A quality control inspection reveals that concrete strength tests show 2,800 psi when the specification requires 3,000 psi. What should be the first step in the quality control procedure?
Correct Answer
B) Document the non-conformance and notify the design professional
The first step when identifying non-conforming work is to document the issue and notify the appropriate parties, including the design professional, to determine the appropriate corrective action.
Why This Is the Correct Answer
Option C is correct because proper quality control procedures require documentation and communication as the first step when non-conforming work is identified. The design professional must be notified immediately as they are responsible for determining whether the reduced strength is acceptable or what corrective measures are required. Documentation creates a paper trail for liability protection and ensures all stakeholders are aware of the issue. This follows standard construction industry protocols and legal requirements for handling specification deviations.
Why the Other Options Are Wrong
Option A: Accept the concrete since it's close to the specified strength
Option A is wrong because accepting concrete that doesn't meet specifications without proper authorization is a violation of contract requirements and could compromise structural integrity. Even though 2,800 psi is close to 3,000 psi, the contractor cannot unilaterally decide to accept non-conforming work.
Option C: Immediately remove and replace all affected concrete
Option D is wrong because while additional testing might eventually be needed, it should not be the first step. The immediate priority is to document and communicate the non-conformance. Additional testing may be part of the corrective action plan determined after consulting with the design professional.
Memory Technique
Think 'CYA' - Cover Your Assets. Always document and notify before taking action to protect yourself legally and ensure proper engineering review of structural issues.
Reference Hint
ACI 318 Building Code Requirements for Structural Concrete, Chapter 26 - Quality Control and Assurance, and Florida Building Code Chapter 19 - Concrete
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