If QC and VT do not compare within 4.5 pcf for Maximum Density, what should be the next step?

If QC and VT do not compare within 4.5 pcf for Maximum Density, what should be the next step?

• A. SMO tests the RT sample
• B. Re-test the QC sample
• C. Re-test the VT sample
• D. Ignore the difference

Answer: (A)

When two density measurements are not within the allowed difference, you need an independent check on a third sample to resolve the disagreement. Having SMO test the RT sample provides a third, objective measurement that serves as a tie-breaker to confirm which result reflects the actual maximum density. This step protects against accepting an incorrect density value and keeps the project in spec. Re-testing only the QC or only the VT sample won’t settle the discrepancy, and ignoring it isn’t acceptable. The RT sample tested by SMO gives a definitive, auditable conclusion.

When two density measurements are not within the allowed difference, you need an independent check on a third sample to resolve the disagreement. Having SMO test the RT sample provides a third, objective measurement that serves as a tie-breaker to confirm which result reflects the actual maximum density. This step protects against accepting an incorrect density value and keeps the project in spec. Re-testing only the QC or only the VT sample won’t settle the discrepancy, and ignoring it isn’t acceptable. The RT sample tested by SMO gives a definitive, auditable conclusion.