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Arizona C-45 Sheet Metal Contractor EXAM QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
Arizona C-45 Sheet Metal Contractor Exam
10-Line Exam Coverage in Points Form
1. Licensing & Regulations – Arizona ROC jurisdiction, C-45 (Commercial), R-45
(Residential), CR-45 (Combined) license distinctions, 70% passing score , 30-day retake
waiting period , 4 years supervisory experience within past 10 years , A.R.S. Title 32,
Chapter 10 and A.A.C. Title 4, Chapter 9 , disciplinary actions for working outside
classification , and qualifying party requirements .
2. Materials & Properties – Galvanized steel (zinc coating, hot-dip process) , stainless steel
(corrosion resistance, hygienic properties) , aluminum (lightweight, natural oxide layer) ,
copper (aesthetic appeal, corrosion resistance) , Galvalume (aluminum-zinc coating, heat
reflectivity) , gauge thickness (16-gauge ≈0.060", 26-gauge ≈0.018") , ductility , thermal
expansion, and ferrous vs non-ferrous distinctions .
3. Fabrication & Layout – Pittsburgh lock joints , snap-lock seams , S-cleats, drive cleats,
bend allowance, K-factor calculations, layout methods (parallel line, radial,
triangulation), and forming techniques using box and pan brakes, slip rolls, and aviation
snips .
4. HVAC Ductwork Systems – SMACNA HVAC Duct Construction Standards (3rd Edition) ,
gauge selection by duct size/pressure (20 gauge for ducts ≤12" low pressure) ,
rectangular vs round/spiral duct , turning vanes, duct hangers and supports (4 ft
spacing) , fire dampers, smoke dampers, and flexible duct applications .
5. Roofing & Architectural Sheet Metal – Step flashing, base flashing, counter-flashing,
valley flashing , gravel stops , standing seam roofing , coping , fascia, slope classifications
(low-slope <2:12 vs steep-slope) , metal roofing gauge requirements, and NRCA Roofing
Manual reference .
6. Installation & Fastening – Self-drilling screws (with neoprene washers for watertight
seal) , rivets (prohibited on steep-slope roofs due to thermal movement) , pop rivets,
thermal expansion joints , sealants (polyurethane mastic UL-listed) , duct sealing
requirements, hanger spacing per SMACNA, and fastener selection for galvanic corrosion
prevention .
7. Safety & OSHA Regulations – Fall protection at 6 feet , cut-resistant gloves , safety
goggles/face shields , hearing protection , HazCom/SDS requirements (OSHA 29 CFR
1910.1200) , TIG welding safety (respirator P100 for stainless steel) , confined space
protocols, ladder angle (4:1 ratio ≈75°) , lockout/tagout (29 CFR 1910.147) , and CFR Title
29, Part 1926 Selections .
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8. Codes & Reference Standards – SMACNA HVAC Duct Construction Standards ,
International Mechanical Code (IMC) , International Building Code (IBC) , NRCA Roofing
Manual , Architectural Sheet Metal Manual (6th Edition) , NFPA 96 (kitchen hoods, 18"
clearance) , and OSHA CFR Title 29, Part 1926 .
9. Tools & Equipment – Box and pan brake , slip rolls, aviation snips (straight, left, right
cuts) , plasma cutter , TIG welder, manometer , anemometer , scribe, portable power
drills, portable brakes (field fabrication up to 24") , and cold saw.
10. Blueprint Reading & Estimating – Duct layout symbols (□ with diagonal for rectangular
duct, ⧈ double-square for expansion joints) , bill of materials, material take-off, square
footage calculations, duct sizing (CFM and velocity relationship Q=A×V) , seam
allowances, and mechanical drawing symbols.
250 MCQ Questions with Rationales
Question 1
According to Arizona Administrative Code R4-9-106, what is the minimum passing grade
required on the C-45 trade examination?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: Arizona Administrative Code R4-9-106(C) explicitly requires a grade of at least 70%
on each required examination, including both the statutes and rules and the trade examination.
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This applies uniformly to all specialty contractor exams administered by the Arizona Registrar of
Contractors .
Question 2
If a qualifying party fails the C-45 trade examination for the second time, how many calendar
days must they wait before being permitted to retake the exam?
A) 7 days
B) 14 days
C) 30 days
D) 90 days
Correct Answer: C
Rationale: Candidates who fail the examination must wait 30 calendar days before retaking it.
This waiting period applies after each failed attempt and is designed to allow candidates
sufficient time for additional study and preparation before their next examination attempt .
Question 3
What is the minimum number of years of supervisory trade experience required for an applicant
to qualify for the Arizona C-45 Sheet Metal Contractor license?
A) 2 years
B) 3 years
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C) 4 years
D) 5 years
Correct Answer: C
Rationale: The Arizona Registrar of Contractors requires applicants to demonstrate a minimum
of four years of supervisory trade experience within the past ten years. This is standard for most
ROC classifications and ensures that licensed contractors possess adequate practical knowledge
and field experience .
Question 4
Which of the following activities is expressly NOT within the scope of a C-45 Sheet Metal
license?
A) Installation of HVAC ductwork
B) Fabrication of metal roofing and flashing components
C) Structural steel framing for commercial buildings
D) Installation of metal gutters and leaders
Correct Answer: C
Rationale: Structural steel framing requires separate licensing classifications. The C-45 license
covers sheet metal work including ductwork, roofing, siding, flashing, gutters, leaders, and
architectural metal components. Structural steel framing is explicitly outside the sheet metal
scope .
Arizona C-45 Sheet Metal Contractor EXAM QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
Arizona C-45 Sheet Metal Contractor Exam
10-Line Exam Coverage in Points Form
1. Licensing & Regulations – Arizona ROC jurisdiction, C-45 (Commercial), R-45
(Residential), CR-45 (Combined) license distinctions, 70% passing score , 30-day retake
waiting period , 4 years supervisory experience within past 10 years , A.R.S. Title 32,
Chapter 10 and A.A.C. Title 4, Chapter 9 , disciplinary actions for working outside
classification , and qualifying party requirements .
2. Materials & Properties – Galvanized steel (zinc coating, hot-dip process) , stainless steel
(corrosion resistance, hygienic properties) , aluminum (lightweight, natural oxide layer) ,
copper (aesthetic appeal, corrosion resistance) , Galvalume (aluminum-zinc coating, heat
reflectivity) , gauge thickness (16-gauge ≈0.060", 26-gauge ≈0.018") , ductility , thermal
expansion, and ferrous vs non-ferrous distinctions .
3. Fabrication & Layout – Pittsburgh lock joints , snap-lock seams , S-cleats, drive cleats,
bend allowance, K-factor calculations, layout methods (parallel line, radial,
triangulation), and forming techniques using box and pan brakes, slip rolls, and aviation
snips .
4. HVAC Ductwork Systems – SMACNA HVAC Duct Construction Standards (3rd Edition) ,
gauge selection by duct size/pressure (20 gauge for ducts ≤12" low pressure) ,
rectangular vs round/spiral duct , turning vanes, duct hangers and supports (4 ft
spacing) , fire dampers, smoke dampers, and flexible duct applications .
5. Roofing & Architectural Sheet Metal – Step flashing, base flashing, counter-flashing,
valley flashing , gravel stops , standing seam roofing , coping , fascia, slope classifications
(low-slope <2:12 vs steep-slope) , metal roofing gauge requirements, and NRCA Roofing
Manual reference .
6. Installation & Fastening – Self-drilling screws (with neoprene washers for watertight
seal) , rivets (prohibited on steep-slope roofs due to thermal movement) , pop rivets,
thermal expansion joints , sealants (polyurethane mastic UL-listed) , duct sealing
requirements, hanger spacing per SMACNA, and fastener selection for galvanic corrosion
prevention .
7. Safety & OSHA Regulations – Fall protection at 6 feet , cut-resistant gloves , safety
goggles/face shields , hearing protection , HazCom/SDS requirements (OSHA 29 CFR
1910.1200) , TIG welding safety (respirator P100 for stainless steel) , confined space
protocols, ladder angle (4:1 ratio ≈75°) , lockout/tagout (29 CFR 1910.147) , and CFR Title
29, Part 1926 Selections .
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8. Codes & Reference Standards – SMACNA HVAC Duct Construction Standards ,
International Mechanical Code (IMC) , International Building Code (IBC) , NRCA Roofing
Manual , Architectural Sheet Metal Manual (6th Edition) , NFPA 96 (kitchen hoods, 18"
clearance) , and OSHA CFR Title 29, Part 1926 .
9. Tools & Equipment – Box and pan brake , slip rolls, aviation snips (straight, left, right
cuts) , plasma cutter , TIG welder, manometer , anemometer , scribe, portable power
drills, portable brakes (field fabrication up to 24") , and cold saw.
10. Blueprint Reading & Estimating – Duct layout symbols (□ with diagonal for rectangular
duct, ⧈ double-square for expansion joints) , bill of materials, material take-off, square
footage calculations, duct sizing (CFM and velocity relationship Q=A×V) , seam
allowances, and mechanical drawing symbols.
250 MCQ Questions with Rationales
Question 1
According to Arizona Administrative Code R4-9-106, what is the minimum passing grade
required on the C-45 trade examination?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: Arizona Administrative Code R4-9-106(C) explicitly requires a grade of at least 70%
on each required examination, including both the statutes and rules and the trade examination.
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This applies uniformly to all specialty contractor exams administered by the Arizona Registrar of
Contractors .
Question 2
If a qualifying party fails the C-45 trade examination for the second time, how many calendar
days must they wait before being permitted to retake the exam?
A) 7 days
B) 14 days
C) 30 days
D) 90 days
Correct Answer: C
Rationale: Candidates who fail the examination must wait 30 calendar days before retaking it.
This waiting period applies after each failed attempt and is designed to allow candidates
sufficient time for additional study and preparation before their next examination attempt .
Question 3
What is the minimum number of years of supervisory trade experience required for an applicant
to qualify for the Arizona C-45 Sheet Metal Contractor license?
A) 2 years
B) 3 years
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C) 4 years
D) 5 years
Correct Answer: C
Rationale: The Arizona Registrar of Contractors requires applicants to demonstrate a minimum
of four years of supervisory trade experience within the past ten years. This is standard for most
ROC classifications and ensures that licensed contractors possess adequate practical knowledge
and field experience .
Question 4
Which of the following activities is expressly NOT within the scope of a C-45 Sheet Metal
license?
A) Installation of HVAC ductwork
B) Fabrication of metal roofing and flashing components
C) Structural steel framing for commercial buildings
D) Installation of metal gutters and leaders
Correct Answer: C
Rationale: Structural steel framing requires separate licensing classifications. The C-45 license
covers sheet metal work including ductwork, roofing, siding, flashing, gutters, leaders, and
architectural metal components. Structural steel framing is explicitly outside the sheet metal
scope .
