Estudio geotécnico in Sevilla la Nueva

In Sevilla la Nueva, the predominant subsoil consists of sandstones, conglomerates and flysch, accounting for more than 85% of the surface area, which provides a solid foundation with good bearing capacity for conventional foundations in building works and civil engineering. Limestones, dolomites and marbles occur occasionally and can offer locally more competent points. The presence of aquifers with moderate permeability and production, extensive but discontinuous, requires particular attention to local hydrogeological behaviour and its influence on construction options, although, in general terms, it does not pose major limitations at a global level for supporting the structures.

Seismic activity in the municipality is very low, with five events over thirty years and a maximum magnitude of 3, so it does not represent a relevant constraint for structural design. No signs of karstification or risks arising from cavities or subsidence are detected. As regards expansivity, although non-expansive or dispersed clays appear in a non-clayey matrix, the risk of expansivity is low, so this factor does not constitute a significant constraint for the foundation. The main focus should be on the precise identification of the load-bearing horizons and the correct characterisation of the associated water regime linked to the aquifers present.