Answer / narendra

coarse sand has a fineness modulus of 2.9-3.2 while medium sand range is 2.6-2.9 and fine sand is 2.2-2.6

Answer / shahnawaz khan

course- 4.75mm to 2.0mm
medium- 2.0mm to 425 micron sieve
fine- 425 micron to 75 micron sieve

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