dry sieve analysis is done and for soil particles of size above 75 micron and below 4.75mm, wet sieve analysis is also needed if the soil particles are coated by clay/silt. 2. Apparatus Required Fig. 1: Balance The balance to be used must be sensitive to the extent of 0.1% of total weight of sample taken. Fig. 2: Sieve I.S sieves (100 mm, 75 mm ...