CALIFORNIA REINFORCING STEEL
CONTRACTOR LICENSE EXAM ACTUAL 2026
VERIFIED QUESTIONS WITH ANSWERS
COMPREHENSIVE & RATIONALE
1. A reinforcing steel contractor in California is primarily regulated
under which licensing classification?
A. C-5
B. C-50
C. C-51
D. C-8
Answer: B. C-50
Rationale: The C-50 classification specifically covers reinforcing steel
contractor work, including placement, fabrication, and installation of
rebar in concrete structures.
2. What is the primary purpose of reinforcing steel in concrete
structures?
A. Increase flexibility
B. Reduce curing time
C. Resist tensile forces
D. Increase concrete volume
Answer: C. Resist tensile forces
Rationale: Concrete is strong in compression but weak in tension;
reinforcing steel compensates by handling tensile stresses.
3. Which document is most critical before placing rebar on a
construction project?
A. Material Safety Data Sheet
1
, B. Structural steel catalog
C. Approved structural drawings
D. Daily work log
Answer: C. Approved structural drawings
Rationale: Structural drawings define rebar size, spacing, placement,
and specifications required for compliance.
4. What does ASTM A615 primarily specify?
A. Welding procedures for steel
B. Deformed and plain carbon-steel bars for concrete
reinforcement
C. Concrete curing methods
D. Formwork design standards
Answer: B. Deformed and plain carbon-steel bars for concrete
reinforcement
Rationale: ASTM A615 is the standard specification for rebar used in
reinforced concrete construction.
5. What is the most common method used to tie rebar intersections?
A. Butt welding
B. Oxy-fuel welding
C. Wire tying
D. Adhesive bonding
Answer: C. Wire tying
Rationale: Wire tying is the standard method for securing rebar
intersections before concrete placement.
6. What is lap splice length primarily determined by?
A. Contractor preference
2
, B. Wind load only
C. Code requirements and bar diameter
D. Color of rebar coating
Answer: C. Code requirements and bar diameter
Rationale: Lap splice length depends on bar size, grade, concrete
strength, and building code specifications.
7. What is the primary hazard when handling reinforcing steel on
site?
A. Radiation exposure
B. Chemical burns
C. Cuts and impalement
D. Electrical shock only
Answer: C. Cuts and impalement
Rationale: Rebar is sharp and often exposed vertically, creating
significant injury risk.
8. Which tool is commonly used to cut rebar in the field?
A. Pipe wrench
B. Rebar cutter or hydraulic shear
C. Hand saw
D. Hammer drill
Answer: B. Rebar cutter or hydraulic shear
Rationale: Hydraulic cutters provide clean, efficient cuts suitable for
reinforcing steel.
9. What does rebar “grade” indicate?
A. Color coating
B. Tensile strength
3
, C. Length
D. Rust level
Answer: B. Tensile strength
Rationale: Grade reflects yield strength, which determines how much
stress the bar can withstand.
10. Which code governs building construction safety in
California?
A. NEC
B. OSHA
C. CBC
D. ACI Manual only
Answer: C. CBC
Rationale: The California Building Code (CBC) governs structural
and construction standards statewide.
11. What is the minimum concrete cover requirement typically
used for rebar in slabs exposed to weather?
A. 1/4 inch
B. 1 inch
C. 2 inches
D. 4 inches
Answer: C. 2 inches
Rationale: Exterior exposure requires more cover to protect steel from
corrosion and fire exposure.
12. What is the function of bar supports (chairs)?
A. Increase steel strength
B. Maintain correct rebar position within concrete
4
CONTRACTOR LICENSE EXAM ACTUAL 2026
VERIFIED QUESTIONS WITH ANSWERS
COMPREHENSIVE & RATIONALE
1. A reinforcing steel contractor in California is primarily regulated
under which licensing classification?
A. C-5
B. C-50
C. C-51
D. C-8
Answer: B. C-50
Rationale: The C-50 classification specifically covers reinforcing steel
contractor work, including placement, fabrication, and installation of
rebar in concrete structures.
2. What is the primary purpose of reinforcing steel in concrete
structures?
A. Increase flexibility
B. Reduce curing time
C. Resist tensile forces
D. Increase concrete volume
Answer: C. Resist tensile forces
Rationale: Concrete is strong in compression but weak in tension;
reinforcing steel compensates by handling tensile stresses.
3. Which document is most critical before placing rebar on a
construction project?
A. Material Safety Data Sheet
1
, B. Structural steel catalog
C. Approved structural drawings
D. Daily work log
Answer: C. Approved structural drawings
Rationale: Structural drawings define rebar size, spacing, placement,
and specifications required for compliance.
4. What does ASTM A615 primarily specify?
A. Welding procedures for steel
B. Deformed and plain carbon-steel bars for concrete
reinforcement
C. Concrete curing methods
D. Formwork design standards
Answer: B. Deformed and plain carbon-steel bars for concrete
reinforcement
Rationale: ASTM A615 is the standard specification for rebar used in
reinforced concrete construction.
5. What is the most common method used to tie rebar intersections?
A. Butt welding
B. Oxy-fuel welding
C. Wire tying
D. Adhesive bonding
Answer: C. Wire tying
Rationale: Wire tying is the standard method for securing rebar
intersections before concrete placement.
6. What is lap splice length primarily determined by?
A. Contractor preference
2
, B. Wind load only
C. Code requirements and bar diameter
D. Color of rebar coating
Answer: C. Code requirements and bar diameter
Rationale: Lap splice length depends on bar size, grade, concrete
strength, and building code specifications.
7. What is the primary hazard when handling reinforcing steel on
site?
A. Radiation exposure
B. Chemical burns
C. Cuts and impalement
D. Electrical shock only
Answer: C. Cuts and impalement
Rationale: Rebar is sharp and often exposed vertically, creating
significant injury risk.
8. Which tool is commonly used to cut rebar in the field?
A. Pipe wrench
B. Rebar cutter or hydraulic shear
C. Hand saw
D. Hammer drill
Answer: B. Rebar cutter or hydraulic shear
Rationale: Hydraulic cutters provide clean, efficient cuts suitable for
reinforcing steel.
9. What does rebar “grade” indicate?
A. Color coating
B. Tensile strength
3
, C. Length
D. Rust level
Answer: B. Tensile strength
Rationale: Grade reflects yield strength, which determines how much
stress the bar can withstand.
10. Which code governs building construction safety in
California?
A. NEC
B. OSHA
C. CBC
D. ACI Manual only
Answer: C. CBC
Rationale: The California Building Code (CBC) governs structural
and construction standards statewide.
11. What is the minimum concrete cover requirement typically
used for rebar in slabs exposed to weather?
A. 1/4 inch
B. 1 inch
C. 2 inches
D. 4 inches
Answer: C. 2 inches
Rationale: Exterior exposure requires more cover to protect steel from
corrosion and fire exposure.
12. What is the function of bar supports (chairs)?
A. Increase steel strength
B. Maintain correct rebar position within concrete
4
