Aggregate correction factors are used for sieves larger than the 75 µm ( # 200 ) sieves only in the table.

• A. True
• B. False
• C. They are never used
• D. They are used for all sieves regardless of size

Answer: (B)

In sieve analysis, aggregate correction factors are used to adjust the measured weight retained on each sieve to account for small differences between the actual sieve openings and their nominal sizes. These factors are published for a range of sieve sizes in the standard, and you apply the corresponding factor to the weight retained on each listed sieve. They are not limited to sieves larger than the 75 µm (#200) size; the correction table covers multiple sizes, and some sizes may have zero or no correction applied. Therefore, the statement that correction factors are used only for sieves larger than the 75 µm sieve is not correct.