If nonconforming concrete is identified, whom should you notify?

• A. The contractor and engineer.
• B. The supplier only.
• C. The public.
• D. The project safety officer only.

Answer: (A)

When nonconforming concrete is identified, you notify the contractor and the engineer. This pairing ensures the right people review and decide how to remedy the issue: the engineer evaluates whether to reject, repair, or accept with adjustments and provides the official authorization, while the contractor handles implementing the required corrective actions and coordinating replacements or repairs. Prompt notification also keeps documentation accurate and the project on track.

Informing only the supplier, the public, or the project safety officer does not give the necessary authority to make disposition decisions or drive the corrective work, so those channels aren’t appropriate as the primary notification.