Estudio geotécnico in Sant Feliu de Codines

In Sant Feliu de Codines, the predominant subsoil is mainly composed of sandstones, conglomerates and flysch, while a smaller proportion corresponds to gypsum, anhydrite and salts. These materials usually exhibit low to very low permeability, although they may host shallow aquifers at local points, a condition that is relevant for foundation studies. The mainly fragmentary nature of these formations generally ensures good bearing capacities; however, the occasional presence of gypsum and salts entails a potential risk of dissolution, a phenomenon that can affect the long-term stability of foundations.

The seismicity recorded in the municipality is very low, with only 5 events over 30 years and a maximum magnitude of 1.6, which allows the seismic action to be ruled out as a relevant conditioning factor in structural design. However, since gypsum-bearing materials may show karst developments, it is essential to verify the presence of karst before carrying out any foundation, as the existence of voids or underground cavities could compromise the stability of the structure. In short, the main geotechnical conditioning factor in Sant Feliu de Codines lies in the possibility of karst-related processes associated with gypsum and salts.