Estudio geotécnico in Portugalete

In Portugalete, the dominant subsoil is formed by limestones, dolomites and marbles, which favours a high bearing capacity for shallow foundations provided that excavations reach these competent materials. The occasional presence of fine sands and silts, as well as sections of urban anthropogenic fill, requires detailed characterisation to avoid differential settlements or areas that are locally less competent. In any case, foundations must be avoided on bodies of water or unconsolidated fill, prioritising support on sound rock whenever feasible.

Seismicity in Portugalete is notable, with 94 events recorded over the last 30 years, although with a maximum magnitude of Mmax 3.7, which does not impose special requirements at structural level. The non-clayey subsoil rules out the risk of expansiveness, simplifying the geotechnical assessment in relation to volumetric deformations. The main precaution in the area lies in the precise location of fill and in reaching competent rock for the foundation.