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Q: If fineness modulus of sand is 2.5 it is graded as ..........
  • A. very fine sand
  • B. fine sand
  • C. medium sand
  • D. coarse sand
Correct Answer: Option B - Fineness modulus–Fineness modulus is an empirical factor obtained by adding the cumulative percentage of aggregate retained on each of the standard sieves and dividing this sum by 100. Type of sand Fineness modulus (2-3.5) Fine sand 2.2-2.6 Medium sand 2.6-2.90 Coarse sand 2.9-3.2
B. Fineness modulus–Fineness modulus is an empirical factor obtained by adding the cumulative percentage of aggregate retained on each of the standard sieves and dividing this sum by 100. Type of sand Fineness modulus (2-3.5) Fine sand 2.2-2.6 Medium sand 2.6-2.90 Coarse sand 2.9-3.2

Explanations:

Fineness modulus–Fineness modulus is an empirical factor obtained by adding the cumulative percentage of aggregate retained on each of the standard sieves and dividing this sum by 100. Type of sand Fineness modulus (2-3.5) Fine sand 2.2-2.6 Medium sand 2.6-2.90 Coarse sand 2.9-3.2