Estudio geotécnico in Elgoibar

In Elgoibar, the dominant geological substrate is made up mostly of limestones, dolomites and marbles, accounting for more than 70% of its presence. These hard materials are complemented by outcrops of sandstones and flysch, as well as small areas of granite or gneiss. Carbonate rocks favour a high bearing capacity, enabling the execution of shallow foundations, although the occasional presence of softer materials may require local checks on ground competence. The general permeability of the area is low, with the possibility of aquifers only in superficial levels, which minimises risks associated with rising groundwater.

Seismic activity in Elgoibar is classified as very low, with scarcely five recorded events over thirty years and a maximum magnitude of 3.7, meaning that seismic risk is practically irrelevant for structural design. There is no evidence of significant karstic developments, and since the substrate is not clayey, it rules out expansion-related problems. As the main condition, the competent, massive nature of the limestones facilitates foundation design, although point attention is recommended to potential lithological heterogeneities in areas where less consolidated materials might alternate.