Estudio geotécnico in Porreres

In the municipality of Porreres, there is a predominance of expansive white/soft clays, followed by calcareous formations such as limestones, dolomites and marbles. Soils with an occasional presence of fine sands, silts and, in smaller proportions, gypsum and salts, suggest considerable lithological variability. The presence of local, discontinuous aquifers implies that bearing capacity may vary significantly depending on the installation point, requiring specific studies to define the appropriate foundation. The non-clayey substrate rules out the risk of expansivity, which reduces the precautions required for differential movements related to hygrometric changes.

The seismicity recorded in Porreres is very low, with only one event in the last 30 years and a maximum magnitude of 2.2, which minimises the relevance of seismic actions in structural design. However, the possible presence of karst associated with the calcareous formations requires careful verification before proceeding with the foundation, as there could be cavities or subsidences not detected at the surface. The key aspect in local geotechnics is therefore the detailed assessment of the behaviour of the karstified ground and the variability of the granular and cohesive materials present in the profile.