Estudio geotécnico in La Seca

In La Seca, the substrate is dominated by limestones, dolomites and marbles, which implies a rocky ground with good bearing capacity for foundations. The occasional presence of compact gravels and sands can additionally provide good levels of stability, whereas the incidence of slates, gypsum and sandstones is low. It is essential to consider the possibility of dissolution in areas where gypsum, anhydrite or salts appear, although these lithologies are infrequent. The generally low permeability limits infiltration, although small aquifers may occur in specific zones.

With regard to geotechnical risks, the recorded seismic activity is very low, with only one event in thirty years and a maximum magnitude of 3.3, so structural stability is usually not compromised by seismicity. The non-clayey substrate removes concern about expansivity-related problems. However, as this is a potentially karstic area, it is essential to verify the existence of cavities or dissolution processes before executing the foundation, since this is the main factor to be analysed in any geotechnical study in La Seca.