Estudio geotécnico in Agurain/Salvatierra

In Agurain/Salvatierra, the predominant geological substrate is characterised by the majority presence of limestones, dolomites and marbles, providing the ground with high mechanical competence and good bearing capacity for shallow or deep foundations. Although sandstone and conglomerate formations occur occasionally, their distribution does not represent significant constraints at most sites. The scarce clays and hard marls, being overconsolidated, do not generate any relevant instability problems, and in addition the surrounding area is generally of low permeability, facilitating the hydrogeological stability of the usual foundations.

The seismic risk in the municipality is very low, with barely any recorded event over thirty years and an estimated maximum magnitude that is very low (Mmax 1.6), which minimises the influence of seismicity on geotechnical design. However, the predominance of carbonate materials implies a high susceptibility to karst processes, so it is essential to carry out specific checks for the existence of cavities, dissolutions or loss of support before defining the foundation. The absence of expansive clays eliminates the risk of expansivity, with the main geotechnical constraint being the possible presence of karstification in the bedrock substrate.