asphalt shingle roof? Between the shingles. On a new roof, asphalt shingles should be applied over? Underlayment When would you wet concrete masonry blocks? Never wet concrete masonry blocks. Which of the following is most important when digging a trench 6' deep that workers will enter? A. Erect barricades B. Post a sign indicating the depth of the trench C. Bracing on trench walls D. Fence around the deepest area of the trench Bracing on the trench walls. What is the recommended slope of a 4 - ft sidewalk?
Which of the following is an important and commonly used component of an exterior door in a residence? A. Weatherstripping B. Rigid insulation C. Smoke seal D. Silas kraft paper Weatherstripping. Where would you NOT need safety glazing? A. Dual glazing B. North-facing buildings C. New buildings D. When general contractor decides it is not necessary On dual glazing you would not need safety glazing. What is the minimum required compressive strength for a concrete slab on grade? For a concrete slab on grade 2,000 psi is the minimum required compressive strength. Which of the following meets the minimum requirement for a wood fire door? The minimum requirement for a wood fire door is 1 3/4" thick. How should you treat a first-degree burn? Flush with water and wrap loosely. When do you use a raked joint? When the plans call for a specific and even joint depth.
