,CBC Exam Questions 2026 – Complete 200+ Q&A Test Bank
with Verified Answers & Detailed Rationales | Certified
Business Consultant, Business Coach, Building Contractor &
Breastfeeding Counselor | Graded A+ | Instant Download
Question 1
According to standard building codes, what is the primary
purpose of a geotechnical soil report prior to foundation
design?
• A) To determine the aesthetic color and finish of exterior
masonry
• B) To evaluate soil bearing capacity, composition, and
moisture characteristics to ensure appropriate foundation
sizing and type
• C) To calculate the precise electrical load requirements of
the structure
• D) To establish property boundary lines and setback
restrictions
• Correct Answer: B
• Rationale: A geotechnical report provides critical data on
soil bearing pressure, settlement potential, and water
, table levels, allowing engineers to design safe, stable
foundations.
Question 2
What is the minimum curing time recommended for standard
structural concrete to achieve approximately 70% to 80% of its
specified compressive strength (𝑓′𝑐 ) under normal curing
conditions?
• A) 1 day
• B) 3 days
• C) 7 days
• D) 28 days
• Correct Answer: C
• Rationale: While standard concrete reaches its full design
compressive strength at 28 days, it typically achieves
roughly 70% to 80% of its strength within the first 7 days
under proper moisture and temperature conditions.
Question 3
In construction scheduling, what does the term "Critical Path"
represent?
• A) The sequence of activities with the shortest total
duration in the project
, • B) The longest sequence of dependent tasks that
determines the minimum overall project duration and has
zero total float
• C) The list of tasks that involve the highest financial
expenditure
• D) The sequence of safety inspections required by OSHA
• Correct Answer: B
• Rationale: The critical path dictates the project's timeline;
any delay on a critical path activity directly delays the final
completion date of the project.
Question 4
What is the primary function of rebar (reinforcing steel) within
structural concrete members?
• A) To increase compressive strength
• B) To provide tensile strength where concrete is inherently
weak
• C) To act as a thermal conductor to heat the slab
• D) To prevent the concrete from ever shrinking during
initial mixing
• Correct Answer: B
with Verified Answers & Detailed Rationales | Certified
Business Consultant, Business Coach, Building Contractor &
Breastfeeding Counselor | Graded A+ | Instant Download
Question 1
According to standard building codes, what is the primary
purpose of a geotechnical soil report prior to foundation
design?
• A) To determine the aesthetic color and finish of exterior
masonry
• B) To evaluate soil bearing capacity, composition, and
moisture characteristics to ensure appropriate foundation
sizing and type
• C) To calculate the precise electrical load requirements of
the structure
• D) To establish property boundary lines and setback
restrictions
• Correct Answer: B
• Rationale: A geotechnical report provides critical data on
soil bearing pressure, settlement potential, and water
, table levels, allowing engineers to design safe, stable
foundations.
Question 2
What is the minimum curing time recommended for standard
structural concrete to achieve approximately 70% to 80% of its
specified compressive strength (𝑓′𝑐 ) under normal curing
conditions?
• A) 1 day
• B) 3 days
• C) 7 days
• D) 28 days
• Correct Answer: C
• Rationale: While standard concrete reaches its full design
compressive strength at 28 days, it typically achieves
roughly 70% to 80% of its strength within the first 7 days
under proper moisture and temperature conditions.
Question 3
In construction scheduling, what does the term "Critical Path"
represent?
• A) The sequence of activities with the shortest total
duration in the project
, • B) The longest sequence of dependent tasks that
determines the minimum overall project duration and has
zero total float
• C) The list of tasks that involve the highest financial
expenditure
• D) The sequence of safety inspections required by OSHA
• Correct Answer: B
• Rationale: The critical path dictates the project's timeline;
any delay on a critical path activity directly delays the final
completion date of the project.
Question 4
What is the primary function of rebar (reinforcing steel) within
structural concrete members?
• A) To increase compressive strength
• B) To provide tensile strength where concrete is inherently
weak
• C) To act as a thermal conductor to heat the slab
• D) To prevent the concrete from ever shrinking during
initial mixing
• Correct Answer: B
