Estudio geotécnico in Fuentes de Oñoro

In Fuentes de Oñoro, gravel and compacted sand soils predominate, which make up the greater part of the near-surface substrate and provide adequate bearing capacity for most typologies of shallow foundations. These materials exhibit favourable compactness, facilitating the construction of isolated footings or slabs, while the underlying formations of granite, gneiss and other igneous rocks provide an even more stable support when they emerge close to the surface. The less frequent presence of sandstones, conglomerates and flysch may require specific analyses to ensure uniform bearing capacity across the entire area.

The seismic risk in Fuentes de Oñoro is classified as very low, with only three recorded events in the last three decades and a maximum magnitude of 2,4; therefore, the seismic parameter does not represent a significant limitation for the design of foundations. The non-clayey substrate eliminates concern about soil expansivity, allowing attention to focus on the local heterogeneity of granular materials. In this way, the main aspect to be assessed in any geotechnical study for building work is the accurate identification of the type and compactness of the near-surface strata, ensuring the appropriate selection of the foundation system.