Kansas Concrete Construction Special
Inspector Qualification Advanced 100-
Question Practice Exam 2026 |
Questions & Answers with Detailed
Rationales | Complete Exam Prep &
Study Guide
1.
During a preplacement inspection, the approved structural drawings require No. 5
reinforcing bars at 12 in. on center, but the installed spacing averages 15 in. What
should the special inspector do first?
A. Permit placement because the average spacing is close to the specified value
B. Direct the ironworkers to immediately replace the reinforcement
C. Document the discrepancy and notify the responsible parties in accordance
with the inspection plan
D. Modify the reinforcement spacing in the field
,Answer: C. Document the discrepancy and notify the responsible parties in
accordance with the inspection plan
Rationale: The special inspector observes, documents, and reports compliance or
noncompliance. The inspector generally does not redesign the structure or
unilaterally authorize deviations from approved construction documents.
2.
A concrete mix has a specified compressive strength of 5,000 psi. During
placement, the contractor requests additional water at the point of discharge to
increase slump. What is the most appropriate inspection response?
A. Allow unlimited water provided the concrete remains workable
B. Reject every load that requires water adjustment
C. Verify that any water addition is permitted by the approved mixture and
applicable requirements and is properly documented
D. Add water until the measured slump reaches 8 in.
Answer: C. Verify that any water addition is permitted by the approved mixture
and applicable requirements and is properly documented
Rationale: Water may not be added indiscriminately. Adjustments must remain
within the approved mixture requirements and applicable water-cementitious-
material limitations and must be recorded when required.
3.
Which condition most directly increases the risk of plastic shrinkage cracking?
A. High relative humidity with low evaporation
B. Low concrete temperature and high humidity
C. Rapid surface moisture loss caused by wind, low humidity, and elevated
concrete temperature
D. Continuous ponding immediately after finishing
Answer: C. Rapid surface moisture loss caused by wind, low humidity, and
elevated concrete temperature
,Rationale: Plastic shrinkage cracking develops when evaporation from the
surface exceeds the rate at which bleed water can replace the lost moisture.
4.
A slab-on-ground is specified with a maximum water-cementitious-material ratio
of 0.45. The batch ticket shows 500 lb of cementitious material and 220 lb of total
mixing water. Ignoring other sources of water, what is the water-cementitious-
material ratio?
A. 0.40
B. 0.44
C. 0.45
D. 0.50
Answer: B. 0.44
Rationale: The ratio is 220 ÷ 500 = 0.44, which is below the specified maximum
of 0.45.
5.
What is the primary purpose of concrete consolidation?
A. Increase the water content
B. Remove entrapped air and ensure concrete surrounds reinforcement and
embedded items
C. Increase aggregate size
D. Accelerate cement hydration
Answer: B. Remove entrapped air and ensure concrete surrounds reinforcement
and embedded items
Rationale: Proper consolidation eliminates harmful voids and improves contact
between concrete, reinforcement, forms, and embedded components.
6.
, An internal vibrator is inserted into freshly placed concrete but is allowed to
remain stationary in one location for an excessive period. What defect may
result?
A. Improved air entrainment
B. Increased reinforcement yield strength
C. Segregation and localized loss of uniformity
D. Increased cement content
Answer: C. Segregation and localized loss of uniformity
Rationale: Excessive vibration can cause coarse aggregate settlement and
mortar migration, producing segregation rather than beneficial consolidation.
7.
Which document normally establishes the project-specific requirements that the
inspector must verify during concrete construction?
A. Inspector's personal checklist
B. Approved construction documents and project specifications
C. Concrete supplier's marketing literature
D. Contractor's verbal instructions
Answer: B. Approved construction documents and project specifications
Rationale: Inspection is based on the approved drawings, specifications,
applicable code requirements, and the statement of special inspections or
inspection plan.
8.
What is the most important reason an inspector should review structural
drawings before concrete placement?
A. To determine the contractor's profit margin
B. To identify reinforcement, dimensions, elevations, openings, embeds, joints,
and other inspection requirements
Inspector Qualification Advanced 100-
Question Practice Exam 2026 |
Questions & Answers with Detailed
Rationales | Complete Exam Prep &
Study Guide
1.
During a preplacement inspection, the approved structural drawings require No. 5
reinforcing bars at 12 in. on center, but the installed spacing averages 15 in. What
should the special inspector do first?
A. Permit placement because the average spacing is close to the specified value
B. Direct the ironworkers to immediately replace the reinforcement
C. Document the discrepancy and notify the responsible parties in accordance
with the inspection plan
D. Modify the reinforcement spacing in the field
,Answer: C. Document the discrepancy and notify the responsible parties in
accordance with the inspection plan
Rationale: The special inspector observes, documents, and reports compliance or
noncompliance. The inspector generally does not redesign the structure or
unilaterally authorize deviations from approved construction documents.
2.
A concrete mix has a specified compressive strength of 5,000 psi. During
placement, the contractor requests additional water at the point of discharge to
increase slump. What is the most appropriate inspection response?
A. Allow unlimited water provided the concrete remains workable
B. Reject every load that requires water adjustment
C. Verify that any water addition is permitted by the approved mixture and
applicable requirements and is properly documented
D. Add water until the measured slump reaches 8 in.
Answer: C. Verify that any water addition is permitted by the approved mixture
and applicable requirements and is properly documented
Rationale: Water may not be added indiscriminately. Adjustments must remain
within the approved mixture requirements and applicable water-cementitious-
material limitations and must be recorded when required.
3.
Which condition most directly increases the risk of plastic shrinkage cracking?
A. High relative humidity with low evaporation
B. Low concrete temperature and high humidity
C. Rapid surface moisture loss caused by wind, low humidity, and elevated
concrete temperature
D. Continuous ponding immediately after finishing
Answer: C. Rapid surface moisture loss caused by wind, low humidity, and
elevated concrete temperature
,Rationale: Plastic shrinkage cracking develops when evaporation from the
surface exceeds the rate at which bleed water can replace the lost moisture.
4.
A slab-on-ground is specified with a maximum water-cementitious-material ratio
of 0.45. The batch ticket shows 500 lb of cementitious material and 220 lb of total
mixing water. Ignoring other sources of water, what is the water-cementitious-
material ratio?
A. 0.40
B. 0.44
C. 0.45
D. 0.50
Answer: B. 0.44
Rationale: The ratio is 220 ÷ 500 = 0.44, which is below the specified maximum
of 0.45.
5.
What is the primary purpose of concrete consolidation?
A. Increase the water content
B. Remove entrapped air and ensure concrete surrounds reinforcement and
embedded items
C. Increase aggregate size
D. Accelerate cement hydration
Answer: B. Remove entrapped air and ensure concrete surrounds reinforcement
and embedded items
Rationale: Proper consolidation eliminates harmful voids and improves contact
between concrete, reinforcement, forms, and embedded components.
6.
, An internal vibrator is inserted into freshly placed concrete but is allowed to
remain stationary in one location for an excessive period. What defect may
result?
A. Improved air entrainment
B. Increased reinforcement yield strength
C. Segregation and localized loss of uniformity
D. Increased cement content
Answer: C. Segregation and localized loss of uniformity
Rationale: Excessive vibration can cause coarse aggregate settlement and
mortar migration, producing segregation rather than beneficial consolidation.
7.
Which document normally establishes the project-specific requirements that the
inspector must verify during concrete construction?
A. Inspector's personal checklist
B. Approved construction documents and project specifications
C. Concrete supplier's marketing literature
D. Contractor's verbal instructions
Answer: B. Approved construction documents and project specifications
Rationale: Inspection is based on the approved drawings, specifications,
applicable code requirements, and the statement of special inspections or
inspection plan.
8.
What is the most important reason an inspector should review structural
drawings before concrete placement?
A. To determine the contractor's profit margin
B. To identify reinforcement, dimensions, elevations, openings, embeds, joints,
and other inspection requirements
