CPII Construction Inspection Techniques 2

Question 1

When inspecting a concrete pour, at what point should an inspector collect a slump test sample?

Accepted Answer

At the point of discharge from the truck, after discarding the first portion

Answer

Slump test samples must be taken at the point of discharge after the first portion is discarded to ensure a representative sample of the concrete being placed.

Question 2

Which type of non-destructive testing method uses high-frequency sound waves to detect internal flaws in structural steel?

Accepted Answer

Ultrasonic testing

Answer

Ultrasonic testing (UT) uses high-frequency sound waves that reflect off internal discontinuities, making it effective for detecting subsurface flaws in structural steel.

Question 3

An inspector observes that rebar spacing in a concrete wall form exceeds plan specifications by 2 inches. What is the correct course of action?

Accepted Answer

Document the deviation and issue a nonconformance report requiring correction before concrete placement

Answer

Any deviation from approved plans must be documented via a nonconformance report and corrected before proceeding with concrete placement to ensure structural integrity.

Question 4

What is the primary purpose of a proctor compaction test in earthwork inspection?

Accepted Answer

To establish the relationship between moisture content and maximum dry density for a soil

Answer

The Proctor compaction test establishes the optimum moisture content and maximum dry density, which serve as the reference standard for field compaction testing.

Question 5

During a pipeline trench inspection, the inspector finds that the bedding material placed below the pipe is clay rather than the specified granular material. What risk does this create?

Accepted Answer

Differential settlement and potential pipe joint separation or failure

Answer

Clay bedding retains moisture and is susceptible to differential settlement, which can cause pipe joint separation, cracking, or structural failure over time.

(CPII) Certified Public Infrastructure Inspector Practice Test

(CPII) Certified Public Infrastructure Inspector Practice Test

CPII Construction Inspection Techniques 2