This document provides information on sieve analysis testing of soils based on IS 2720 Part 4. It discusses the objectives of classification of soils, coefficient of curvature, uniformity coefficient, and fineness modulus. It outlines applications in gradation of soils, mix design, and filter design. The theory section defines coefficients and formulas used. It describes the apparatus and sieves used and the procedure, precautions, observations, calculations, and results of the test. The goal is to characterize properties of a soil sample through separating particles by size.