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D. Evaluation of Concrete Strengths <br /> 1. The strength level of concrete will be considered satisfactory if the averages of all sets of test results equal or <br /> exceed the required strength and no individual strength test result falls below the required strength by more ' <br /> than 500 p.s.i. <br /> 2. Concrete in the area represented by the core tests will be considered structurally adequate if the average of the <br /> three cores is equal to at least 85 percent required strength, and if no single core is less than 75 percent of <br /> required strength. <br /> 3. If strength acceptance criteria are not met by the core tests, and if structural adequacy remains in doubt, the <br /> Architect may order load tests as outlined in ACI 318 for the questionable portion of the structure, or take <br /> other action appropriate to the circumstances. <br /> END OF SECTION 03300 <br /> 03300-12 No.99132-CP2 <br />