Estudio geotécnico in Coruña, A

In the municipality of A Coruña, the predominant subsoil is composed of sandstones, conglomerates and flysch, accompanied in smaller proportions by shales and schists. These lithologies usually exhibit competent behaviour and adequate bearing capacity for most building projects, although it is advisable to carry out checks on their degree of weathering and fracturing. The low permeability of these materials suggests that infiltration is limited, although shallow aquifers may exist, which must be assessed especially in areas with the presence of groundwater.

From the seismic point of view, the number of recorded events (20 over 30 years) corresponds to moderate seismicity, but with a low maximum magnitude (Mmax 1.8), which considerably reduces the specific requirements for structural seismic design. The absence of karst and the non-clayey nature of the subsoil rule out dissolution and expansivity-related problems, respectively. Therefore, the main limiting factor will be determined by the integrity and condition of the ground, rather than by geotechnical risks associated with mineralogy or significant seismic activity.