Assuming that the workability of concrete is of no consequence, would sand be necessary in concrete mixtures? What is the significance of fineness modulus? Calculate the fineness modulus of sand with the following sieve analysis: Weight retained on No. 8 sieve, g = 30 Weight retained on No. 16 sieve, g = 70 Weight retained on No. 30 sieve, g = 125 Weight retained on No. 50 sieve, g = 135 Weight retained on No. 100 sieve, g = 120 Weight retained on No. 200 sieve, g = 20 Is this sand suitable for making concrete?