Estudio geotécnico in Hondarribia

In the municipality of Hondarribia, formations of sandstone, conglomerates and flysch predominate, followed by outcrops of limestone, dolomites and marbles. These materials provide competent subsoil, usually with high bearing capacity, which facilitates direct foundation solutions in most cases. The occasional presence of gravels and compacted sands also constitutes a suitable base, although local compactness must be verified. The low overall permeability of the ground limits infiltration, although small shallow aquifers may exist associated with more fractured areas.

Seismicity in Hondarribia is very low, with only 2 recorded events over 30 years and a low maximum magnitude, which minimises the need for special seismic constraints in structural design. No signs of karstification or expansivity problems are identified, as the subsoil is mostly non-clayey. The fundamental constraint for the geotechnical study in this locality lies in lithological characterisation and in the possible presence of aquifers at shallow level, with no relevant geotechnical risks associated with expansion or dissolution.