Under NC building codes, what is the minimum required inspection frequency for concrete placement on a commercial project?
Correct Answer
A) Before, during, and after each concrete pour
NC building codes require inspections before, during, and after each concrete pour to ensure compliance with structural requirements.
Why This Is the Correct Answer
North Carolina building codes require inspections at three stages of each concrete pour: before placement begins (to verify formwork, reinforcement, and substrate), during placement (to monitor consolidation and placement methods), and after placement (to verify finish and compliance). This three-stage requirement applies to each individual pour, not on a calendar basis.
Why the Other Options Are Wrong
Option B: Weekly regardless of concrete activity
Weekly inspections regardless of activity would leave many concrete pours uninspected if multiple pours occur in a week, or result in wasteful inspections when no concrete work is occurring. NC code ties inspections to the concrete activity itself, not to a fixed calendar.
Option C: Daily during concrete operations
Daily inspections during concrete operations would miss the critical pre-pour verification stage and would be insufficient when multiple pours occur in a single day. The code requires coverage for each individual pour event.
Option D: Only after completion of concrete work
Post-completion inspection only is the least protective approach and would allow defects in formwork, rebar placement, or pour technique to go undetected until the concrete has already hardened — at which point corrections are extremely costly or impossible.
Memory Technique
For NC concrete inspections, think BDA: Before, During, After — applied to EACH pour. Three stages, every time, not once a day or once a week.
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