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100+ Free NV C-15A Roofing Practice Questions

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2026 Statistics

Key Facts: NV C-15A Roofing Exam

50 Q

Official Exam Questions

PSI Nevada Contractor CIB updated 3/25/2026

38 of 50 points

Passing Score

PSI Nevada Contractor CIB updated 3/25/2026

2 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

Open Book

Book Policy

PSI Nevada Contractor CIB updated 3/25/2026

Nevada C-15A Roofing Contractor Examination is the official NSCB/PSI open book exam: 50 questions, 38 of 50 points, 2 hours, USD 95 (bulletin 270, updated 3/25/2026). Official delivery: English and Spanish.

Sample NV C-15A Roofing Practice Questions

Try these sample questions to test your NV C-15A Roofing exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under OSHA 1926.501, at what height above a lower level must employees doing roofing work be protected from falling?
A.4 feet (1.2 m)
B.6 feet (1.8 m)
C.10 feet (3.0 m)
D.15 feet (4.6 m)
Explanation: OSHA 1926.501(b)(10) and (b)(11) require fall protection for roofing work on unprotected sides and edges 6 feet (1.8 m) or more above lower levels. The 4-foot trigger is the general-industry walking-working-surface rule, not construction roofing.
2How does OSHA 1926.500 define a low-slope roof for fall-protection purposes?
A.A roof sloped 2:12 or less
B.A roof sloped less than or equal to 4:12
C.A roof sloped less than 3:12
D.Any roof that drains to internal drains
Explanation: OSHA 1926.500 defines a low-slope roof as a roof having a slope less than or equal to 4 in 12 (vertical to horizontal). Warning-line systems and the safety-monitor options in 1926.501(b)(10) apply only on those roofs. A roof steeper than 4:12 is a steep roof and needs conventional fall protection.
3What work does NAC 624.320 authorize under Nevada C-15A Roofing?
A.Siding and weatherstripping for internal weather control, plus roofing
B.Installation, application, alteration, and repair of watertight roofing materials, including photovoltaic roof tiles that replace roofing
C.Roofing plus installation of PV conduits, inverters, batteries, and electrical connections
D.Any C-15 siding, insulation, or waterproofing work without a separate subclassification
Explanation: NAC 624.320(2)(a) limits C-15A to watertight and weatherproof roof materials such as asphalt, pitch, tar, felt, flax, shakes, shingles, aluminum, tile, slate, urethane, and photovoltaic roof tiles that serve in place of other roofing. It expressly excludes siding and devices such as stripping for internal weather control, and it does not authorize conduits, inverters, batteries, or electrical connections.
4When mechanical equipment is not being used, how far from the roof edge must a warning line be erected on a low-slope roof?
A.Not less than 4 feet (1.2 m)
B.Not less than 6 feet (1.8 m)
C.Not less than 10 feet (3.1 m)
D.Not less than 15 feet (4.6 m)
Explanation: OSHA 1926.502(f)(1)(i) requires the warning line to be erected not less than 6 feet (1.8 m) from the roof edge when mechanical equipment is not being used. The 10-foot dimension applies only on the edge perpendicular to mechanical-equipment travel.
5A gravel spreader is traveling parallel to a low-slope roof edge. How far back must the warning line be from the edge that is perpendicular to the machine's travel?
A.4 feet (1.2 m)
B.6 feet (1.8 m)
C.10 feet (3.1 m)
D.15 feet (4.6 m)
Explanation: OSHA 1926.502(f)(1)(ii) sets two distances when mechanical equipment is used: not less than 6 feet from the edge parallel to travel, and not less than 10 feet from the edge perpendicular to travel. The extra room on the perpendicular edge keeps the machine from pushing workers or material over the side.
6What height range does OSHA 1926.502(f) require for a warning line, including sag?
A.No less than 21 inches and no more than 28 inches
B.No less than 34 inches and no more than 39 inches
C.No less than 39 inches and no more than 45 inches
D.A constant 42 inches with no sag allowed
Explanation: OSHA 1926.502(f)(2)(ii) requires the rope, wire, or chain to be rigged so its lowest point, including sag, is no less than 34 inches and its highest point is no more than 39 inches above the walking/working surface. That is lower and tighter than a guardrail top rail.
7On which low-slope roof may a safety-monitoring system be used by itself, without a warning line?
A.Any low-slope roof if a competent person says conventional protection is expensive
B.A roof 50 feet (15.25 m) or less in width
C.A roof 100 feet or less in either plan dimension
D.A steep roof between 4:12 and 6:12
Explanation: OSHA 1926.501(b)(10) allows a safety-monitoring system alone only on low-slope roofs 50 feet (15.25 m) or less in width (see Appendix A to Subpart M). Wider roofs need a warning line plus a second system, or conventional protection. Cost alone does not justify dropping the warning line.
8Which fall-protection option is NOT allowed for roofing work on a steep roof (slope greater than 4:12) 6 feet or more above a lower level?
A.Guardrail systems
B.Safety net systems
C.Personal fall-arrest systems
D.A warning-line system combined with a safety monitor
Explanation: OSHA 1926.501(b)(11) requires conventional systems on steep roofs: guardrails, safety nets, or personal fall arrest. Warning lines and safety monitors are low-slope tools under 1926.501(b)(10). On a 6:12 or 8:12 roof those administrative systems are not a lawful substitute.
9Which set of warning-line hardware rules matches OSHA 1926.502(f)?
A.Flagged at 10-foot intervals, 200-pound line tensile strength, stanchions that resist 200 pounds
B.Flagged at not more than 6-foot intervals, line tensile strength of at least 500 pounds, stanchions that resist 16 pounds without tipping
C.Unflagged cable is acceptable if it is yellow, 5,000-pound tensile strength, stanchions that resist 5,000 pounds
D.Flagged only at corners, 50-pound line, traffic cones used as stanchions
Explanation: OSHA 1926.502(f)(2) requires high-visibility flags at not more than 6-foot intervals, a line tensile strength of at least 500 pounds, and stanchions that, after the line is attached, resist a 16-pound horizontal force without tipping toward the edge. Those numbers are unique to warning lines; do not borrow PFAS or guardrail strengths.
10A portable extension ladder serves a 16-foot eave. Using OSHA's 4:1 angle, what is the approximate horizontal distance from the wall to the ladder feet, and how far must the side rails extend above the eave?
A.2 feet out and 2 feet above
B.4 feet out and at least 3 feet above
C.8 feet out and flush with the eave
D.16 feet out and 6 feet above
Explanation: OSHA 1926.1053(b)(5)(i) sets the portable-ladder angle so the base is about one-quarter of the working length from the top support — a 4:1 pitch. For a 16-foot eave that is about 4 feet out. Section 1926.1053(b)(1) requires the side rails to extend at least 3 feet above the upper landing unless a grab rail is provided.

About the NV C-15A Roofing Exam

The Nevada C-15A Roofing Contractor Examination is the official Nevada State Contractors Board trade examination administered by PSI Services LLC. The official exam has 50 scored questions. Passing is 38 of 50 points in 2 hours. The examination is open book. International Building Code, 2018 (allowed in center). 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. PSI also offers this examination in Spanish; this bank is an English-language MCQ study adaptation, not an official translation. It does not replace required trade experience, board approval, fingerprints, bonding, or the official examination.

Assessment

Open Book computer-based multiple-choice. International Building Code, 2018 (allowed in center)

Time Limit

2 hours

Passing Score

38 of 50 points

Exam Fee

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

NV C-15A Roofing Exam Content Outline

10%

Safety

Safety (5 items)

14%

Roofing Substrates

Roofing Substrates (7 items)

34%

Steep Roofing

Steep Roofing (17 items)

8%

Roofing Repairs

Roofing Repairs (4 items)

12%

Elastomeric Roofing

Elastomeric Roofing (6 items)

14%

Built-up Bituminous Roofing

Built-up Bituminous Roofing (7 items)

4%

Sheet Metal and Flashing

Sheet Metal and Flashing (2 items)

4%

Photovoltaic Systems

Photovoltaic Systems (2 items)

How to Pass the NV C-15A Roofing Exam

What You Need to Know

  • Passing score: 38 of 50 points
  • Assessment: Open Book computer-based multiple-choice. International Building Code, 2018 (allowed in center)
  • Time limit: 2 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-15A Roofing 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-15A Roofing Contractor Examination?

The official PSI examination has 50 scored questions. Passing is 38 of 50 points within 2 hours (Candidate Information Bulletin 270, updated 3/25/2026).

How much does the NV C-15A 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-15A exam open book?

Yes. PSI lists this examination as open book. International Building Code, 2018 (allowed in center)

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.