ACI Concrete Field Testing — Free Demo (10 Questions)

A reviewer sees a superficially attractive answer that violates the governing limit state in a ACI Concrete Field Testing Grade I hard mock pre-calculation audit. Case focus: load reversal changes the sign convention after the intermediate result is written. The issue is that the remixing before tests evidence is strong in one subsystem but weak in the governing subsystem. For the ASTM C172 sampling item, which verification step must be completed before any numerical option can be trusted?