Scheme of Soil Classification 
Class 
1 
Fine 
gravel 
2-1 
mm. 
2 
Coarse 
sand 
1-0.5 
mm. 
3 
Medium 
sand 
0.5-0.25 
mm. 
4 
Fine sand 
0.25-0.1 
mm. 
5 
Very’ fine 
sand 
0.1-0.05 
mm. 
6 
Silt 
0.05-0.005 
mm. 
7 
Clay 
0.005-0 
mm. 
Coarse 
sand 
More than 25% of 1 + 2 
More than 50% of 1 + 2 + 3 
0-15 0-10 
Less than 20% of 
6 + 7 
Medium 
sand 
Less than 25% of 1 + 2 
More than 20% of 1 + 2 + 3 
0-15 0-10 
Less than 20% of 
6+7 
Fine sand 
Less than 20% of 1 + 2 + 3 
0-15 0-10 
Less than 20% of 
6 + 7 
Sandy loam 
More than 20% of 1 + 2 + 3 
10-35 5-15 
M ore than 20% 
and less than 50% 
of 6 + 7 
Fine sandy 
loam 
Less than 20% of 1 + 2 + 3 
10-35 5-15 
More than 20% 
and less than 50% 
of 6 + 7 
Loam 
15-25 
Less than 
55% of 6 
More than 50% of 
6 + 7 
Silt loam 
More T .. 
than 55% Less than 
of 6 25% of 7 
Clay loam 
25-55 25-35 
More than 60% of 
6+ 7 
Sandy clay 
More 
Less than than 20% 
25% of 6 0 f 7 
Less than 60% of 
6+ 7 
Silt clay 
More ~ 
than 55% 25-35% 
of 6 o£ 7 
Clay 
More 
than 35% 
of 7 
More than 60% of 
6 + 7 
19 
