Estudio geotécnico in L'Espluga de Francolí

In L'Espluga de Francolí, the geotechnical study focuses mainly on subsoils formed by sandstones, conglomerates and flysch, which constitute most of the ground and present good conditions of stability and bearing capacity. The presence of fine sands and silts is relevant, as they may show a lower load-bearing capacity and a certain sensitivity to moisture, whereas compact gravel and sand, although less frequent, usually provide favourable behaviour for shallow foundations. The low overall permeability of the area minimises problems of washing and internal erosion, but it is necessary to consider the possible existence of deep aquifers in later stages of the project.

As regards seismicity, with 30 events recorded in the last 30 years and a maximum magnitude (Mmax) of 2.5, it is classified as moderate, so it does not represent a significant threat for the usual structural designs. The expansiveness of the ground does not pose high risks, since expansive clays appear subordinately and in climatic zones that do not present important water deficits. In summary, the main conditioning factor at this location corresponds to the granulometric heterogeneity of the materials, which requires detailed local characterisation in order to optimise the foundation type and depth.