Arizona B-1 General Commercial
Contractor Examination Practice Exam
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A
Instant Download Pdf
1. Which project delivery method places the responsibility for both design and
construction under one contract?
A. Design-Bid-Build
B. Construction Management at Risk
C. Design-Build
D. Multiple Prime Contracts
Answer: C. Design-Build
Rationale: Design-Build combines design and construction services into a single
contract, streamlining communication, reducing disputes, and potentially
shortening project duration.
2. What is the primary purpose of a construction contract?
A. To estimate material quantities
B. To define the rights and obligations of all parties
C. To guarantee project profit
D. To eliminate project risks
,Answer: B. To define the rights and obligations of all parties
Rationale: A construction contract establishes responsibilities, payment terms,
timelines, dispute resolution procedures, and legal obligations between the
owner and contractor.
3. Which foundation type is most commonly used for commercial buildings
with moderate loads?
A. Pier foundation
B. Mat foundation
C. Spread footing foundation
D. Floating foundation
Answer: C. Spread footing foundation
Rationale: Spread footings distribute structural loads over a larger soil area and
are commonly used where soil conditions are adequate.
4. Which soil type generally provides the highest bearing capacity?
A. Organic soil
B. Silt
C. Clay
D. Dense gravel
Answer: D. Dense gravel
Rationale: Dense gravel offers excellent drainage and high load-bearing
capacity, making it suitable for supporting commercial structures.
5. Before excavation begins, a contractor should first:
A. Install roofing
B. Pour concrete
, C. Order finish materials
D. Locate underground utilities
Answer: D. Locate underground utilities
Rationale: Utility locating prevents damage to buried infrastructure and protects
workers from serious hazards.
6. Concrete reaches its specified design strength after approximately:
A. 3 days
B. 7 days
C. 14 days
D. 28 days
Answer: D. 28 days
Rationale: Concrete strength is typically based on compressive testing
performed after 28 days of proper curing.
7. What is the main function of reinforcing steel in concrete?
A. Waterproofing
B. Reducing curing time
C. Providing tensile strength
D. Increasing slump
Answer: C. Providing tensile strength
Rationale: Concrete is strong in compression but weak in tension, so reinforcing
steel resists tensile forces.
8. Which roofing system is commonly used on low-slope commercial
buildings?
A. Asphalt shingles
B. Wood shakes
, C. Clay tile
D. Single-ply membrane
Answer: D. Single-ply membrane
Rationale: Single-ply membrane systems such as TPO and PVC are widely used
because of durability and ease of installation.
9. The critical path in a project schedule identifies:
A. Lowest-cost activities
B. Optional tasks
C. Inspection dates
D. Activities that determine the project duration
Answer: D. Activities that determine the project duration
Rationale: Any delay to a critical path activity delays the overall project
completion unless corrective action is taken.
10.A change order is used to:
A. Hire subcontractors
B. Purchase equipment
C. Modify the original contract scope, cost, or schedule
D. Cancel permits
Answer: C. Modify the original contract scope, cost, or schedule
Rationale: Change orders document agreed-upon revisions to project
requirements after contract execution.
11.Which OSHA document identifies chemical hazards in the workplace?
A. Punch list
B. Warranty
Contractor Examination Practice Exam
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A
Instant Download Pdf
1. Which project delivery method places the responsibility for both design and
construction under one contract?
A. Design-Bid-Build
B. Construction Management at Risk
C. Design-Build
D. Multiple Prime Contracts
Answer: C. Design-Build
Rationale: Design-Build combines design and construction services into a single
contract, streamlining communication, reducing disputes, and potentially
shortening project duration.
2. What is the primary purpose of a construction contract?
A. To estimate material quantities
B. To define the rights and obligations of all parties
C. To guarantee project profit
D. To eliminate project risks
,Answer: B. To define the rights and obligations of all parties
Rationale: A construction contract establishes responsibilities, payment terms,
timelines, dispute resolution procedures, and legal obligations between the
owner and contractor.
3. Which foundation type is most commonly used for commercial buildings
with moderate loads?
A. Pier foundation
B. Mat foundation
C. Spread footing foundation
D. Floating foundation
Answer: C. Spread footing foundation
Rationale: Spread footings distribute structural loads over a larger soil area and
are commonly used where soil conditions are adequate.
4. Which soil type generally provides the highest bearing capacity?
A. Organic soil
B. Silt
C. Clay
D. Dense gravel
Answer: D. Dense gravel
Rationale: Dense gravel offers excellent drainage and high load-bearing
capacity, making it suitable for supporting commercial structures.
5. Before excavation begins, a contractor should first:
A. Install roofing
B. Pour concrete
, C. Order finish materials
D. Locate underground utilities
Answer: D. Locate underground utilities
Rationale: Utility locating prevents damage to buried infrastructure and protects
workers from serious hazards.
6. Concrete reaches its specified design strength after approximately:
A. 3 days
B. 7 days
C. 14 days
D. 28 days
Answer: D. 28 days
Rationale: Concrete strength is typically based on compressive testing
performed after 28 days of proper curing.
7. What is the main function of reinforcing steel in concrete?
A. Waterproofing
B. Reducing curing time
C. Providing tensile strength
D. Increasing slump
Answer: C. Providing tensile strength
Rationale: Concrete is strong in compression but weak in tension, so reinforcing
steel resists tensile forces.
8. Which roofing system is commonly used on low-slope commercial
buildings?
A. Asphalt shingles
B. Wood shakes
, C. Clay tile
D. Single-ply membrane
Answer: D. Single-ply membrane
Rationale: Single-ply membrane systems such as TPO and PVC are widely used
because of durability and ease of installation.
9. The critical path in a project schedule identifies:
A. Lowest-cost activities
B. Optional tasks
C. Inspection dates
D. Activities that determine the project duration
Answer: D. Activities that determine the project duration
Rationale: Any delay to a critical path activity delays the overall project
completion unless corrective action is taken.
10.A change order is used to:
A. Hire subcontractors
B. Purchase equipment
C. Modify the original contract scope, cost, or schedule
D. Cancel permits
Answer: C. Modify the original contract scope, cost, or schedule
Rationale: Change orders document agreed-upon revisions to project
requirements after contract execution.
11.Which OSHA document identifies chemical hazards in the workplace?
A. Punch list
B. Warranty
