Who selects the size for acceptance testing of non-structural concrete?

• A. Contractor
• B. Inspector
• C. Owner
• D. Supplier

Answer: (A)

Choosing the size of acceptance test specimens for non-structural concrete is handled by the contractor as part of the quality control plan. The contractor is responsible for organizing field sampling and testing to prove the concrete meets project requirements, so they select a practical specimen size that aligns with the applicable test methods and the project’s specifications. The inspector’s role is to verify that testing is performed correctly and that the results are representative, not to decide the specimen size. The owner sets overall project requirements, but isn’t typically dictating the day-to-day sampling size for non-structural concrete. The supplier provides materials, not the testing plan.