Index Property Test (Determining of soil classification)
Moisture content - determination of the moisture content of a soil as a percentage of its oven-dried weight.
Unit weight - determining the total/moist and dry densities - unit weights - of soil specimens.
Specific gravity - determination of the specific gravity of soil solids passing the 4.75-mm sieve (No. 4) by means of a water pycnometer.
Attenberg limits - determination of the liquid limit, plastic limit, and the plasticity index of soils.
Particle size distribution - quantitative determination of the distribution of particle sizes in soils, distribution of particle sizes larger than 75 µm - retained on the No. 200 sieve - is determined by sieving, while the distribution of particle sizes smaller than 75 µm is determined by a sedimentation process, using a hydrometer.
