Reinforcing Steel Contractor Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales
2025|2026 Q&A | Instant Download Pdf
1. What is the primary purpose of reinforcing steel in concrete
structures?
a) To resist compression forces
b) To resist tensile forces
c) To increase weight of structure
d) To prevent shrinkage
Reinforcing steel is mainly used to handle tensile stresses, which
concrete alone is weak in resisting.
2. What is the typical grade of reinforcing steel used in construction in
the U.S.?
, a) Grade 40
b) Grade 60
c) Grade 80
d) Grade 25
Grade 60 reinforcing steel (60,000 psi yield strength) is most commonly
specified.
3. What does “#4 bar” mean in reinforcing steel terminology?
a) Bar weighing 4 pounds per foot
b) Bar with diameter of 1/2 inch
c) Bar with cross-sectional area of 4 in²
d) Bar 4 feet long
Bar numbers correspond to diameter in eighths of an inch; #4 = 4/8
inch = 1/2 inch.
4. What is the minimum lap splice length for Grade 60 reinforcing bars in
tension (normal weight concrete, 3000 psi)?
a) 24 bar diameters
b) 36 bar diameters
c) 40 bar diameters
d) 60 bar diameters
Lap splice lengths are typically 40 bar diameters in tension for Grade
60 bars in standard conditions.
5. What does epoxy coating on reinforcing steel provide?
a) Strength increase
, b) Fire resistance
c) Corrosion resistance
d) Better weldability
Epoxy-coated bars protect against corrosion, especially in areas
exposed to moisture and salts.
6. What tool is commonly used to tie reinforcing steel?
a) Drill gun
b) Tie wire and pliers
c) Welding torch
d) Rivet gun
Reinforcing bars are fastened together with tie wire using pliers or
twisting tools.
7. Which splice is stronger and more reliable?
a) Lap splice
b) Wire tie
c) Mechanical splice
d) Tack weld
Mechanical splices ensure direct load transfer and are more reliable
than lap splicing.
8. What is the primary reason concrete cover is required over reinforcing
steel?
a) To reduce weight
b) To align bars
, c) To protect against corrosion and fire
d) To increase tensile strength
Concrete cover shields steel from moisture, chemicals, and fire.
9. What does ACI stand for in reinforced concrete construction?
a) American Contractors Institute
b) Association of Concrete Inspectors
c) American Concrete Institute
d) American Construction Industry
ACI provides codes, specifications, and standards for concrete
construction.
10. Which test ensures reinforcing bars meet specified strength
requirements?
a) Impact test
b) Ultrasonic test
c) Tensile test
d) Hardness test
Tensile testing measures yield strength and ultimate tensile strength of
reinforcing bars.
11. Which bar size has a nominal diameter of 1 inch?
a) #6
b) #7
c) #8
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales
2025|2026 Q&A | Instant Download Pdf
1. What is the primary purpose of reinforcing steel in concrete
structures?
a) To resist compression forces
b) To resist tensile forces
c) To increase weight of structure
d) To prevent shrinkage
Reinforcing steel is mainly used to handle tensile stresses, which
concrete alone is weak in resisting.
2. What is the typical grade of reinforcing steel used in construction in
the U.S.?
, a) Grade 40
b) Grade 60
c) Grade 80
d) Grade 25
Grade 60 reinforcing steel (60,000 psi yield strength) is most commonly
specified.
3. What does “#4 bar” mean in reinforcing steel terminology?
a) Bar weighing 4 pounds per foot
b) Bar with diameter of 1/2 inch
c) Bar with cross-sectional area of 4 in²
d) Bar 4 feet long
Bar numbers correspond to diameter in eighths of an inch; #4 = 4/8
inch = 1/2 inch.
4. What is the minimum lap splice length for Grade 60 reinforcing bars in
tension (normal weight concrete, 3000 psi)?
a) 24 bar diameters
b) 36 bar diameters
c) 40 bar diameters
d) 60 bar diameters
Lap splice lengths are typically 40 bar diameters in tension for Grade
60 bars in standard conditions.
5. What does epoxy coating on reinforcing steel provide?
a) Strength increase
, b) Fire resistance
c) Corrosion resistance
d) Better weldability
Epoxy-coated bars protect against corrosion, especially in areas
exposed to moisture and salts.
6. What tool is commonly used to tie reinforcing steel?
a) Drill gun
b) Tie wire and pliers
c) Welding torch
d) Rivet gun
Reinforcing bars are fastened together with tie wire using pliers or
twisting tools.
7. Which splice is stronger and more reliable?
a) Lap splice
b) Wire tie
c) Mechanical splice
d) Tack weld
Mechanical splices ensure direct load transfer and are more reliable
than lap splicing.
8. What is the primary reason concrete cover is required over reinforcing
steel?
a) To reduce weight
b) To align bars
, c) To protect against corrosion and fire
d) To increase tensile strength
Concrete cover shields steel from moisture, chemicals, and fire.
9. What does ACI stand for in reinforced concrete construction?
a) American Contractors Institute
b) Association of Concrete Inspectors
c) American Concrete Institute
d) American Construction Industry
ACI provides codes, specifications, and standards for concrete
construction.
10. Which test ensures reinforcing bars meet specified strength
requirements?
a) Impact test
b) Ultrasonic test
c) Tensile test
d) Hardness test
Tensile testing measures yield strength and ultimate tensile strength of
reinforcing bars.
11. Which bar size has a nominal diameter of 1 inch?
a) #6
b) #7
c) #8
