Idaho Construction Inspector
Examination Advanced 100-Question
Practice Exam 2026 | Questions &
Answers with Detailed Rationales |
Complete Exam Prep & Study Guide
1. During a footing inspection, the inspector observes that the excavation is
deeper than the approved plans indicate. What is the most appropriate first
action?
A. Approve the footing because deeper excavation increases capacity
B. Require immediate concrete placement
C. Verify the design elevation and require resolution of the discrepancy before
approving placement
D. Allow the contractor to backfill without documentation
Rationale: The inspector should verify discrepancies against the approved
construction documents and ensure that changes are properly evaluated and
approved before proceeding.
2. Which condition most directly indicates inadequate soil bearing
preparation beneath a shallow foundation?
,A. Properly compacted granular fill
B. Clean, undisturbed competent soil
C. Loose, saturated, or disturbed soil remaining at the bearing surface
D. Reinforcing steel supported on chairs
Rationale: Loose, disturbed, or saturated bearing material can significantly
reduce foundation performance and must be corrected before concrete
placement.
3. A concrete slab specification requires a particular compressive strength.
Which field test is most directly used to evaluate concrete consistency
rather than compressive strength?
A. Cylinder compression test
B. Core test
C. Slump test
D. Rebound hammer test
Rationale: Slump testing evaluates the consistency and workability of fresh
concrete; compressive strength is normally evaluated using cylinders or other
approved strength-testing procedures.
4. What is the primary purpose of concrete consolidation?
A. Increase water content
B. Reduce cement content
C. Remove entrapped air and ensure concrete surrounds reinforcement and
embedded items
D. Accelerate curing
Rationale: Proper consolidation eliminates voids and improves contact between
concrete, reinforcement, forms, and embedded components.
5. During a framing inspection, an inspector discovers that a load-bearing wall
has been moved from its approved location. What should the inspector
primarily determine?
,A. Whether the wall looks structurally adequate
B. Whether the contractor prefers the new location
C. Whether the relocation has been reviewed and approved as a design change
D. Whether drywall can conceal the change
Rationale: Moving a load-bearing element can alter load paths and structural
behavior, so the change must be evaluated and properly authorized.
6. Which observation is most concerning when inspecting wood framing?
A. Factory-stamped lumber
B. Properly installed blocking
C. Structural members cut or notched beyond permitted limits
D. Properly installed joist hangers
Rationale: Excessive cutting or notching can substantially weaken structural
members and may require engineering evaluation or correction.
7. What is the primary function of flashing at building-envelope transitions?
A. Increase structural capacity
B. Reduce concrete shrinkage
C. Direct water away from vulnerable joints and openings
D. Increase insulation R-value
Rationale: Flashing forms part of the drainage strategy by directing water away
from penetrations, intersections, and other vulnerable locations.
8. During roof inspection, the inspector notices that underlayment is installed
in the wrong sequence at a roof-to-wall intersection. Why is this
significant?
A. It only affects appearance
B. It increases framing strength
C. Improper sequencing can create a pathway for water intrusion
D. It eliminates the need for flashing
, Rationale: Roofing components must be integrated so that water flows over,
rather than behind, the weather-resistive layers.
9. Which condition is most likely to create a trip hazard in a newly constructed
stairway?
A. Uniform risers
B. Consistent tread depths
C. A significant variation between individual riser heights
D. Properly installed handrails
Rationale: Stair safety depends heavily on uniformity. Unexpected changes in
riser height can cause users to misstep and fall.
10.What is the primary purpose of a stair handrail?
A. Prevent water infiltration
B. Support roof loads
C. Provide a graspable support for users navigating the stairway
D. Replace required guards
Rationale: Handrails provide support and stability while traveling on stairs and
are distinct from guards intended to prevent falls from elevated surfaces.
11.During an excavation inspection, the inspector observes cracking near the
edge of a trench. What should the inspector recognize?
A. Cracking always indicates acceptable soil
B. Cracking has no relationship to stability
C. Cracking may indicate soil movement and increased cave-in risk
D. Cracking proves the trench is overexcavated
Rationale: Tension cracks can be an indication of unstable soil conditions and
require prompt evaluation and protective measures.
12.Which method is generally used to determine whether compacted fill has
achieved the specified density?
Examination Advanced 100-Question
Practice Exam 2026 | Questions &
Answers with Detailed Rationales |
Complete Exam Prep & Study Guide
1. During a footing inspection, the inspector observes that the excavation is
deeper than the approved plans indicate. What is the most appropriate first
action?
A. Approve the footing because deeper excavation increases capacity
B. Require immediate concrete placement
C. Verify the design elevation and require resolution of the discrepancy before
approving placement
D. Allow the contractor to backfill without documentation
Rationale: The inspector should verify discrepancies against the approved
construction documents and ensure that changes are properly evaluated and
approved before proceeding.
2. Which condition most directly indicates inadequate soil bearing
preparation beneath a shallow foundation?
,A. Properly compacted granular fill
B. Clean, undisturbed competent soil
C. Loose, saturated, or disturbed soil remaining at the bearing surface
D. Reinforcing steel supported on chairs
Rationale: Loose, disturbed, or saturated bearing material can significantly
reduce foundation performance and must be corrected before concrete
placement.
3. A concrete slab specification requires a particular compressive strength.
Which field test is most directly used to evaluate concrete consistency
rather than compressive strength?
A. Cylinder compression test
B. Core test
C. Slump test
D. Rebound hammer test
Rationale: Slump testing evaluates the consistency and workability of fresh
concrete; compressive strength is normally evaluated using cylinders or other
approved strength-testing procedures.
4. What is the primary purpose of concrete consolidation?
A. Increase water content
B. Reduce cement content
C. Remove entrapped air and ensure concrete surrounds reinforcement and
embedded items
D. Accelerate curing
Rationale: Proper consolidation eliminates voids and improves contact between
concrete, reinforcement, forms, and embedded components.
5. During a framing inspection, an inspector discovers that a load-bearing wall
has been moved from its approved location. What should the inspector
primarily determine?
,A. Whether the wall looks structurally adequate
B. Whether the contractor prefers the new location
C. Whether the relocation has been reviewed and approved as a design change
D. Whether drywall can conceal the change
Rationale: Moving a load-bearing element can alter load paths and structural
behavior, so the change must be evaluated and properly authorized.
6. Which observation is most concerning when inspecting wood framing?
A. Factory-stamped lumber
B. Properly installed blocking
C. Structural members cut or notched beyond permitted limits
D. Properly installed joist hangers
Rationale: Excessive cutting or notching can substantially weaken structural
members and may require engineering evaluation or correction.
7. What is the primary function of flashing at building-envelope transitions?
A. Increase structural capacity
B. Reduce concrete shrinkage
C. Direct water away from vulnerable joints and openings
D. Increase insulation R-value
Rationale: Flashing forms part of the drainage strategy by directing water away
from penetrations, intersections, and other vulnerable locations.
8. During roof inspection, the inspector notices that underlayment is installed
in the wrong sequence at a roof-to-wall intersection. Why is this
significant?
A. It only affects appearance
B. It increases framing strength
C. Improper sequencing can create a pathway for water intrusion
D. It eliminates the need for flashing
, Rationale: Roofing components must be integrated so that water flows over,
rather than behind, the weather-resistive layers.
9. Which condition is most likely to create a trip hazard in a newly constructed
stairway?
A. Uniform risers
B. Consistent tread depths
C. A significant variation between individual riser heights
D. Properly installed handrails
Rationale: Stair safety depends heavily on uniformity. Unexpected changes in
riser height can cause users to misstep and fall.
10.What is the primary purpose of a stair handrail?
A. Prevent water infiltration
B. Support roof loads
C. Provide a graspable support for users navigating the stairway
D. Replace required guards
Rationale: Handrails provide support and stability while traveling on stairs and
are distinct from guards intended to prevent falls from elevated surfaces.
11.During an excavation inspection, the inspector observes cracking near the
edge of a trench. What should the inspector recognize?
A. Cracking always indicates acceptable soil
B. Cracking has no relationship to stability
C. Cracking may indicate soil movement and increased cave-in risk
D. Cracking proves the trench is overexcavated
Rationale: Tension cracks can be an indication of unstable soil conditions and
require prompt evaluation and protective measures.
12.Which method is generally used to determine whether compacted fill has
achieved the specified density?
