When drilling or piercing, it is necessary to take soil samples as they are alternating and at least every meter. The structure of the samples should remain Kenarueni to determine the physical properties of soils in the laboratory. Of these, they are determined in the natural state of the soil: its volumetric weight, porosity, humidity, plasticity, granulometric composition and structure, internal friction coefficient and percentage of organic impurities, if the presence of the latter is assumed in appearance.
