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Key Facts: NV C-4E Drywall Exam

20 Q

Official Exam Questions

PSI Nevada Contractor CIB updated 3/25/2026

70%

Passing Score

PSI Nevada Contractor CIB updated 3/25/2026

1 hour

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-4E Drywall Contractor Examination is the official NSCB/PSI open book exam: 20 questions, 70% (14 of 20 points), 1 hour, USD 95 (bulletin 270, updated 3/25/2026). Official delivery: English.

Sample NV C-4E Drywall Practice Questions

Try these sample questions to review concepts for the NV C-4E Drywall exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under NAC 624.220, what work does Nevada subclassification C-4E Drywall authorize?
A.Painting and the application of wallcovering only
B.The erection of structural steel and load-bearing wood framing
C.The installation and coating of gypsum wallboard and sheathing, including suspended ceilings made of gypsum wallboard
D.The installation of ceramic tile and swimming-pool coping
Explanation: NAC 624.220(2)(e) defines C-4E as the installation and coating of gypsum wallboard and sheathing, including a system of suspended ceilings made of gypsum wallboard. C-4E sits under the C-4 painting-and-decorating family but is a drywall hanging and coating specialty, not a painting or structural-framing license.
2Per IBC 2018 Table 2508.1, gypsum board and gypsum panel products shall be assembled and installed in compliance with which standards?
A.ASTM C150 and ASTM C270
B.GA-216 and ASTM C840
C.NFPA 13 and ASTM E84 only
D.AISI S100 and ASTM A653
Explanation: IBC 2018 Table 2508.1 lists GA-216 and ASTM C840 as the installation standards for gypsum board and gypsum panel products. Those documents set hanging, fastening, and finishing rules that the open-book C-4E exam expects you to apply with Chapter 25.
3Under IBC 2018 Section 2508.3, where must the edges and ends of gypsum board occur in a single-ply application?
A.Only at mid-span between studs so the board can flex
B.Only at the top plate; bottom edges may float freely
C.On the framing members, except edges and ends that are perpendicular to the framing
D.Wherever the installer can reach with a screw gun
Explanation: IBC 2018 Section 2508.3 requires edges and ends to land on framing members, except those edges and ends that run perpendicular to the framing. That rule keeps fasteners in solid wood or steel and is the same idea used in ASTM C840 and GA-216.
4Per IBC 2018 Section 2504.1.1, what is the minimum nominal thickness of wood supports for gypsum board?
A.1 inch in the least dimension
B.4 inches in the least dimension
C.2 inches in the least dimension
D.Nominal 1x2 furring is always acceptable as the only support
Explanation: IBC 2018 Section 2504.1.1 requires wood supports for gypsum board, as well as wood stripping or furring, to be not less than 2 inches nominal in the least dimension. The exception allows 1-inch by 2-inch nominal furring strips only when they are installed over solid backing.
5Which screw type is specified for attaching gypsum board to wood framing?
A.Type S
B.Type G
C.Type W
D.Type F
Explanation: Type W screws are made for wood framing and must penetrate the wood at least 5/8 inch. Type S screws are for steel, and Type G screws laminate gypsum to gypsum. ASTM C1002 covers the light-gauge Type W and Type S products listed in IBC Table 2506.2.
6How should gypsum board typically be oriented on a wood-joist ceiling?
A.Parallel to the joists so every long edge floats
B.Diagonal at 45 degrees to the joists
C.Perpendicular to the joists so the long edges cross the framing
D.In random mixed directions to stagger color variation
Explanation: ASTM C840, GA-216, and the Gypsum Construction Handbook call for ceiling panels to be applied perpendicular to joists or furring. That orientation puts more framing under each sheet, reduces sag, and lets end joints land on members and be staggered.
7What is the maximum distance fasteners may be placed from the edges and ends of gypsum board?
A.1/8 inch
B.3/4 inch
C.3/8 inch
D.1-1/2 inches
Explanation: IBC 2018 Section 2508.6.4 and ASTM C840/GA-216 require fasteners to be not more than 3/8 inch from edges and ends. Closer than about 3/8 inch can break the core; much farther leaves a loose edge that ridges after finishing.
8How far should a gypsum-board fastener be driven?
A.Until the head stands about 1/8 inch proud of the face
B.Until the head punches through the face paper into the core
C.Until the head is seated in a slight dimple without breaking the face paper
D.Until the screw spins freely and strips the framing
Explanation: IBC 2018 Section 2508.3.1 and ASTM C840 require fasteners to be applied so they do not fracture the face paper. A slight dimple below the surface lets joint compound hide the head. Overdriving tears the paper and loses holding power.
9Per IBC 2018 Section 2508.2.1, when may gypsum wallboard be installed?
A.As soon as the roof sheathing is on, even if the building is still open to weather
B.Whenever the outdoor temperature is above freezing, rain or not
C.Only after weather protection for the installation is provided
D.Before windows are in, so the board can dry the structure
Explanation: IBC 2018 Section 2508.2.1 says gypsum wallboard, gypsum lath, or gypsum plaster shall not be installed until weather protection for the installation is provided. Wet board loses strength, stains, and will not take a reliable finish.
10For 1/2-inch gypsum board on walls with wood studs 16 inches on center and no adhesive, what is the maximum screw spacing?
A.7 inches on center
B.8 inches on center
C.12 inches on center
D.16 inches on center
Explanation: ASTM C840 and GA-216, the installation standards named in IBC 2018 Table 2508.1, allow screws at 16 inches on center on walls when framing is 16 inches on center. Nails on the same wall are 8 inches on center. Fire-rated listings may require tighter spacing than this generic maximum.

About the NV C-4E Drywall Exam

The Nevada C-4E Drywall Contractor Examination is the official Nevada State Contractors Board trade examination administered by PSI Services LLC. The official exam has 20 scored questions. Passing is 70% (14 of 20 points) in 1 hour. 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. 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.

Exam sponsor: PSI Services LLC (for the Nevada State Contractors Board). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

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

Time Limit

1 hour

Passing Score

70% (14 of 20 points)

Exam / Certification Fees

USD 95

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

30%

Installation

Installation (6 items)

30%

Taping and Finishing

Taping and Finishing (6 items)

20%

Materials

Materials (4 items)

20%

Special Applications and Accessories

Special Applications and Accessories (4 items)

Preparing for the NV C-4E Drywall Exam

What You Need to Know

  • Passing score: 70% (14 of 20 points)
  • Assessment: Open Book computer-based multiple-choice. International Building Code, 2018 (allowed in center)
  • Time limit: 1 hour
  • Exam / certification fees: USD 95 Official sources

Using Our Practice Resources

  • 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-4E Drywall: Suggested Study Strategy

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-4E Drywall Contractor Examination?

The official PSI examination has 20 scored questions. Passing is 70% (14 of 20 points) within 1 hour (Candidate Information Bulletin 270, updated 3/25/2026).

How much does the NV C-4E 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-4E 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.