1. Two 500-g samples of different sands were found to have the following amounts retained on each sieve. Calculate the fineness modulus of each sand. a. 4.75 mm (No. 4)

= 15 g, 2.36 mm (No.8) = 60 g, 1.18 mm (No.16) = 100 g, 600 µm (No. 30) = 105 g, 300 µm (No. 50) = 130 g, 150 µm (No. 100) = 90 g