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Question 1. Which OSHA standard specifically addresses fall protection requirements for residential construction? A) 1926. B) 1926. C) 1926. D) 1926. Answer: C Explanation: OSHA 1926.502 outlines fall protection criteria for residential construction, including guardrails, personal fall arrest systems, and safety‑net requirements. Question 2. When interpreting a set of construction drawings, the scale “1/4” = 1’” indicates that: A) 1 inch on the drawing equals 4 inches on the jobsite B) 1/4 inch on the drawing equals 1 foot in reality C) 1 foot on the drawing equals 1/4 inch in reality D) 1 foot on the drawing equals 4 feet in reality Answer: B Explanation: “1/4” = 1’” means each quarter‑inch on the plan represents one foot of actual construction. Question 3. The most accurate method for establishing a true 90‑degree corner on a floor framing layout is: A) Using a speed square on the edge of a board B) Measuring 3‑ 4 ‑5 triangle dimensions on the joist line C) Setting a mason’s line between two points D) Using a carpenter’s level on the wall studs Answer: B Explanation: The 3‑ 4 ‑5 triangle (or multiples) creates a mathematically exact right angle, essential for precise framing. Question 4. In a typical residential floor system, the primary load‑bearing member that spans between walls is called a:
A) Header B) Joist C) Rafter D) Stud Answer: B Explanation: Joists are horizontal members that support floor loads and transfer them to beams or load‑bearing walls. Question 5. When repairing a water‑damaged stud, the code‑compliant method for replacement requires: A) Cutting the stud out and installing a new one of the same species and grade, fastened with 16 ‑d × 3 in. nails spaced 6 in. on center B) Reinforcing the existing stud with metal plates only C) Installing a sister stud without removing the damaged wood S) Using epoxy to fill the rot and re‑nailing the original stud Answer: A Explanation: The IBC and NV building code require removal of compromised wood and replacement with material of equal strength, fastened per the prescribed schedule. Question 6. Nevada’s seismic zone classification for most of the state is: A) Zone 0 – No seismic risk B) Zone 1 – Low risk C) Zone 2 – Moderate risk D) Zone 3 – High risk Answer: C Explanation: The majority of Nevada falls within Seismic Zone 2, requiring shear walls or bracing per the state‑adopted IBC amendments. Question 7. The minimum spacing for balusters on a residential deck guardrail in Nevada is: A) 3 in. on center
B) 4 in. on the sill and 2 in. on each side C) 6 in. on the sill and 4 in. on each side D) 1 in. on all sides Answer: C Explanation: The IBC and manufacturer guidelines call for flashing tape extending at least 6 in. over the sill and 4 in. up the jambs to ensure water drainage. Question 11. The primary purpose of a construction adhesive when installing base cabinets is to: A) Replace all mechanical fasteners B) Provide additional shear resistance and reduce vibration C) Seal the cabinet to the wall for waterproofing D) Allow the cabinets to be moved easily after installation Answer: B Explanation: Adhesive supplements nails or screws by adding shear capacity and minimizing movement, but it does not replace mechanical fasteners. Question 12. For a crown molding with a 38° spring angle, the miter saw should be set to: A) 31° on each side B) 38° on each side C) 45° on each side D) 30° on one side and 38° on the other Answer: A Explanation: The spring angle is the angle between the back of the molding and the wall. For a 38° spring angle, the miter cut is 31° (90°‑ 38 °) on each side. Question 13. According to the Nevada Revised Statutes Chapter 624, a C‑3A contractor must maintain a minimum surety bond of: A) $5, B) $10, C) $15,
D) $25,
Answer: C Explanation: NRS 624.050 requires a C‑3A (Carpentry & Repairs) contractor to post a $15,000 bond as a condition of licensure. Question 14. Which activity is outside the authorized scope of a C‑3A Carpentry and Repairs license in Nevada? A) Installing interior trim B) Repairing a load‑bearing wall stud C) Installing a residential HVAC duct system D) Replacing a deck joist Answer: C Explanation: HVAC ductwork is classified under mechanical trades; a C‑3A license does not permit mechanical system installation. Question 15. Under Nevada State Contractors Board (NSCB) regulations, a contractor’s advertisement that includes a “fixed price” must also contain: A) The contractor’s license number and the date the estimate was prepared B) Only the contractor’s phone number C) A disclaimer that the price is subject to change without notice D) The contractor’s social security number for verification Answer: A Explanation: NSCB rules require that any advertised fixed price be accompanied by the contractor’s license number and the date of the estimate to prevent deceptive practices. Question 16. A construction contract in Nevada must include a provision for: A) A “no‑liability” clause protecting the contractor from all defects B) A detailed payment schedule with dates or milestones C) A clause stating the contractor can terminate at any time without cause D) Only the total contract amount, without breakdowns
Explanation: NRS 108.150 requires the preliminary notice to be served within 45 days of first furnishing labor or materials to preserve lien rights. Question 20. Which of the following is not considered a “lienable” item under Nevada Mechanics’ Lien Law? A) Labor performed on a residential remodel B) Materials supplied for the remodel C) Architectural design services provided by a licensed architect D) Equipment rental fees for the remodel Answer: C Explanation: Professional design services are excluded from lienable work; only labor, materials, and equipment directly related to construction are covered. Question 21. Under Nevada law, an employee who works more than 40 hours in a week must be paid overtime at: A) 1.5 times the regular rate for all hours over 40 B) Double the regular rate for all hours over 40 C) 1.25 times the regular rate for all hours over 40 D) No overtime is required in Nevada Answer: A Explanation: Nevada follows the federal Fair Labor Standards Act, requiring 1.5× pay for hours worked beyond 40 in a workweek. Question 22. The Nevada Workers’ Compensation law requires a contractor to provide coverage for: A) Only employees who work more than 20 hours per week B) All employees, regardless of hours, unless the contractor is a sole proprietor with no employees C) Only subcontractors hired directly by the contractor D) Only full‑time employees with a salary above $30, Answer: B
Explanation: Nevada law mandates coverage for all employees; sole proprietors without employees may be exempt. Question 23. A contractor’s Commercial General Liability (CGL) policy must have a minimum aggregate limit of: A) $250, B) $500, C) $1,000, D) $2,000, Answer: C Explanation: NSCB requires a minimum $1,000,000 aggregate limit for CGL insurance for licensed contractors. Question 24. In construction accounting, the accrual method records revenue when: A) Cash is actually received from the client B) The work is performed or the invoice is issued, regardless of cash receipt C) The project is completed, regardless of invoicing D) The contractor decides to recognize it at year‑end Answer: B Explanation: Accrual accounting recognizes revenue when earned (work performed or invoice issued), not when cash is received. Question 25. Nevada state law requires contractors to retain project records for a minimum of: A) 1 year B) 3 years C) 5 years D) 7 years Answer: C Explanation: NRS 624.340 mandates that contractors keep all financial, employment, and project documentation for at least five years.
A) Cut the pocket opening wider than the door slab, then shim and secure the slab with screws through the pocket wall B) Install the door slab first, then frame the pocket around it C) Use a metal track system without any framing adjustments D) Install the door on hinges like a swing door and then slide it into the pocket after installation Answer: A Explanation: Pocket doors require a larger rough opening; the slab is placed in the pocket, shimmed, and secured with screws through the pocket wall to maintain alignment. Question 30. For a stair with a total rise of 8 ft (96 in.) and a required maximum riser height of 7 in., the minimum number of risers is: A) 12 B) 13 C) 14 D) 15 Answer: C Explanation: 96 in ÷ 7 in = 13.71, rounded up to 14 risers to stay within the maximum height. Question 31. According to the Nevada Residential Code, the minimum headroom clearance for a stairway is: A) 6 ft 6 in. B) 6 ft 8 in. C) 7 ft D) 7 ft 6 in. Answer: B Explanation: The code adopts a minimum headroom of 6 ft 8 in. measured vertically from the nosing to the underside of the stair tread. Question 32. When installing a pressure‑treated ledger board for a deck, the proper fastener spacing to comply with the IBC is: A) No more than 12 in. on center for nails, 16 in. for screws
B) No more than 6 in. on center for nails, 12 in. for screws C) No more than 24 in. on center for any fastener D) No more than 8 in. on center for both nails and screws Answer: B Explanation: Pressure‑treated ledger boards require tighter spacing—maximum 6 in. for nails and 12 in. for screws—to ensure adequate withdrawal resistance. Question 33. The primary purpose of a vapor retarder behind interior gypsum board in a Nevada climate zone is to: A) Prevent water infiltration from the exterior B) Reduce moisture migration from interior humid air into the wall cavity C) Provide structural reinforcement to the wall D) Increase the fire rating of the assembly Answer: B Explanation: Vapor retarders limit the diffusion of interior moisture into colder wall cavities, reducing condensation risk. Question 34. Which of the following is the correct method for anchoring a handrail to a stair stringer when the handrail height must be 36 in. above the nosing? A) Drill a 1‑in. hole through the stringer and insert a 1‑in. lag screw directly into the tread B) Use a 2‑in. wood screw set at a 30° angle into the stringer, then attach the handrail with a metal bracket C) Install a 3‑in. threaded rod through the stringer and secure with a metal flange at the required height D) Fasten the handrail with 1‑in. finish nails only Answer: B Explanation: Angled wood screws provide strong pull‑out resistance; a metal bracket then ensures the handrail remains at the exact 36‑in. height. Question 35. When using a pneumatic nail gun for framing, the minimum required personal protective equipment (PPE) includes: A) Safety glasses only
C) Epoxy resin D) Hot‑melt glue Answer: A Explanation: Polyurethane‑based construction adhesives provide strong bonding, flexibility, and moisture resistance suitable for solid‑surface countertops. Question 39. When installing OSB sheathing on exterior walls, the required minimum nail spacing for 7/16‑in. thick panels is: A) 6 in. on edges, 12 in. in field B) 8 in. on edges, 16 in. in field C) 10 in. on edges, 20 in. in field D) 12 in. on edges, 24 in. in field Answer: B Explanation: The IBC specifies 8 in. spacing on panel edges and 16 in. in the field for 7/16‑in. OSB to ensure adequate shear transfer. Question 40. Which of the following best describes the “dry‑wall taping” technique required for a seamless joint in a high‑traffic hallway? A) Applying a single layer of paper tape with joint compound, sanding once B) Using fiberglass mesh tape with three coats of joint compound and sanding between coats C) Installing metal corner bead only, no tape needed D) Applying a self‑adhesive vinyl tape and finishing with a single skim coat Answer: B Explanation: Fiberglass mesh tape with multiple coats and sanding yields a durable, crack‑resistant joint suitable for high‑traffic areas. Question 41. In Nevada, the statutory interest rate for late payment of a mechanics’ lien claim is: A) 5% per annum B) 6% per annum C) 8% per annum
D) 10% per annum Answer: C Explanation: NRS 108.180 sets the interest on unpaid lien amounts at 8% per year. Question 42. Which of the following is the correct minimum thickness for a fire‑rated (1‑hour) exterior wall sheathing in a single‑family home in Nevada? A) 1/2‑in. gypsum board B) 5/8‑in. plywood or OSB C) 1‑in. solid lumber D) 1/4‑in. rigid foam insulation Answer: B Explanation: A 5/8‑in. plywood or OSB panel provides the required structural and fire‑rating performance for a 1‑hour assembly. Question 43. When performing a field layout for a wall that must be perfectly square, the carpenter should: A) Measure the diagonal from corner to corner and adjust until both diagonals are equal B) Use a laser level to set the height only C) Rely on the architect’s drawing scale without verification D) Use a framing square only on the bottom plate Answer: A Explanation: Equal diagonals in a rectangle confirm that the corners are square; this is the most reliable method for field verification. Question 44. The most common cause of premature failure of a deck’s ledger attachment is: A) Using stainless‑steel lag screws B) Not drilling pilot holes before installing lag screws C) Using a double‑sided construction adhesive on the ledger D) Attaching the ledger to a concrete slab instead of a rim joist Answer: B
Question 48. The Nevada Administrative Code (NAC) requires that a contractor’s certificate of liability insurance must be: A) Issued by a company with a minimum $500,000 net worth B) Valid for at least 30 days beyond the project completion date C) Signed only by the contractor’s employee D) Filed with the local fire department Answer: B Explanation: NAC 624.050 mandates that the liability insurance certificate remain in effect for at least 30 days after project completion. Question 49. When calculating board feet for a 2 × 6 lumber piece that is 12 ft long, the correct formula yields: A) 12 board feet B) 16 board feet C) 24 board feet D) 32 board feet Answer: C Explanation: Board feet = (Thickness in inches × Width in inches × Length in feet) ÷ 12 → (2 × 6 × 12) ÷ 12 = 12 × 2 = 24 board feet. Question 50. A contractor who wishes to subcontract a portion of a C‑3A job must: A) Obtain a separate C‑3A license for each subcontractor B) Ensure the subcontractor holds a valid C‑3A license or a higher‑class license that includes carpentry work C) Can use any subcontractor regardless of licensing, as long as the primary contractor is licensed D) Must not subcontract any portion of the work under any circumstances Answer: B Explanation: Nevada law requires all subcontractors performing licensed work to hold the appropriate license; a higher‑class license (e.g., C‑4) also satisfies the requirement.
Question 51. The minimum required height for a guardrail on a residential deck in Nevada is: A) 30 in. B) 36 in. C) 42 in. D) 48 in. Answer: C Explanation: The IBC and Nevada Residential Code specify a minimum guardrail height of 42 in. measured from the walking surface. Question 52. Which of the following statements about LVL (Laminated Veneer Lumber) is correct? A) LVL is stronger in tension than in compression B) LVL can be used for both beams and joists without any design limitations C) LVL is manufactured by bonding thin wood veneers with adhesive under heat and pressure D) LVL must be installed with a minimum moisture content of 20% Answer: C Explanation: LVL is produced by laminating thin wood veneers together with structural adhesives, creating a product with uniform strength. Question 53. When applying a silicone sealant around a newly installed exterior window, the sealant should be: A) Applied in a continuous bead at least 1/4 in. wide and tooled smooth B) Applied only at the top of the window to allow drainage C) Applied with a caulking gun set to “burst” mode for maximum pressure D) Applied in multiple thin lines spaced 1 in. apart Answer: A Explanation: A continuous, properly tooled bead ensures a watertight seal and accommodates joint movement. Question 54. The correct way to determine the required number of joists for a 12‑ft span with 16 ‑in. on‑center spacing is:
D) Drill multiple holes through the stud and pull with a chain Answer: B Explanation: Cutting at the plates isolates the stud, allowing safe removal while preserving the integrity of surrounding framing. Question 58. A conditional lien release becomes effective: A) Immediately upon signing, regardless of payment status B) Only after the contractor receives the payment specified in the release C) When the owner signs a separate agreement D) After the project is completed, even if payment is pending Answer: B Explanation: Conditional releases are contingent upon actual receipt of payment; they protect the contractor’s lien rights until funds are received. Question 59. For a residential deck that is 6 ft above grade, the required post embedment depth into the footings, according to the IBC, is: A) 12 in. B) 18 in. C) 24 in. D) 30 in. Answer: C Explanation: The IBC requires a minimum embedment of 12 in. plus 1/2 the post diameter; for a typical 4 ‑in. post, this results in about 24 in. total embedment. Question 60. When installing a fire‑rated door in a commercial building, the door assembly must be: A) Painted with fire‑resistant paint only B) Secured with a minimum of three 1‑in. fire‑rated screws per hinge leaf and a fire‑rated latch hardware set C) Left unhinged to allow the fire to pass through D) Installed with a single hinge to reduce heat transfer
Answer: B Explanation: Fire‑rated doors require specific hardware and fastening patterns to maintain the fire resistance rating. Question 61. The Nevada Mechanics’ Lien deadline for filing a claim after the last day of furnishing labor or materials is: A) 30 days B) 45 days C) 60 days D) 90 days Answer: C Explanation: NRS 108.160 gives a contractor 60 days from the last furnishing date to record a lien. Question 62. Which type of engineered wood is most appropriate for a long, unobstructed ceiling span where depth must be limited to 8 in.? A) Traditional dimensional lumber B) I‑joist with 8‑in. depth C) Laminated strand lumber (LSL) beam D) Glued laminated timber (glulam) with 8‑in. depth Answer: B Explanation: I‑joists provide high strength‑to‑depth ratios, making an 8‑in. deep I‑joist suitable for long ceiling spans. Question 63. In Nevada, the minimum workers’ compensation coverage amount for a contractor with 5 employees is: A) $500,000 per employee B) $1,000,000 per employee C) $5,000,000 total for the company D) No minimum; coverage is optional Answer: B
