Estudio geotécnico in Cercs

In the municipality of Cercs, the predominant materials correspond to sandstones, conglomerates and flysch, providing soils with coarse granulometry and medium to high strength, which supports good bearing capacities for shallow foundations across most of the area. Limestone formations, dolomites and marbles also occur frequently, complementing the competent substrate, although the occasional presence of gypsum, anhydrite and salts implies a risk of dissolution and subsidence at localised points. These factors require appropriate geotechnical characterisation prior to the execution of any work and may influence the choice of foundation type.

Seismicity in Cercs is very low, with only around 2 events over 30 years and a maximum magnitude of 2.6, so it does not constitute a relevant factor in structural design. However, the development of karst processes linked to the limestones must be expressly verified before foundation works, as this may entail local instabilities and collapses. The fact that the subsoil is not clayey rules out risks due to expansivity. As the main constraint, the need to assess the risk of karstification and the presence of soluble soils in the geotechnical study design stage stands out.