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Arizona C-56 Welding Contractor EXAM QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
Arizona C-56 Welding Contractor Exam
250 Practice Questions with Rationales
EXAM COVERAGE OVERVIEW (10 Key Points)
1. Licensing & Regulatory Body – The Arizona Registrar of Contractors (ROC) issues the C-
56 (Commercial), R-56 (Residential), and CR-56 (Dual) Welding Contractor licenses under
A.R.S. Title 32, Chapter 10 .
2. Exam Structure – Candidates must pass both the Statutes and Rules Exam (SRE) and the
Trade Exam with a minimum score of 70% . After a failed attempt, candidates must
wait 30 days before retaking the exam .
3. Scope of Work – The CR-56 classification allows the licensee to weld metals of any type
for any purpose, combining commercial (C-56) and residential (R-56) scopes .
4. Experience Requirement – Applicants must demonstrate 2 years of hands-on welding
experience for the commercial license, or 4 years for the dual license when combined
with residential scope .
5. Bond & Insurance – A $5,000 surety bond and **minimum $500,000 general liability
insurance** are required for Arizona welding contractor licensure .
6. Key Reference Standards – AWS D1.1 (Structural Steel), AWS D1.3 (Sheet Steel), AWS
D1.6 (Stainless Steel), AWS D1.8 (Seismic), AWS A5.1/A5.5 electrode classifications,
OSHA 29 CFR 1926, and ASME Section IX .
7. Welding Processes Tested – SMAW (E6010, E6011, E7018), GMAW (MIG) with shielding
gases (C25, 100% CO₂), GTAW (TIG) with tungsten selection, FCAW-G vs. FCAW-S, and
transfer modes (short-circuit, globular, spray, pulse-spray) .
8. Safety & OSHA Compliance – PPE requirements (shade 10–13 for arc welding, shade 14
for >300 amps), hot work permits, fire watch requirements (30 minutes after welding
stops), 35-foot clearance from combustibles, cylinder storage (vertical, secured, valve
caps on), and confined space welding (air monitoring + attendant) .
9. Welding Inspection & Quality Control – AWS D1.1 acceptance criteria (maximum
undercut 1/32 inch for thicknesses over 3/4 inch), NDT methods (VT, UT, MT, PT, RT),
weld defects (porosity, cracks, slag inclusion, undercut, lack of fusion), and WPS/PQR
documentation .
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10. Continuing Education – No continuing education is required for welding contractors in
Arizona, unlike many other trades .
1. According to Arizona ROC rules, what is the scope of work for a CR-56 welding contractor?
A) Only structural steel welding
B) All welding work under $1,000
C) Welding of any metal for any purpose
D) Only welding on pressure vessels
Correct Answer: C
Rationale: Per Arizona ROC R4-9-114, the CR-56 license covers welding of all types of metals for
any purpose. The CR-56 classification allows the scopes of work permitted by both the
commercial C-56 and residential R-56 welding licenses .
2. Which Arizona agency is responsible for licensing welding contractors?
A) Arizona Department of Environmental Quality
B) Arizona Division of Occupational Safety
C) Arizona Registrar of Contractors (ROC)
D) Arizona State Fire Marshal
Correct Answer: C
Rationale: The Arizona Registrar of Contractors (ROC) licenses all contractors, including welding
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contractors, under A.R.S. Title 32, Chapter 10. They administer both the trade exam and the
statutes and rules exam .
3. What is the minimum liability insurance required for Arizona welding contractors?
A) $100,000
B) $300,000
C) $500,000
D) $1,000,000
Correct Answer: C
Rationale: The Arizona ROC requires a minimum of $500,000 in general liability insurance for
welding contractors. This is a standard requirement across most contractor classifications .
4. What is the minimum passing grade required on the trade examination?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: Arizona Administrative Code R4-9-106 requires that the qualifying party receive a
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grade of at least 70% on each required examination. This applies to both the trade exam and
the statutes and rules exam .
5. What is the required surety bond amount for a CR-56 welding contractor?
A) $2,500
B) $5,000
C) $7,500
D) $10,000
Correct Answer: B
Rationale: Arizona ROC regulations require a $5,000 surety bond for welding contractors. Bond
amounts vary by classification but are established based on the estimated annual volume of
work anticipated .
6. According to OSHA, what is the minimum required shade number for a welding helmet
when welding with an amperage of 150 A in DC-EN?
A) Shade 5
B) Shade 7
C) Shade 9
D) Shade 13
Arizona C-56 Welding Contractor EXAM QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
Arizona C-56 Welding Contractor Exam
250 Practice Questions with Rationales
EXAM COVERAGE OVERVIEW (10 Key Points)
1. Licensing & Regulatory Body – The Arizona Registrar of Contractors (ROC) issues the C-
56 (Commercial), R-56 (Residential), and CR-56 (Dual) Welding Contractor licenses under
A.R.S. Title 32, Chapter 10 .
2. Exam Structure – Candidates must pass both the Statutes and Rules Exam (SRE) and the
Trade Exam with a minimum score of 70% . After a failed attempt, candidates must
wait 30 days before retaking the exam .
3. Scope of Work – The CR-56 classification allows the licensee to weld metals of any type
for any purpose, combining commercial (C-56) and residential (R-56) scopes .
4. Experience Requirement – Applicants must demonstrate 2 years of hands-on welding
experience for the commercial license, or 4 years for the dual license when combined
with residential scope .
5. Bond & Insurance – A $5,000 surety bond and **minimum $500,000 general liability
insurance** are required for Arizona welding contractor licensure .
6. Key Reference Standards – AWS D1.1 (Structural Steel), AWS D1.3 (Sheet Steel), AWS
D1.6 (Stainless Steel), AWS D1.8 (Seismic), AWS A5.1/A5.5 electrode classifications,
OSHA 29 CFR 1926, and ASME Section IX .
7. Welding Processes Tested – SMAW (E6010, E6011, E7018), GMAW (MIG) with shielding
gases (C25, 100% CO₂), GTAW (TIG) with tungsten selection, FCAW-G vs. FCAW-S, and
transfer modes (short-circuit, globular, spray, pulse-spray) .
8. Safety & OSHA Compliance – PPE requirements (shade 10–13 for arc welding, shade 14
for >300 amps), hot work permits, fire watch requirements (30 minutes after welding
stops), 35-foot clearance from combustibles, cylinder storage (vertical, secured, valve
caps on), and confined space welding (air monitoring + attendant) .
9. Welding Inspection & Quality Control – AWS D1.1 acceptance criteria (maximum
undercut 1/32 inch for thicknesses over 3/4 inch), NDT methods (VT, UT, MT, PT, RT),
weld defects (porosity, cracks, slag inclusion, undercut, lack of fusion), and WPS/PQR
documentation .
, Page 2 of 125
10. Continuing Education – No continuing education is required for welding contractors in
Arizona, unlike many other trades .
1. According to Arizona ROC rules, what is the scope of work for a CR-56 welding contractor?
A) Only structural steel welding
B) All welding work under $1,000
C) Welding of any metal for any purpose
D) Only welding on pressure vessels
Correct Answer: C
Rationale: Per Arizona ROC R4-9-114, the CR-56 license covers welding of all types of metals for
any purpose. The CR-56 classification allows the scopes of work permitted by both the
commercial C-56 and residential R-56 welding licenses .
2. Which Arizona agency is responsible for licensing welding contractors?
A) Arizona Department of Environmental Quality
B) Arizona Division of Occupational Safety
C) Arizona Registrar of Contractors (ROC)
D) Arizona State Fire Marshal
Correct Answer: C
Rationale: The Arizona Registrar of Contractors (ROC) licenses all contractors, including welding
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contractors, under A.R.S. Title 32, Chapter 10. They administer both the trade exam and the
statutes and rules exam .
3. What is the minimum liability insurance required for Arizona welding contractors?
A) $100,000
B) $300,000
C) $500,000
D) $1,000,000
Correct Answer: C
Rationale: The Arizona ROC requires a minimum of $500,000 in general liability insurance for
welding contractors. This is a standard requirement across most contractor classifications .
4. What is the minimum passing grade required on the trade examination?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: Arizona Administrative Code R4-9-106 requires that the qualifying party receive a
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grade of at least 70% on each required examination. This applies to both the trade exam and
the statutes and rules exam .
5. What is the required surety bond amount for a CR-56 welding contractor?
A) $2,500
B) $5,000
C) $7,500
D) $10,000
Correct Answer: B
Rationale: Arizona ROC regulations require a $5,000 surety bond for welding contractors. Bond
amounts vary by classification but are established based on the estimated annual volume of
work anticipated .
6. According to OSHA, what is the minimum required shade number for a welding helmet
when welding with an amperage of 150 A in DC-EN?
A) Shade 5
B) Shade 7
C) Shade 9
D) Shade 13
