Estudio geotécnico in Azpeitia

In Azpeitia, the dominant geological substrate is mainly composed of limestones, dolomites and marbles, hard and competent materials that account for approximately 68% of the surface. The mechanical characteristics of these soils are, in general, favourable for bearing capacity and provide good parameters for foundation design. In sectors where sandstones, conglomerates and flysch crop out, present occasionally, the geotechnical properties may vary. No significant permeability problems are identified, although shallow aquifers may exist in some areas, which should be considered in the foundation project.

The seismicity recorded in Azpeitia is very low, with only 8 events over 30 years and a maximum magnitude of 1.9, so seismic risk can be considered practically negligible in terms of structural design. Given the predominance of calcareous formations, it is essential to verify the presence of karstification before carrying out any foundation, as cavities or conduits may exist that condition ground stability. The absence of clayey substrates eliminates the risk of soil expansivity. The main geotechnical constraint in the area is therefore the possible presence of karst-related processes.