The experimental observations indicate that the mechanic behavior of the soils does not only depend on its structure and state of stresses, but also on its void ratios. This last one corresponds to the volume of voids of a soil within its volume of solids. The void ratios are between the range given by the maximum void ratio, which is given at the loosest state of the material and the minimum void ratio in the densest state of the material. The investigation was developed in three phases, in the first one twenty artificial granulometric soils were built with granular characteristics, split into four groups of five curves with an average diameter of the material which are approximately equal. Then, in the second phase of this investigation, the maximum and minimum void ratios were determined for every granulometric curve created. Finally, statistic correlations were proposed between the granulometric characteristics and the maximum and minimum void ratios for the obtained data in the lab and the data reported in the literature