100+ Free AZ ROC C-1/C-10 Drywall & Acoustical Systems Practice Questions

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Key Facts: AZ ROC C-1/C-10 Drywall & Acoustical Systems Exam

30 Questions

Official Question Count

PSI Candidate Information Bulletin

75 Minutes

Time Limit

PSI Candidate Information Bulletin

70%

Passing Score

Arizona Registrar of Contractors

$66

Exam Fee

PSI Services LLC

Open Book Computerized MCQ

Exam Format

PSI / AZ ROC Guidelines

100 Questions

Practice Question Bank

OpenExamPrep Practice Bank

The Arizona ROC C-1/C-10 Drywall and Acoustical Systems Examination consists of 30 scored multiple-choice questions administered in a 75-minute open-book PSI computer-delivered session with a 70% passing threshold ($66 exam fee). This practice bank offers 100 realistic English-language practice MCQs with detailed technical explanations, code citations, and worked material calculations adapted for exam prep.

Sample AZ ROC C-1/C-10 Drywall & Acoustical Systems Practice Questions

Try these sample questions to test your AZ ROC C-1/C-10 Drywall & Acoustical Systems exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1According to Gypsum Association GA-216 standards, what is the minimum required penetration depth for drywall screws attached into wood framing members?

A.5/8 inch

B.3/8 inch

C.1/4 inch

D.1 inch

Explanation: GA-216 Section 4.3 specifies that screws attaching gypsum board to wood framing members must penetrate the wood framing a minimum of 5/8 inch (16 mm). Nails require a deeper minimum penetration of 7/8 inch into wood framing.

2When attaching 5/8-inch gypsum wallboard to 25-gauge non-structural steel studs, what is the minimum penetration required for Type S drywall screws into the metal member?

A.1/2 inch

B.3/8 inch

C.5/8 inch

D.3/4 inch

Explanation: Per ASTM C840 and GA-216, Type S drywall screws must penetrate non-structural steel studs (such as 25-gauge framing) by at least 3/8 inch past the interior surface of the metal channel flange.

3What is the maximum allowed fastener spacing when single-layer 1/2-inch gypsum board is attached to ceiling joists spaced 16 inches on center using Type W screws without adhesive?

A.7 inches on center

B.8 inches on center

C.12 inches on center

D.16 inches on center

Explanation: Per GA-216 Section 4.5, maximum screw spacing on ceilings is 12 inches on center for single-layer gypsum board when framing members are spaced 16 inches o.c. Nails on ceilings require tighter 7-inch spacing.

4Which type of fastener is specifically designed with sharp point threads for attaching gypsum board to 25-gauge light-steel studs?

A.Type W screws

B.Type G screws

C.Type S-12 screws

D.Type S screws

Explanation: Type S drywall screws feature a sharp self-piercing point and bugle head, specifically engineered to pierce and thread directly into light-gauge (25 to 20 gauge) steel framing members without stripping.

5A drywall contractor is installing 5/8-inch Type X gypsum panels onto 14-gauge heavy structural steel framing studs. Which fastener must be used?

A.Type S-12 self-drilling screws

B.Type S sharp point screws

C.Type W coarse thread screws

D.Type G laminating screws

Explanation: Heavy-gauge steel studs (18 gauge down to 12 gauge) require Type S-12 self-drilling screws equipped with a drill-bit point capable of boring through thick steel before tapping threads.

6Which type of screw fastener features coarse, wide-spaced threads designed to grip wood fibers when attaching gypsum board to wood studs?

A.Type S-12 screw

B.Type W screw

C.Type G screw

D.Type S fine thread screw

Explanation: Type W drywall screws have coarse, deep threads with a sharp point, engineered specifically to provide maximum withdrawal resistance when driven into wood framing members.

7When installing drywall on wall partitions, how should butt end joints in adjacent runs be arranged per GA-216 standards?

A.Aligned directly inline on the same stud bay

B.Staggered by at least 12 inches on adjacent studs

C.Staggered by at least 24 inches on adjacent studs

D.Offset by no more than 6 inches between wall panels

Explanation: GA-216 requires end joints (butt joints) in adjacent panels to be staggered at least 24 inches apart across framing members to prevent weak continuous vertical seams and minimize cracking.

8When mechanically fastening standard metal corner bead to outside drywall corners prior to taping, what is the maximum recommended fastener spacing along each flange?

A.6 inches on center

B.12 inches on center

C.16 inches on center

D.9 inches on center

Explanation: Standard metal exterior corner bead should be mechanically attached with nails or screws spaced a maximum of 9 inches on center along each flange, staggered on opposite sides.

9Per ASTM C840 and GA-216, what is the maximum continuous length of a drywall partition wall allowed before installing an expansion/control joint?

A.30 linear feet

B.50 linear feet

C.20 linear feet

D.100 linear feet

Explanation: ASTM C840 and GA-216 require control joints (093 control joints) to be specified and installed in continuous drywall partition walls at distances not exceeding 30 linear feet.

10Under GA-216, what is the maximum area of a continuous gypsum board ceiling expanse permitted without providing perimeter relief or a control joint?

A.1,200 square feet

B.900 square feet

C.500 square feet

D.2,500 square feet

Explanation: GA-216 requires control joints in ceilings where a continuous expanse exceeds 900 square feet (or 30 linear feet in either direction without perimeter relief).

About the AZ ROC C-1/C-10 Drywall & Acoustical Systems Exam

The Arizona ROC C-1/C-10 Drywall and Acoustical Systems Examination is a computer-delivered open-book trade examination administered by PSI Services LLC for the Arizona Registrar of Contractors. The exam tests comprehensive trade knowledge of drywall board installation, steel and wood stud framing layout, acoustical ceiling T-bar grid systems, hanger wire attachment, sound and fire-rated assemblies (GA-600), taping and finishing levels (Level 0–5 per GA-214), veneer plaster application, shaftwalls, and OSHA 1926 safety regulations (scaffolding, respirable crystalline silica, stilts, and fall protection).

Questions

30 scored questions

Time Limit

75 minutes

Passing Score

70%

Exam Fee

$66 (Arizona ROC / PSI Services LLC)

AZ ROC C-1/C-10 Drywall & Acoustical Systems Exam Content Outline

40%

Drywall Materials and Installation

Gypsum board selection (Type X, moisture resistant, cement board), steel and wood stud framing attachment, corner beads, fasteners, screw spacing, layout, wall assemblies, and ASTM C840/GA-216 installation specifications.

27%

Ceilings, Acoustical Systems Materials and Installation

Suspended T-bar grid systems, lay-in acoustical tiles, main runners, cross tees, hanger wire sizing and attachment (12-gauge wire, 4 ft o.c.), seismic bracing, perimeter molding, hold-down clips, Noise Reduction Coefficient (NRC), and Ceiling Attenuation Class (CAC).

13%

Taping and Finishing

Gypsum board finishing levels (Level 0 through Level 5), joint compound selection (ready-mix, setting-type/durabond), paper and mesh joint tape, embedment, skimming, drying times, sanding, and GA-214 joint finishing standards.

10%

Special Applications including Veneer Plaster

Veneer plaster (blueboard base, single-coat, two-coat veneer systems), high-impact board, lead-lined gypsum, sound attenuation batts, curved partitions, shaftwall assemblies, and fire-rated assemblies (GA-600 Fire Resistance Design Manual).

10%

OSHA Safety

OSHA 29 CFR 1926 standards for drywall installation, baker/rolling scaffolding guardrails and wheel locks, silica dust control (respiratory protection under 1926.1153), eye/hand PPE, stilts safety, ladder safety, and material handling.

How to Pass the AZ ROC C-1/C-10 Drywall & Acoustical Systems Exam

What You Need to Know

Passing score: 70%
Exam length: 30 questions
Time limit: 75 minutes
Exam fee: $66

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

AZ ROC C-1/C-10 Drywall & Acoustical Systems Study Tips from Top Performers

1Study Gypsum Association GA-216 guidelines for fastener spacing, stud alignment, and staggered joint layouts for both wood and light-gauge metal framing.

2Memorize GA-214 levels of gypsum board finish (Level 0 to Level 5), including specific coat requirements and recommended usage for flat vs gloss paints and critical lighting areas.

3Understand acoustical ceiling installation codes (ASTM C635/C636), including 12-gauge hanger wire spacing (4 ft o.c.), main beam splice rules, wall angle attachment, and seismic perimeter clearances.

4Learn fire-rated assembly construction rules from GA-600 Fire Resistance Design Manual, including 1-hour and 2-hour wall and shaftwall UL/GA designs, Type X gypsum board core properties, and joint overlap requirements.

5Review OSHA 29 CFR 1926 standards for mobile scaffold guardrails (toprail at 38–45 inches, toeboards), ladder angle ratio (4:1), and respirable crystalline silica compliance when cutting gypsum/cement boards or sanding.

Frequently Asked Questions

How many questions are on the official Arizona ROC C-1/C-10 exam?

The official PSI C-1/C-10 Drywall and Acoustical Systems exam contains 30 scored multiple-choice questions with a 75-minute time limit.

What passing score is required for the AZ ROC C-1/C-10 exam?

A passing score of 70% is required, meaning candidates must answer at least 21 out of 30 questions correctly.

Is the Arizona ROC C-1/C-10 examination open book?

Yes, the trade exam is open-book. Approved references such as Gypsum Association manuals (GA-216, GA-600), ASTM standards, and OSHA 29 CFR 1926 may be brought into the PSI testing center.

What topics carry the highest weight on the C-1/C-10 exam?

Drywall Materials and Installation carries the largest weight at 40% (12 questions), followed by Ceilings, Acoustical Systems Materials and Installation at 27% (8 questions), Taping and Finishing at 13% (4 questions), Special Applications/Veneer Plaster at 10% (3 questions), and OSHA Safety at 10% (3 questions).

Where do I schedule the AZ ROC C-1/C-10 trade exam?

You can schedule the examination through PSI Services LLC online at https://test-takers.psiexams.com/azcon or by telephone.

100+ Free AZ ROC C-1/C-10 Drywall & Acoustical Systems Practice Questions

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