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100+ Free NV C-17 Lathing and Plastering Practice Questions

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2026 Statistics

Key Facts: NV C-17 Lathing and Plastering Exam

45 Q

Official Exam Questions

PSI Nevada Contractor CIB updated 3/25/2026

32 of 45 points

Passing Score

PSI Nevada Contractor CIB updated 3/25/2026

1.5 hours

Time Allowed

PSI Nevada Contractor CIB updated 3/25/2026

USD 95

PSI Exam Fee (one portion)

PSI Nevada Contractor CIB updated 3/25/2026

Closed Book

Book Policy

PSI Nevada Contractor CIB updated 3/25/2026

Nevada C-17 Lathing and Plastering Contractor Examination is the official NSCB/PSI closed book exam: 45 questions, 32 of 45 points, 1.5 hours, USD 95 (bulletin 270, updated 3/25/2026). Official delivery: English.

Sample NV C-17 Lathing and Plastering Practice Questions

Try these sample questions to test your NV C-17 Lathing and Plastering exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under OSHA 1926.451, what is the maximum distance from the face of the work allowed for scaffold platforms used for plastering and lathing?
A.14 inches
B.18 inches
C.24 inches
D.36 inches
Explanation: OSHA 1926.451(b)(3) generally limits the platform-to-face gap to 14 inches, but 1926.451(b)(3)(ii) raises that limit to 18 inches (46 cm) for plastering and lathing. The extra room lets the plasterer work a hawk and trowel or hang lath without crowding the wall. The 18-inch exception does not waive fall protection on open sides.
2What is the OSHA 1926.1153 permissible exposure limit (PEL) for respirable crystalline silica, as an 8-hour time-weighted average?
A.25 micrograms per cubic meter
B.50 micrograms per cubic meter
C.100 micrograms per cubic meter
D.250 micrograms per cubic meter
Explanation: OSHA 1926.1153 sets the construction PEL at 50 µg/m³ as an 8-hour TWA. Mixing sanded plaster, cutting cement board, and grinding stucco all generate respirable silica. The action level is 25 µg/m³; crossing it triggers exposure assessment and a written control plan.
3A plasterer gets wet hydrated lime in the eyes. What is the correct immediate first-aid action?
A.Neutralize the lime with a weak vinegar rinse, then seek care
B.Wipe the eyes dry and apply an antibiotic ointment
C.Flush with clean water for at least 15 minutes and get medical care
D.Cover both eyes with a dry dressing and wait for symptoms to fade
Explanation: Lime and portland cement are strongly alkaline (pH about 12 to 13) and keep burning as long as residue remains. ANSI Z358.1 practice, used to meet OSHA 1926.50(g), is an immediate 15-minute flush at an eyewash, then medical evaluation. Do not use acid to neutralize alkali in the eye.
4Why must plasterers wear impermeable gloves and wash cement or lime off the skin promptly?
A.Wet cement and lime are alkaline and cause chemical burns and dermatitis
B.Portland cement is an acid that etches skin like muriatic acid
C.Lime dust is only an inhalation hazard and does not injure skin
D.Gloves are required only when applying gypsum veneer plaster
Explanation: Portland cement and lime are caustic. Trapped moisture under gloves or clothing concentrates the alkali and produces cement burns and hexavalent-chromium dermatitis. Plastering Skills and OSHA HazCom both treat wet cement as a corrosive skin hazard. Wash exposed skin with clean water and change soaked clothing.
5OSHA 1926.451 requires supported scaffolds and their components to support their own weight plus at least how many times the maximum intended load?
A.2 times
B.3 times
C.4 times
D.6 times
Explanation: OSHA 1926.451(a)(1) requires scaffolds to carry their own weight and at least four times the maximum intended load without failure. Plastering scaffolds often hold mortar boards, lath bundles, and several workers, so the intended load must include material, not just body weight. Suspension-scaffold rigging has a separate 6-times factor that does not replace the 4-times rule for supported frames.
6When must a competent person inspect a plastering scaffold for visible defects?
A.Only when the scaffold is first erected
B.Before each work shift and after any event that could affect structural integrity
C.Once a week unless the weather changes
D.Only after a reported incident or citation
Explanation: OSHA 1926.451(f)(3) requires a competent person to inspect scaffolds before each work shift and after any occurrence that could affect structural integrity — impact, altered ties, or a storm. Daily mortar loading and rolling towers make that inspection especially important on C-17 jobs. A first-day-only check does not meet the standard.
7At what height above a lower level must each employee on a scaffold be protected from falling?
A.4 feet
B.6 feet
C.10 feet
D.15 feet
Explanation: OSHA 1926.451(g)(1) requires fall protection for each employee on a scaffold more than 10 feet (3.1 m) above a lower level. That is a different trigger than the 6-foot rule in Subpart M for unprotected sides of walking-working surfaces. Guardrails, a personal fall-arrest system, or both are used depending on scaffold type.
8Except for listed narrow-scaffold types, what is the minimum width of a scaffold platform or walkway under OSHA 1926.451?
A.18 inches
B.12 inches
C.24 inches
D.36 inches
Explanation: OSHA 1926.451(b)(2) requires scaffold platforms and walkways to be at least 18 inches (46 cm) wide unless a listed exception (ladder-jack, pump-jack, boatswain’s chair, or a demonstrated too-narrow space) applies. An 18-inch platform is also the same dimension as the plastering face-gap exception, which makes both numbers easy to confuse. Width and face gap are separate rules.
9OSHA 1926.50(g) requires suitable facilities for quick drenching or flushing of the eyes and body when workers may be exposed to which plastering materials?
A.Only solvent-based bonding agents
B.Injurious corrosive materials such as lime, cement, and acid cleaners
C.Gypsum joint compound after it has dried
D.Only materials listed as flammable on the SDS
Explanation: OSHA 1926.50(g) requires in-area drenching facilities wherever eyes or skin may contact injurious corrosives. Hydrated lime, quicklime, and wet portland cement meet that test, and older construction language specifically called out lime burns. An eyewash or drench shower must be reachable immediately, not stored on another floor.
10A crew will dry-mix bagged sanded stucco in a mortar mixer. Which silica-control approach satisfies OSHA 1926.1153?
A.Rely on a paper dust mask from a hardware store and keep mixing dry
B.Skip controls if the work lasts less than one hour
C.Use Table 1 wet methods or local exhaust, or assess exposure and keep it at or below the PEL
D.Open the bags indoors with no ventilation so dust stays on site
Explanation: 1926.1153 allows either full Table 1 controls for the listed task or an exposure assessment that keeps employees at or below 50 µg/m³. For mixing, that means water spray or a shrouded mixer with dust collection, plus the respirator Table 1 assigns when required, and a written exposure-control plan. A filtering facepiece that is not part of a 1910.134 program does not replace engineering controls.

About the NV C-17 Lathing and Plastering Exam

The Nevada C-17 Lathing and Plastering Contractor Examination is the official Nevada State Contractors Board trade examination administered by PSI Services LLC. The official exam has 45 scored questions. Passing is 32 of 45 points in 1.5 hours. The examination is closed book. Closed book. PSI lists Plastering Skills and Gypsum Construction Handbook as study-only references.. PSI lists USD 95 for one examination portion and USD 140 if taken with CMS; otherwise USD 95 per trade exam (Candidate Information Bulletin 270, updated 3/25/2026). NSCB requires a separate CMS examination for most new applicants, plus a USD 300 application fee and a USD 600 biennial license fee. This English-language MCQ bank is a study aid, not an official PSI form. It does not replace required trade experience, board approval, fingerprints, bonding, or the official examination.

Assessment

Closed Book computer-based multiple-choice. Closed book. PSI lists Plastering Skills and Gypsum Construction Handbook as study-only references.

Time Limit

1.5 hours

Passing Score

32 of 45 points

Exam Fee

USD 95 (PSI Services LLC (for the Nevada State Contractors Board))

NV C-17 Lathing and Plastering Exam Content Outline

11%

Safety

Safety (5 items)

24%

Surface Preparation

Surface Preparation (11 items)

11%

Drywall

Drywall (5 items)

22%

Application

Application (10 items)

20%

Base and Finish Coat

Base and Finish Coat (9 items)

11%

Sheet Metal

Sheet Metal (5 items)

How to Pass the NV C-17 Lathing and Plastering Exam

What You Need to Know

  • Passing score: 32 of 45 points
  • Assessment: Closed Book computer-based multiple-choice. Closed book. PSI lists Plastering Skills and Gypsum Construction Handbook as study-only references.
  • Time limit: 1.5 hours
  • Exam fee: USD 95

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

NV C-17 Lathing and Plastering Study Tips from Top Performers

1Distribute study time to the official bulletin 270 content outline (updated 3/25/2026)
2Use only the PSI-listed references; temporary tabs such as Post-it notes are prohibited
3Confirm NSCB experience documentation before scheduling with PSI
4This bank is an English-language MCQ study aid, not an official PSI form

Frequently Asked Questions

How many questions are on the Nevada C-17 Lathing and Plastering Contractor Examination?

The official PSI examination has 45 scored questions. Passing is 32 of 45 points within 1.5 hours (Candidate Information Bulletin 270, updated 3/25/2026).

How much does the NV C-17 exam cost?

PSI lists USD 95 for one examination portion. Two portions cost USD 140 only if the second portion is CMS. NSCB charges a separate USD 300 application fee and USD 600 biennial license fee.

Is the NV C-17 exam open book?

No. PSI lists this examination as closed book. Closed book. PSI lists Plastering Skills and Gypsum Construction Handbook as study-only references.

Do I still need the CMS examination?

CMS is the required Nevada business-and-law examination. Most new applicants must pass CMS and a trade examination for the requested classification. In most cases you will not retake an exam if you have actively served as a qualified employee in the same classification within the last four years.