CALIFORNIA C-50 REINFORCING STEEL
CONTRACTOR LICENSE EXAM ACTUAL PREP
QUESTIONS AND WELL REVISED ANSWERS -
LATEST AND COMPLETE UPDATE WITH VERIFIED
SOLUTIONS – ASSURES PASS
(trade portion topics include planning/estimating, fabrication, placement,
post-tensioned cables, and safety based on the official study guide). CSLB
1. What is the main purpose of reinforcing steel in concrete structures?
a. To increase concrete weight
b. b. To resist tensile forces
c. To improve concrete color
d. To prevent weathering
Reinforcing steel (rebar) handles tensile stresses that concrete alone cannot
resist. Docsity
2. Typical reinforcing bars in U.S. construction are commonly specified as:
a. Grade 40
b. b. Grade 60
c. Grade 80
d. Grade 25
Grade 60 (60,000 psi yield strength) is the most widely used rebar grade.
Docsity
3. A “#4 bar” refers to a bar with a nominal diameter of:
a. 1/4 inch
b. b. 1/2 inch
c. 3/4 inch
d. 1 inch
, Bar numbers correspond to diameter in eighths of an inch (#4 = 4/8 =
1/2”). Docsity
4. Minimum lap splice length in tension for Grade 60 bars is typically:
a. 24 bar diameters
b. b. 40 bar diameters
c. 60 bar diameters
d. 80 bar diameters
ACI standards commonly require 40 bar diameters for tension splices.
Docsity
5. Epoxy coating on reinforcing steel is used to:
a. Increase tensile strength
b. Change color
c. c. Protect against corrosion
d. Improve welding performance
Epoxy reduces corrosion risk in harsh environments. Docsity
6. Which organization provides reinforced concrete codes and standards?
a. American Contractors Institute
b. b. American Concrete Institute (ACI)
c. American Construction Industry
d. Association of Roofers
ACI publishes concrete design and construction standards. Docsity
7. What type of test ensures rebar meets strength requirements?
a. Hardness test
b. Impact test
c. c. Tensile test
d. Flex test
Tensile tests measure yield and ultimate strength. Docsity
,8. Welded wire fabric (WWF) is often used in:
a. Columns only
b. Beams only
c. c. Pavement slabs
d. Roof structures
WWF helps control cracking in slabs and pavements. Docsity
9. Spacers and chairs are used to:
a. Reduce steel quantity
b. Increase bar weight
c. c. Maintain correct cover and positioning
d. Act as stirrups
They support rebar to ensure proper concrete cover. Docsity
10.What is the function of stirrups in beams?
a. Main longitudinal reinforcement
b. Provide decorative finishes
c. c. Shear reinforcement
d. Cover protection
Stirrups resist shear and keep bars in position. Docsity
11.In two-way slabs, reinforcement is provided:
a. Only in one direction
b. b. In both directions
c. Only at edges
d. Only near supports
Two-way slabs distribute loads in both directions. Docsity
12.Transverse reinforcement in columns primarily:
a. Increases bar diameter
b. b. Provides confinement
, c. Resists tensile forces
d. Prevents rust
Transverse ties help confine concrete core and prevent buckling. Docsity
13.The term “caging” refers to:
a. Wrapping bars with plastic
b. b. Assembling reinforcement into a cage shape
c. Cutting bars
d. Delivering bars on site
Caging organizes bars for beams, columns, footings prior to placement.
Docsity
14.A common rebar size with a 1-inch diameter is:
a. #6
b. #7
c. c. #8
d. #9
#8 bar equals 8/8 = 1-inch nominal diameter. Docsity
15.Weldable reinforcing bar grade typically specified is:
a. A615 only
b. b. ASTM A706
c. A572
d. A36
ASTM A706 is designated as weldable rebar. Docsity
16.The primary material for reinforcing bars is:
a. Aluminum
b. Copper
c. c. Carbon steel
CONTRACTOR LICENSE EXAM ACTUAL PREP
QUESTIONS AND WELL REVISED ANSWERS -
LATEST AND COMPLETE UPDATE WITH VERIFIED
SOLUTIONS – ASSURES PASS
(trade portion topics include planning/estimating, fabrication, placement,
post-tensioned cables, and safety based on the official study guide). CSLB
1. What is the main purpose of reinforcing steel in concrete structures?
a. To increase concrete weight
b. b. To resist tensile forces
c. To improve concrete color
d. To prevent weathering
Reinforcing steel (rebar) handles tensile stresses that concrete alone cannot
resist. Docsity
2. Typical reinforcing bars in U.S. construction are commonly specified as:
a. Grade 40
b. b. Grade 60
c. Grade 80
d. Grade 25
Grade 60 (60,000 psi yield strength) is the most widely used rebar grade.
Docsity
3. A “#4 bar” refers to a bar with a nominal diameter of:
a. 1/4 inch
b. b. 1/2 inch
c. 3/4 inch
d. 1 inch
, Bar numbers correspond to diameter in eighths of an inch (#4 = 4/8 =
1/2”). Docsity
4. Minimum lap splice length in tension for Grade 60 bars is typically:
a. 24 bar diameters
b. b. 40 bar diameters
c. 60 bar diameters
d. 80 bar diameters
ACI standards commonly require 40 bar diameters for tension splices.
Docsity
5. Epoxy coating on reinforcing steel is used to:
a. Increase tensile strength
b. Change color
c. c. Protect against corrosion
d. Improve welding performance
Epoxy reduces corrosion risk in harsh environments. Docsity
6. Which organization provides reinforced concrete codes and standards?
a. American Contractors Institute
b. b. American Concrete Institute (ACI)
c. American Construction Industry
d. Association of Roofers
ACI publishes concrete design and construction standards. Docsity
7. What type of test ensures rebar meets strength requirements?
a. Hardness test
b. Impact test
c. c. Tensile test
d. Flex test
Tensile tests measure yield and ultimate strength. Docsity
,8. Welded wire fabric (WWF) is often used in:
a. Columns only
b. Beams only
c. c. Pavement slabs
d. Roof structures
WWF helps control cracking in slabs and pavements. Docsity
9. Spacers and chairs are used to:
a. Reduce steel quantity
b. Increase bar weight
c. c. Maintain correct cover and positioning
d. Act as stirrups
They support rebar to ensure proper concrete cover. Docsity
10.What is the function of stirrups in beams?
a. Main longitudinal reinforcement
b. Provide decorative finishes
c. c. Shear reinforcement
d. Cover protection
Stirrups resist shear and keep bars in position. Docsity
11.In two-way slabs, reinforcement is provided:
a. Only in one direction
b. b. In both directions
c. Only at edges
d. Only near supports
Two-way slabs distribute loads in both directions. Docsity
12.Transverse reinforcement in columns primarily:
a. Increases bar diameter
b. b. Provides confinement
, c. Resists tensile forces
d. Prevents rust
Transverse ties help confine concrete core and prevent buckling. Docsity
13.The term “caging” refers to:
a. Wrapping bars with plastic
b. b. Assembling reinforcement into a cage shape
c. Cutting bars
d. Delivering bars on site
Caging organizes bars for beams, columns, footings prior to placement.
Docsity
14.A common rebar size with a 1-inch diameter is:
a. #6
b. #7
c. c. #8
d. #9
#8 bar equals 8/8 = 1-inch nominal diameter. Docsity
15.Weldable reinforcing bar grade typically specified is:
a. A615 only
b. b. ASTM A706
c. A572
d. A36
ASTM A706 is designated as weldable rebar. Docsity
16.The primary material for reinforcing bars is:
a. Aluminum
b. Copper
c. c. Carbon steel
