Question

The particle size distribution curves are extremely useful for the classification of

• A. fine grained soils
• B. coarse grained soils
• C. both coarse grained and fine grained
• D. slits and clays

Answer 1

The correct option is B coarse grained soils

Properties of coarse grained soil (cohesionless) to a greater extent depend on grain size distribution. Properties of fine grained soil depends little on grain size distribution. They rather depend on structure, shape, geological origin etc. Particle size distribution curves helps in determining gradation and uniformity of coarse grained soils. This knowledge helps in construction of earth dams, embankment filters etc.