Estudio geotécnico in Corbera de Llobregat

In Corbera de Llobregat, soils with Gypsum, Anhydrite and Salts predominate at 37.5%, followed by detrital materials such as sandstones and conglomerates, and by carbonate or metamorphic formations in smaller proportions. Gypsum and salts can induce dissolution problems that affect bearing capacity, particularly if there are variations in moisture, whereas sandstones and conglomerates usually allow for shallow foundations if the stiffness and strength are adequate. Although they are occasional, slates and schists require verifying their degree of weathering before selecting the foundation type. The generally low permeability means that, in the geotechnical study, the water table level and the contribution from deep aquifers must be assessed in detail.

The seismicity of the area is very low, with fewer than 10 significant events in the last 30 years and a maximum magnitude value that is clearly below the threshold, which limits the influence of this factor on structural design. The non-clayey substratum rules out expansion-related problems, but it is essential to verify the presence of karst formations, especially associated with limestones and gypsum, as they may host cavities or unstable zones that condition the viable foundation type. The main factor constraining the situation in Corbera de Llobregat will be the possible presence of karst processes and dissolution phenomena linked to gypsum and salts.