NEVADA C-5 CONCRETE CONTRACTOR
EXAM With Actual Questions &
Verified Answers ,Plus Explained
Rationales/Expert Verified For
Guaranteed Pass 2026/Latest
Update/Instant Download Pdf
1. A person licensed under the C-5 classification may:
A) Frame and finish carpentry work only
B) Pour, place, finish and install concrete; formulates and
constructs forms; saw, cut, drill and core concrete and asphaltic
paving material
C) Install electrical systems in concrete structures
D) Only perform decorative concrete overlays
Answer: B
Rationale: The scope of work for C-5 includes preparing
surfaces, placing reinforcement, pouring, placing, finishing
and installing concrete, constructing forms, and saw-cutting,
drilling or coring concrete/asphaltic paving.
2. Before beginning concrete placement, what is a critical step for
forms?
A) Painting the forms in a contrasting color
B) Verifying that formwork is level, plumb, braced and free of
debris
C) Leaving the formwork loose so adjustments can be made
, during pour
D) Ensuring the forms are completely sealed before placing any
reinforcement
Answer: B
Rationale: Proper formwork must be level, plumb, well-braced
and free from debris to support the concrete load and ensure
correct geometry and finish.
3. What is the standard general-purpose Portland cement type
commonly used in residential slab-on-grade concrete?
A) Type IV
B) Type V
C) Type I
D) Type III
Answer: C
Rationale: Type I Portland cement is the most common
general-purpose cement used for typical residential slabs.
4. For a 4-inch thick slab, how deep should control joints typically
be cut?
A) ½ inch
B) 1 inch
C) 2 inches
D) Full depth
Answer: B
Rationale: A typical guideline is to cut control joints about ¼ of
the slab thickness (so ~1 inch for a 4-inch slab) to help control
shrinkage cracking.
5. What is the primary purpose of control joints in a concrete
slab?
A) To increase the compressive strength
, B) To add aesthetic patterning
C) To control location of shrinkage cracks
D) To act as reinforcement
Answer: C
Rationale: Control joints are placed to manage cracking due to
shrinkage and temperature changes by providing a
predetermined plane of weakness.
6. Which of the following ASTM standards covers deformed and
plain carbon-steel reinforcing bars used in concrete?
A) ASTM A36
B) ASTM C150
C) ASTM A615
D) ASTM A706
Answer: C
Rationale: ASTM A615 covers deformed and plain carbon-steel
bars for concrete reinforcement.
7. What is a recommended curing method for large concrete slabs
in hot, dry climates (such as in parts of Nevada)?
A) Leave uncovered and exposed to direct sun
B) Apply continuous water spray
C) Use steam curing
D) Use plastic sheeting only without wetting
Answer: B
Rationale: Continuous water spray (or ponding) helps prevent
rapid evaporation in hot dry climates, promoting hydration
and strength gain.
8. Which section of the federal regulations covers respiratory
protection in the construction industry, relevant to concrete
cutting and silica exposure?
, A) 29 CFR 1910.134
B) 29 CFR 1910.120
C) 29 CFR 1926.1153
D) 29 CFR 1926.501
Answer: A
Rationale: 29 CFR 1910.134 covers respiratory protection
requirements generally; however, silica exposure in
construction is specifically addressed in 29 CFR 1926.1153 (but
respiratory protection is referenced under 1910.134).
9. Which Nevada trade exam content area, according to the exam
outline for C-5, covers 12 items of the total 60 questions?
A) Safety
B) Concrete – Cutting
C) Concrete – Formwork
D) Concrete – Reinforcement
Answer: C
Rationale: The content outline lists “Concrete – Formwork” as
12 items for the C-5 exam.
10. What minimum percentage of questions must be correctly
answered to pass the C-5 exam (60-question version)?
A) 60%
B) 65%
C) 70%
D) 75%
Answer: C
Rationale: For the C-5 exam (60 questions), a minimum
passing score is 42 correct answers, which is 70%.
11. Wet concrete is highly alkaline and can cause skin
irritation or burns. Which PPE is essential to protect workers’
EXAM With Actual Questions &
Verified Answers ,Plus Explained
Rationales/Expert Verified For
Guaranteed Pass 2026/Latest
Update/Instant Download Pdf
1. A person licensed under the C-5 classification may:
A) Frame and finish carpentry work only
B) Pour, place, finish and install concrete; formulates and
constructs forms; saw, cut, drill and core concrete and asphaltic
paving material
C) Install electrical systems in concrete structures
D) Only perform decorative concrete overlays
Answer: B
Rationale: The scope of work for C-5 includes preparing
surfaces, placing reinforcement, pouring, placing, finishing
and installing concrete, constructing forms, and saw-cutting,
drilling or coring concrete/asphaltic paving.
2. Before beginning concrete placement, what is a critical step for
forms?
A) Painting the forms in a contrasting color
B) Verifying that formwork is level, plumb, braced and free of
debris
C) Leaving the formwork loose so adjustments can be made
, during pour
D) Ensuring the forms are completely sealed before placing any
reinforcement
Answer: B
Rationale: Proper formwork must be level, plumb, well-braced
and free from debris to support the concrete load and ensure
correct geometry and finish.
3. What is the standard general-purpose Portland cement type
commonly used in residential slab-on-grade concrete?
A) Type IV
B) Type V
C) Type I
D) Type III
Answer: C
Rationale: Type I Portland cement is the most common
general-purpose cement used for typical residential slabs.
4. For a 4-inch thick slab, how deep should control joints typically
be cut?
A) ½ inch
B) 1 inch
C) 2 inches
D) Full depth
Answer: B
Rationale: A typical guideline is to cut control joints about ¼ of
the slab thickness (so ~1 inch for a 4-inch slab) to help control
shrinkage cracking.
5. What is the primary purpose of control joints in a concrete
slab?
A) To increase the compressive strength
, B) To add aesthetic patterning
C) To control location of shrinkage cracks
D) To act as reinforcement
Answer: C
Rationale: Control joints are placed to manage cracking due to
shrinkage and temperature changes by providing a
predetermined plane of weakness.
6. Which of the following ASTM standards covers deformed and
plain carbon-steel reinforcing bars used in concrete?
A) ASTM A36
B) ASTM C150
C) ASTM A615
D) ASTM A706
Answer: C
Rationale: ASTM A615 covers deformed and plain carbon-steel
bars for concrete reinforcement.
7. What is a recommended curing method for large concrete slabs
in hot, dry climates (such as in parts of Nevada)?
A) Leave uncovered and exposed to direct sun
B) Apply continuous water spray
C) Use steam curing
D) Use plastic sheeting only without wetting
Answer: B
Rationale: Continuous water spray (or ponding) helps prevent
rapid evaporation in hot dry climates, promoting hydration
and strength gain.
8. Which section of the federal regulations covers respiratory
protection in the construction industry, relevant to concrete
cutting and silica exposure?
, A) 29 CFR 1910.134
B) 29 CFR 1910.120
C) 29 CFR 1926.1153
D) 29 CFR 1926.501
Answer: A
Rationale: 29 CFR 1910.134 covers respiratory protection
requirements generally; however, silica exposure in
construction is specifically addressed in 29 CFR 1926.1153 (but
respiratory protection is referenced under 1910.134).
9. Which Nevada trade exam content area, according to the exam
outline for C-5, covers 12 items of the total 60 questions?
A) Safety
B) Concrete – Cutting
C) Concrete – Formwork
D) Concrete – Reinforcement
Answer: C
Rationale: The content outline lists “Concrete – Formwork” as
12 items for the C-5 exam.
10. What minimum percentage of questions must be correctly
answered to pass the C-5 exam (60-question version)?
A) 60%
B) 65%
C) 70%
D) 75%
Answer: C
Rationale: For the C-5 exam (60 questions), a minimum
passing score is 42 correct answers, which is 70%.
11. Wet concrete is highly alkaline and can cause skin
irritation or burns. Which PPE is essential to protect workers’
