Foundation design strongly relies on the knowledge of the designer about the implementation site. Both lab and in-situ tests are the best alternatives to obtain reliable information about the soil mass, however, the quantity and quality of such tests may still not be adequate to fully understand the underground terrain. Quantity may be an issue because the general idea to minimize costs by decreasing tests is still present in the engineering market. Quality, on the other hand, is a major issue as poorly-executed or poorly-located tests significantly affect the designed solution. Instead of executing more tests, engineers should understand how to take advantage of common procedures to obtain parameters of interest. In the present paper, it is studied how the execution energy of continuous flight auger piles can be related to the Unconfined Compressive Strength (UCS) of the surrounding soil mass. The excavation of this type of pile can be fully monitored by collecting data from sensors in the drilling machine. Thus, based on models presented in the literature, the collected data was analyzed and it was possible to estimate the UCS of the excavated soil layers. In order to verify the consistency of the values estimated, soil surveys were carried out to identify the soil strata in the site. The indirect measurements considerably agree with typical UCS values of the materials considered. The estimated parameters can be used to update the projects almost instantly. Therefore, allying technology, theory and engineering practice is a good and cheap source of information, which ultimately enhances the quality of foundation designs.