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Nevada C-25A Sheet Metal Contractor EXAM QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
Nevada C-25A Sheet Metal Contractor Exam
10-Line Exam Coverage in Points Form
1. Licensing & Regulations – Nevada State Contractors Board (NSCB) jurisdiction and
licensing requirements , C-13 "Using Sheet Metal" classification (C-25A is a sub-
classification) , 4 years journey-level experience required within the preceding 10 years ,
70% passing score required for both exams , initial application fee $300, license/biennial
renewal $600, Residential Recovery Fund Assessment $200–$1,000 (residential
contractors), 4 reference certificates required from individuals with firsthand knowledge
of applicant's experience , two exams required (CMS + Trade) .
2. Contracts & Business Law – Four elements of a valid contract: offer, acceptance,
consideration, and legal purpose , lump sum/fixed-price contracts for large projects ,
cost-plus and time-and-materials contracts , change orders and addenda (modify scope,
schedule, and costs) , critical path method (CPM) for project scheduling , final project
closeout (transfer ownership, complete documentation, final inspections) .
3. Estimating & Project Management – Material take-offs quantify materials needed for
accurate cost estimation , equipment costs include rental fees, depreciation,
maintenance, and operational expenses , monitoring budget variances and managing
change orders promptly to control project costs , regular job costing and financial
tracking to maintain profitability , Gantt charts for visualizing project timelines .
4. Blueprint Reading & Specifications – Understanding scales, symbols, and specifications ,
standard symbol for rectangular duct is a rectangle with "R" inside , dashed (hidden)
lines indicate features not visible from current viewing angle , "4-0-0" notation = 4 feet,
0 inches, 0 ⅛-inch fractions , convert 96 inches to feet by dividing by 12 (8 feet) , section
views illustrate vertical relationships and interior details , mechanical specifications
detail insulation R-value (R-6 to R-8 typical for energy-efficient Nevada buildings) .
5. Fabrication & Layout – Brake is primary tool for creating bends in sheet metal , spot
welding fuses overlapping sheets at a specific point using resistance electric current ,
rivet set holds and aligns rivet while being driven or formed , hollow punch creates holes
(cuts a plug of material), solid punch marks or drives components , carbide-tipped
scriber creates fine, precise, permanent lines on metal , allowance = extra material
added to net dimensions for seams, locks, or hems , proper drill bit angle for steel
(denser, requires larger point angle to prevent wandering) .
6. Ductwork & HVAC Systems – SMACNA standards provide guidelines for duct
construction and installation , proper sealing of joints with mastic or sealant prevents air
leakage and ensures energy efficiency , sharp bends and fittings cause pressure loss due
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to increased friction and turbulence , insulation R-value for ductwork specified in
mechanical specifications (R-6 to R-8 typical) .
7. Safety & OSHA Regulations – OSHA 29 CFR 1926 Subpart M mandates fall protection on
construction sites , proper ventilation and respiratory protection essential when welding
in confined spaces , welding fumes contain hazardous substances causing respiratory
issues , RCRA governs proper disposal and management of hazardous waste (solvents,
metals) , confined space entry protocols and proper PPE requirements .
8. Labor & Employment Law – FLSA establishes federal minimum wage, overtime, and
recordkeeping standards , worker classification determined by degree of control and
independence in work performed (employee vs independent contractor) , workers'
compensation insurance covers employee medical expenses and lost wages due to work-
related injuries .
9. Business Entities & Finance – Sole proprietorship provides least personal liability
protection (no separation between personal and business liabilities) , corporation and
LLC provide liability protection , line of credit is a short-term financing option for
managing cash flow needs , contractors license bonds required (amount determined by
NSCB) .
10. Project Documentation & Closeout – Final project closeout transfers ownership to
client, completes documentation, final inspections, obtaining approvals, and transferring
project documentation , addenda and change orders modify original plans affecting
scope, timeline, and budget , warranties (implied warranty that work will be free from
defects for a reasonable period) .
250 MCQ Questions with Rationales
Question 1
According to Nevada law, which agency is responsible for licensing sheet metal contractors in
the state?
A) Nevada Department of Business and Industry
B) Nevada State Contractors Board (NSCB)
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C) Nevada Department of Transportation
D) Nevada Construction Industry Council
Correct Answer: B
Rationale: The Nevada State Contractors Board (NSCB) is the governing board that licenses and
regulates all contractors, including sheet metal contractors in the C-13 "Using Sheet Metal"
classification . The NSCB administers the examination process and enforces licensing
requirements under Nevada law .
Question 2
What is the minimum number of years of journey-level experience required for a Nevada sheet
metal contractor license?
A) 2 years
B) 3 years
C) 4 years
D) 5 years
Correct Answer: C
Rationale: Nevada requires a minimum of four years of experience as a journeyman, foreman,
supervising employee, or contractor in the specific trade classification . The experience must
have been obtained within the preceding ten years . Training received at an accredited college
or university may be used to satisfy a portion of the required experience .
, Page 4 of 134
Question 3
What is the passing score required for the Nevada sheet metal contractor examinations?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: Nevada requires a minimum passing score of 70% on both required examinations:
the Contractors Management Survey (CMS) exam and the applicable trade exam . The trade
exam is required for the C-25A sheet metal contractor classification, and both exams must be
passed to obtain licensure .
Question 4
Which Nevada contractor classification covers "Using Sheet Metal" work?
A) C-13
B) C-25A
C) C-21
D) C-39
Correct Answer: A
Nevada C-25A Sheet Metal Contractor EXAM QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
Nevada C-25A Sheet Metal Contractor Exam
10-Line Exam Coverage in Points Form
1. Licensing & Regulations – Nevada State Contractors Board (NSCB) jurisdiction and
licensing requirements , C-13 "Using Sheet Metal" classification (C-25A is a sub-
classification) , 4 years journey-level experience required within the preceding 10 years ,
70% passing score required for both exams , initial application fee $300, license/biennial
renewal $600, Residential Recovery Fund Assessment $200–$1,000 (residential
contractors), 4 reference certificates required from individuals with firsthand knowledge
of applicant's experience , two exams required (CMS + Trade) .
2. Contracts & Business Law – Four elements of a valid contract: offer, acceptance,
consideration, and legal purpose , lump sum/fixed-price contracts for large projects ,
cost-plus and time-and-materials contracts , change orders and addenda (modify scope,
schedule, and costs) , critical path method (CPM) for project scheduling , final project
closeout (transfer ownership, complete documentation, final inspections) .
3. Estimating & Project Management – Material take-offs quantify materials needed for
accurate cost estimation , equipment costs include rental fees, depreciation,
maintenance, and operational expenses , monitoring budget variances and managing
change orders promptly to control project costs , regular job costing and financial
tracking to maintain profitability , Gantt charts for visualizing project timelines .
4. Blueprint Reading & Specifications – Understanding scales, symbols, and specifications ,
standard symbol for rectangular duct is a rectangle with "R" inside , dashed (hidden)
lines indicate features not visible from current viewing angle , "4-0-0" notation = 4 feet,
0 inches, 0 ⅛-inch fractions , convert 96 inches to feet by dividing by 12 (8 feet) , section
views illustrate vertical relationships and interior details , mechanical specifications
detail insulation R-value (R-6 to R-8 typical for energy-efficient Nevada buildings) .
5. Fabrication & Layout – Brake is primary tool for creating bends in sheet metal , spot
welding fuses overlapping sheets at a specific point using resistance electric current ,
rivet set holds and aligns rivet while being driven or formed , hollow punch creates holes
(cuts a plug of material), solid punch marks or drives components , carbide-tipped
scriber creates fine, precise, permanent lines on metal , allowance = extra material
added to net dimensions for seams, locks, or hems , proper drill bit angle for steel
(denser, requires larger point angle to prevent wandering) .
6. Ductwork & HVAC Systems – SMACNA standards provide guidelines for duct
construction and installation , proper sealing of joints with mastic or sealant prevents air
leakage and ensures energy efficiency , sharp bends and fittings cause pressure loss due
, Page 2 of 134
to increased friction and turbulence , insulation R-value for ductwork specified in
mechanical specifications (R-6 to R-8 typical) .
7. Safety & OSHA Regulations – OSHA 29 CFR 1926 Subpart M mandates fall protection on
construction sites , proper ventilation and respiratory protection essential when welding
in confined spaces , welding fumes contain hazardous substances causing respiratory
issues , RCRA governs proper disposal and management of hazardous waste (solvents,
metals) , confined space entry protocols and proper PPE requirements .
8. Labor & Employment Law – FLSA establishes federal minimum wage, overtime, and
recordkeeping standards , worker classification determined by degree of control and
independence in work performed (employee vs independent contractor) , workers'
compensation insurance covers employee medical expenses and lost wages due to work-
related injuries .
9. Business Entities & Finance – Sole proprietorship provides least personal liability
protection (no separation between personal and business liabilities) , corporation and
LLC provide liability protection , line of credit is a short-term financing option for
managing cash flow needs , contractors license bonds required (amount determined by
NSCB) .
10. Project Documentation & Closeout – Final project closeout transfers ownership to
client, completes documentation, final inspections, obtaining approvals, and transferring
project documentation , addenda and change orders modify original plans affecting
scope, timeline, and budget , warranties (implied warranty that work will be free from
defects for a reasonable period) .
250 MCQ Questions with Rationales
Question 1
According to Nevada law, which agency is responsible for licensing sheet metal contractors in
the state?
A) Nevada Department of Business and Industry
B) Nevada State Contractors Board (NSCB)
, Page 3 of 134
C) Nevada Department of Transportation
D) Nevada Construction Industry Council
Correct Answer: B
Rationale: The Nevada State Contractors Board (NSCB) is the governing board that licenses and
regulates all contractors, including sheet metal contractors in the C-13 "Using Sheet Metal"
classification . The NSCB administers the examination process and enforces licensing
requirements under Nevada law .
Question 2
What is the minimum number of years of journey-level experience required for a Nevada sheet
metal contractor license?
A) 2 years
B) 3 years
C) 4 years
D) 5 years
Correct Answer: C
Rationale: Nevada requires a minimum of four years of experience as a journeyman, foreman,
supervising employee, or contractor in the specific trade classification . The experience must
have been obtained within the preceding ten years . Training received at an accredited college
or university may be used to satisfy a portion of the required experience .
, Page 4 of 134
Question 3
What is the passing score required for the Nevada sheet metal contractor examinations?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: Nevada requires a minimum passing score of 70% on both required examinations:
the Contractors Management Survey (CMS) exam and the applicable trade exam . The trade
exam is required for the C-25A sheet metal contractor classification, and both exams must be
passed to obtain licensure .
Question 4
Which Nevada contractor classification covers "Using Sheet Metal" work?
A) C-13
B) C-25A
C) C-21
D) C-39
Correct Answer: A
