Geotechnical study in Fuente de Piedra

In Fuente de Piedra, the ground is predominantly formed by sandstones, conglomerates and flysch, to which significant proportions of fine sands and silts are added, and, to a lesser extent, gravels and carbonate formations such as limestones, dolomites and marbles. This lithological mosaic generally provides adequate bearing capacity, although the presence of flysch may introduce some heterogeneity in the geotechnical parameters and requires precise characterisation in order to size foundations correctly. The soils, being mostly of low permeability, offer stability against seepage, although they may contain local shallow aquifers that should be identified during the geotechnical investigation.

Seismic activity in the area is at a moderate level, with 28 recorded events over thirty years and a maximum magnitude of 3.6, so the seismic factor is relevant, particularly for sensitive structures or large-scale buildings. The karst associated with the carbonate formations means that it is necessary to thoroughly verify the existence of cavities or dissolution processes before defining the foundation strategy, in order to avoid possible differential settlements. As it is not an clayey substrate, the risk of expansiveness is ruled out. The main factor to take into account in this municipality is therefore the possible presence of karstification, which is fundamental in the geotechnical study process prior to any work.