Geotechnical study in Castro de Rei

In Castro de Rei, the predominant subsoil corresponds to slates and schists, metamorphic materials with low porosity and generally high bearing competence, which provides satisfactory bearing capacity for well-designed shallow foundations. These materials usually have low deformability, although they could show some heterogeneity in their strength. The soils of fine sands, silts and occasional layers of gravels and compact sands require a specific analysis to select the most convenient foundation type, although their presence is less significant in the area.

Seismicity in the municipality is moderate, with a frequency of 14 events in the last 30 years and a maximum magnitude of 3.3, so seismic actions on structures are of little relevance. The non-clayey subsoil rules out concerns about expansivity, facilitating the selection and safety of foundation solutions. In conclusion, the absence of critical constraints such as karst or high seismicity and the stable nature of the dominant materials create a suitable environment for conventional geotechnical interventions.