CT Major Structural Contractor Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
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1. Which type of foundation is generally most appropriate when
competent bearing soil is located near the ground surface?
A. Deep pile foundation
B. Caisson foundation
C. Shallow spread footing
D. Driven micropile foundation
Rationale: Shallow spread footings are commonly used when suitable
bearing soil is available close to the surface. They distribute structural
loads over a larger area of soil and are generally more economical
than deep foundations when deep load transfer is unnecessary.
2. What is the primary purpose of reinforcing steel in a reinforced
concrete beam?
,A. To increase concrete workability
B. To prevent concrete hydration
C. To resist tensile stresses
D. To reduce the beam's dead load
Rationale: Concrete is strong in compression but relatively weak in
tension. Reinforcing steel is placed primarily in tension zones of beams
to resist tensile forces and help the concrete member carry bending
loads.
3. Which condition is most likely to cause differential settlement
beneath a building?
A. Uniform soil density
B. Consistent foundation loading
C. Variable soil bearing capacity
D. Properly compacted fill
Rationale: Differential settlement occurs when different portions of a
structure settle by different amounts. Variations in soil type, moisture,
compaction, or bearing capacity can cause uneven settlement and
potentially damage structural components.
4. What is the primary purpose of a construction joint in a concrete
structure?
,A. To eliminate reinforcement
B. To increase concrete temperature
C. To provide a planned location for stopping and continuing concrete
placement
D. To prevent all concrete shrinkage
Rationale: Construction joints are intentionally located where
concrete placement must stop and later resume. Proper joint
preparation and reinforcement continuity help maintain structural
performance.
5. Which test is commonly used to evaluate the consistency and
workability of freshly mixed concrete?
A. Proctor test
B. Atterberg limits test
C. Slump test
D. Rockwell test
Rationale: The concrete slump test measures the consistency of freshly
mixed concrete. It provides an indication of workability and can help
identify significant variations in the concrete mixture.
6. What is the primary purpose of curing concrete after placement?
, A. To remove all moisture immediately
B. To increase evaporation
C. To promote cement hydration and strength development
D. To prevent cement from hardening
Rationale: Proper curing maintains suitable moisture and temperature
conditions so cement hydration can continue. Adequate curing
improves strength, durability, and resistance to cracking.
7. Which type of structural load is produced by the permanent
weight of a building's components?
A. Live load
B. Impact load
C. Wind load
D. Dead load
Rationale: Dead loads are permanent or relatively constant loads
resulting from structural and permanently attached components such
as floors, roofs, walls, beams, and fixed equipment.
8. Which load is generally classified as a live load?
A. Weight of a concrete slab
B. Weight of structural steel
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1. Which type of foundation is generally most appropriate when
competent bearing soil is located near the ground surface?
A. Deep pile foundation
B. Caisson foundation
C. Shallow spread footing
D. Driven micropile foundation
Rationale: Shallow spread footings are commonly used when suitable
bearing soil is available close to the surface. They distribute structural
loads over a larger area of soil and are generally more economical
than deep foundations when deep load transfer is unnecessary.
2. What is the primary purpose of reinforcing steel in a reinforced
concrete beam?
,A. To increase concrete workability
B. To prevent concrete hydration
C. To resist tensile stresses
D. To reduce the beam's dead load
Rationale: Concrete is strong in compression but relatively weak in
tension. Reinforcing steel is placed primarily in tension zones of beams
to resist tensile forces and help the concrete member carry bending
loads.
3. Which condition is most likely to cause differential settlement
beneath a building?
A. Uniform soil density
B. Consistent foundation loading
C. Variable soil bearing capacity
D. Properly compacted fill
Rationale: Differential settlement occurs when different portions of a
structure settle by different amounts. Variations in soil type, moisture,
compaction, or bearing capacity can cause uneven settlement and
potentially damage structural components.
4. What is the primary purpose of a construction joint in a concrete
structure?
,A. To eliminate reinforcement
B. To increase concrete temperature
C. To provide a planned location for stopping and continuing concrete
placement
D. To prevent all concrete shrinkage
Rationale: Construction joints are intentionally located where
concrete placement must stop and later resume. Proper joint
preparation and reinforcement continuity help maintain structural
performance.
5. Which test is commonly used to evaluate the consistency and
workability of freshly mixed concrete?
A. Proctor test
B. Atterberg limits test
C. Slump test
D. Rockwell test
Rationale: The concrete slump test measures the consistency of freshly
mixed concrete. It provides an indication of workability and can help
identify significant variations in the concrete mixture.
6. What is the primary purpose of curing concrete after placement?
, A. To remove all moisture immediately
B. To increase evaporation
C. To promote cement hydration and strength development
D. To prevent cement from hardening
Rationale: Proper curing maintains suitable moisture and temperature
conditions so cement hydration can continue. Adequate curing
improves strength, durability, and resistance to cracking.
7. Which type of structural load is produced by the permanent
weight of a building's components?
A. Live load
B. Impact load
C. Wind load
D. Dead load
Rationale: Dead loads are permanent or relatively constant loads
resulting from structural and permanently attached components such
as floors, roofs, walls, beams, and fixed equipment.
8. Which load is generally classified as a live load?
A. Weight of a concrete slab
B. Weight of structural steel
