Regarding mold calibration, what is the limit for the difference between two methods?

The limit for the difference between two methods in mold calibration is established to ensure accuracy and consistency in measurements. The correct answer indicates that a difference of 0.5% of the nominal volume is permissible. This standard reflects the tolerance required for reliable testing processes, particularly when dealing with materials like soils.

This margin allows for minor fluctuations that could arise from different techniques or instruments used in measuring the same volume, while still ensuring that the results are sufficiently precise for construction materials testing. By adhering to this standard, it guarantees that all measurements will align closely enough to confirm the integrity of the testing procedure, which is essential for effective quality control in construction projects.

The other options suggest different percentages, which do not align with the established calibration standards recognized within the industry. These discrepancies can lead to unacceptable variability, potentially impacting the overall assessment and quality of the materials being tested.