CO General Contractor Class C Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1. What is the primary purpose of a construction project’s critical
path?
A. To identify the least expensive subcontractors
B. To determine the activities that control the project completion date
C. To establish the contractor’s profit margin
D. To determine the quantity of materials required
Answer: B. To determine the activities that control the project
completion date
Rationale: The critical path consists of activities that determine the
minimum time required to complete a project. A delay in a critical-
path activity can delay the entire project unless corrective action is
taken. It is therefore an essential scheduling and project-control tool.
, 2. Which document typically establishes the contractual
requirements, materials, workmanship standards, and
administrative procedures for a construction project?
A. Daily job log
B. Specification manual
C. Equipment inventory
D. Material delivery ticket
Answer: B. Specification manual
Rationale: Specifications establish detailed requirements for
materials, products, workmanship, testing, installation, and other
contractual obligations. Drawings show graphical information, while
specifications provide written requirements that supplement the
drawings.
3. Before beginning excavation for a foundation, what should be
verified first?
A. The interior paint colors
B. The location of underground utilities
C. The final landscaping design
D. The cabinet hardware schedule
Answer: B. The location of underground utilities
,Rationale: Underground utility locations must be identified before
excavation begins to reduce the risk of striking electrical, gas, water,
communication, or other buried services. Utility locating is an
important safety and planning requirement.
4. Which type of concrete failure occurs when reinforcing steel
corrodes and causes the surrounding concrete to crack or spall?
A. Plastic shrinkage
B. Reinforcement corrosion
C. Thermal expansion
D. Aggregate segregation
Answer: B. Reinforcement corrosion
Rationale: When reinforcing steel corrodes, the corrosion products
occupy greater volume than the original steel. This expansion creates
internal pressure in the concrete, which can produce cracking,
delamination, and eventually spalling.
5. What is the primary purpose of reinforcing steel in a typical
reinforced-concrete beam?
A. To increase concrete's resistance to tension
B. To eliminate the need for formwork
, C. To reduce the weight of aggregate
D. To prevent all concrete shrinkage
Answer: A. To increase concrete's resistance to tension
Rationale: Concrete performs well in compression but has relatively
low tensile strength. Reinforcing steel is placed where tensile stresses
are expected so that the steel carries much of the tension while the
concrete primarily carries compression.
6. What does a construction project’s submittal process primarily
accomplish?
A. It transfers ownership of the project to the contractor
B. It allows required materials, products, and equipment information to
be reviewed before use
C. It eliminates the need for construction drawings
D. It establishes the contractor's tax liability
Answer: B. It allows required materials, products, and equipment
information to be reviewed before use
Rationale: Submittals such as shop drawings, product data, samples,
and equipment information allow the appropriate project participants
to verify compliance with the contract documents before fabrication
or installation.
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1. What is the primary purpose of a construction project’s critical
path?
A. To identify the least expensive subcontractors
B. To determine the activities that control the project completion date
C. To establish the contractor’s profit margin
D. To determine the quantity of materials required
Answer: B. To determine the activities that control the project
completion date
Rationale: The critical path consists of activities that determine the
minimum time required to complete a project. A delay in a critical-
path activity can delay the entire project unless corrective action is
taken. It is therefore an essential scheduling and project-control tool.
, 2. Which document typically establishes the contractual
requirements, materials, workmanship standards, and
administrative procedures for a construction project?
A. Daily job log
B. Specification manual
C. Equipment inventory
D. Material delivery ticket
Answer: B. Specification manual
Rationale: Specifications establish detailed requirements for
materials, products, workmanship, testing, installation, and other
contractual obligations. Drawings show graphical information, while
specifications provide written requirements that supplement the
drawings.
3. Before beginning excavation for a foundation, what should be
verified first?
A. The interior paint colors
B. The location of underground utilities
C. The final landscaping design
D. The cabinet hardware schedule
Answer: B. The location of underground utilities
,Rationale: Underground utility locations must be identified before
excavation begins to reduce the risk of striking electrical, gas, water,
communication, or other buried services. Utility locating is an
important safety and planning requirement.
4. Which type of concrete failure occurs when reinforcing steel
corrodes and causes the surrounding concrete to crack or spall?
A. Plastic shrinkage
B. Reinforcement corrosion
C. Thermal expansion
D. Aggregate segregation
Answer: B. Reinforcement corrosion
Rationale: When reinforcing steel corrodes, the corrosion products
occupy greater volume than the original steel. This expansion creates
internal pressure in the concrete, which can produce cracking,
delamination, and eventually spalling.
5. What is the primary purpose of reinforcing steel in a typical
reinforced-concrete beam?
A. To increase concrete's resistance to tension
B. To eliminate the need for formwork
, C. To reduce the weight of aggregate
D. To prevent all concrete shrinkage
Answer: A. To increase concrete's resistance to tension
Rationale: Concrete performs well in compression but has relatively
low tensile strength. Reinforcing steel is placed where tensile stresses
are expected so that the steel carries much of the tension while the
concrete primarily carries compression.
6. What does a construction project’s submittal process primarily
accomplish?
A. It transfers ownership of the project to the contractor
B. It allows required materials, products, and equipment information to
be reviewed before use
C. It eliminates the need for construction drawings
D. It establishes the contractor's tax liability
Answer: B. It allows required materials, products, and equipment
information to be reviewed before use
Rationale: Submittals such as shop drawings, product data, samples,
and equipment information allow the appropriate project participants
to verify compliance with the contract documents before fabrication
or installation.
