Estudio geotécnico in Deba

In Deba, the subsurface is dominated by limestones, dolomites and marbles, highly competent materials that usually provide good bearing capacity for most buildings. Also frequently found are sandstones, conglomerates and flysch, which contribute to a resistant base, although heterogeneous. Occasionally, muds and peats of deltaic origin may be encountered; their unfavourable mechanical properties rule out their use as a foundation support level, and they must be avoided in geotechnical design.

Seismic activity in Deba is very low, with only 6 events in the last 30 years and a maximum recorded magnitude of 2.1, which implies a minimal seismic demand in construction projects. However, given the widespread presence of carbonate materials, it is essential to check the development of karst processes before defining the foundation, as voids or subsidence may exist. In addition, the absence of clayey substrates eliminates the risk of expansivity. The main constraint in the area is therefore the possible presence of karst, which requires exhaustive investigation in the geotechnical study.