Textural classification of soil
Soil occurring in nature are composed of different percentage of sand, silt, and clay. Classification of composite soil exclusively based on the particle size distribution is known as textural classification of soil.
In this system of classification, a soil is given some textural names on the basis of the percentages o sand, silt and clay making up the soil.
To use this classification, the percentage of sand, silt, and clay in the soil sample are determined by sieve analysis. They are then plotted in a triangular chart and a point is located. The designation of the area in which the point falls indicates the soil type.
This system of classification is more suitable for describing coarse-grained soils.
Particle Size Classification System Of Soil