you need
  • - cutting ring;
  • - knife;
  • - Hammer;
  • - scales;
  • - drying cabinet;
  • - shovel;
  • - measuring vessel;
  • - drummer densitometer.
For most soils, except deliquescent and loose, use the easiest way of determining the density - the method of cutting rings.
in place of the sample will clear the land surface by several centimeters.Set the cutting ring of 50 cm3.Hand or tapping hammer push the ring into the ground.
With a knife, cut the ring with soil samples.Strip the ground level with the lower and upper edges of the cutting ring.
Make weighing the mass of moist soil.Then dry the sample in an oven and weighed determine the weight of the dry soil.
To determine the density of the soil, use the formula:

Pb = (P1 - P2) / V;
Pskh = Pb / (1 + 0.01 * W);where

Pb - natural soil density, g / cm3;
Pskh - dry soil density, g / cm3;
P1 - the mass of soil drying up together with the ring, in grams;
P2 - the mass of the ring, in grams;
V - the internal volume of the cutting ring cm3;
W - soil moisture,%.
For soils with high flowability or with stony inclusions using a method called shurfikov.It is applied in all cases when cutting ring remove the sample is not possible.
place in determining the density of the soil, dig a small shurfik (vertical test excavation).Selected soil collect in a container and weigh.
Over shurfikom install a tin cone with a measuring vessel.Now pour shurfik cone dry sand and determine the amount of shurfika.To calculate the density of the soil using the above formula.Lack of ways - low accuracy.
When using the method of penetration into the soil clogging perform special rod (stamp) using a mechanical hammer.At the same time count the number of strokes needed to deepen the shaft at a depth of 10 cm. The density of the soil define a special table that reflects the relationship between the number of strokes spent on immersion of the stamp and the characteristics of the soil.