Estudio geotécnico in Arcicóllar

In Arcicóllar, the ground is dominated mainly by sandstones, conglomerates and flysch, materials that provide good bearing capacity and allow the use of direct foundation systems in most situations. Limestone, dolomite and marble are also common, which increases the stiffness of the substrate but may require a specific analysis of the groundwater level or discontinuities. Both shales and schists, as well as compacted gravels and sands, although less frequent, may also be encountered and influence the foundation design due to their nature and variability. Particular attention should be paid to the presence of local aquifers and to the heterogeneity of the ground, since there may be areas with significant permeability that alter the behaviour of the foundation.

Seismicity in Arcicóllar is high, with around 200 events over 30 years and a maximum magnitude of 5.1, which means designing structures in compliance with specific seismic regulations to ensure safety and suitability for the associated risk. Although karst is not present, the subordinate occurrence of expansive clays implies the need to check locally for their development, particularly in areas susceptible due to the climate, in order to prevent foundation pathologies. The fundamental constraint for the geotechnical study in this municipality therefore lies in the correct characterisation of seismicity and the point identification of expansive clayey soils.