Estudio geotécnico in Gudiña, A

In the municipality of Gudiña, A, the dominant ground is composed mainly of sandstones, conglomerates and flysch, together with a significant presence of compact gravels and sands. These materials generally provide an adequate bearing capacity for most shallow foundations, although it is essential to check the homogeneity and the possible local presence of less competent layers. The existence of extensive and discontinuous aquifers, with moderate permeabilities, suggests the need to control the groundwater level during construction to avoid stability problems or settlement in the ground.

The seismicity in Gudiña, A is considered high, with 200 events over 30 years and a maximum magnitude of Mmax 5, which requires integrating seismic design criteria into any structure proposed. Although subordinate expansive clays have been identified in the area, they do not constitute the dominant material and are not associated with climates with an anhydrous deficit, so the risk of expansivity remains under control but should not be dismissed in general terms. The main limiting factor in geotechnical study in this municipality lies in the appropriate characterisation of the bearing capacity in the presence of significant seismic events, and the potential influence of groundwater on ground behaviour.