Sieving on sieves

Screening on a grid

Granular class d/D (mm)

Mg (g)

Grids spacing (mm)

Passing Mei (g)

31.5/40

20

25/31.5

16

20/25

12.5

16/20

65

10

13

12.5/16

525

8

50

10/12.5

3207

6.3

507

8/10

804

5

194

6.3/8

333

4

74

5/6.3

38

3.15

6

4/5

12

2.5

1

M = ΣMgi

4984

M = ΣMei

845

M₀

4996

A (%)

16.95