Structural Inspection Methods Flashcards
7 cards from real CCI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Structural Inspection Methods flashcards as text
When inspecting a reinforced concrete beam, what is the primary concern regarding concrete cover over rebar?
Answer: Protection of steel from corrosion and fire exposure
Adequate concrete cover protects embedded steel reinforcement from corrosion due to moisture ingress and provides fire resistance.
Which test is used to evaluate the in-place compressive strength of hardened concrete non-destructively?
Answer: Rebound hammer (Schmidt hammer) test
The rebound hammer test measures surface hardness of hardened concrete, which correlates to estimated compressive strength.
During structural steel erection inspection, what does a 'plumb' check verify?
Answer: Vertical alignment of columns
A plumb check verifies that steel columns are perfectly vertical within allowable tolerances specified in the project documents.
A construction inspector notices a crack pattern in a masonry wall that is diagonal and runs from a window corner downward. This most likely indicates:
Answer: Differential settlement of the foundation
Diagonal cracks emanating from openings such as windows are a classic indicator of differential foundation settlement.
What is the purpose of a hydrostatic pressure test on a structural waterproofing membrane?
Answer: To verify the membrane resists water penetration under pressure
A hydrostatic pressure test confirms that the waterproofing membrane can resist water under sustained pressure without leaking.
When inspecting anchor bolts for a steel column base plate, the inspector should verify:
Answer: Bolt diameter, embedment depth, projection, and spacing per approved drawings
Anchor bolt inspection must confirm correct diameter, embedment depth, projection height, and layout spacing against the approved structural drawings.
In post-tensioned concrete construction, what is a 'tendon bleed-off' and why is it significant?
Answer: Corrosion product seeping from anchorage zones indicating moisture intrusion
Tendon bleed-off refers to rust-stained water weeping from anchorage zones, indicating that moisture has reached the prestressing steel and corrosion is occurring.