CPII Construction Inspection Techniques 5

Question 1

During a structural steel erection inspection, the inspector observes a high-strength bolt that spins freely after installation. What does this indicate?

Accepted Answer

The bolt threads are stripped or the nut has failed, and the connection is non-functional

Answer

A freely spinning bolt after installation indicates the threads are stripped or the nut has failed, meaning the bolt provides no clamping force and the connection is structurally deficient.

Question 2

What is the primary distinction between a hold point and a witness point in a construction quality inspection program?

Accepted Answer

At a hold point work must stop until the inspector approves; at a witness point the inspector should attend but work may proceed if the inspector is not available

Answer

A hold point mandates that work stop and not proceed without inspector approval, while a witness point documents intent for the inspector to observe but does not prohibit continuation if the inspector is unavailable.

Question 3

An inspector is checking anchor bolt placement for a steel column base plate. Which tolerance is typically specified for anchor bolt center-to-center spacing per AISC standards?

Accepted Answer

±1/8 inch

Answer

AISC specifies that anchor bolt center-to-center spacing for individual columns should be within ±1/8 inch to ensure proper fit of the base plate and column.

Question 4

When inspecting a flexible pavement base course, the inspector observes pumping of subgrade material into the base aggregate during compaction. What does this indicate?

Accepted Answer

The subgrade is saturated and weak, requiring stabilization before base placement can continue

Answer

Pumping indicates a saturated, weak subgrade that cannot support compaction loads, requiring subgrade stabilization, over-excavation, or drainage improvement before proceeding.

Question 5

What is the inspector's responsibility when a contractor proposes a material substitution during construction?

Accepted Answer

Document the request and forward it to the engineer of record for formal review and approval before allowing the substitution

Answer

Material substitutions must be formally reviewed and approved by the engineer of record, as the inspector does not have authority to approve changes to specified materials.

(CPII) Certified Public Infrastructure Inspector Practice Test

(CPII) Certified Public Infrastructure Inspector Practice Test

CPII Construction Inspection Techniques 5