Estudio geotécnico in Utrera

In the municipality of Utrera, fine sands and silts predominate as the substrate, together with a significant presence of limestones, dolomites and marbles. This geological setting favours variable bearing capacities, with the carbonate formations generally being suitable for shallow foundations due to their firmness, except for areas that are locally altered. Fine sands and silts may require detailed analysis to avoid possible differential settlements, particularly in zones where there are layers of low compaction. The substrate exhibits low permeability, although the presence of shallow aquifers is possible locally, which may influence the choice of foundation system depending on the groundwater table.

Seismic activity in Utrera is moderate, with 48 recorded events over the last 30 years and a maximum magnitude of 3.7, enabling structural design without stringent seismic requirements. Given the predominance of carbonate formations, there is a potential risk of karst development; therefore, it is essential to verify the existence of cavities or zones of dissolution before the start of any foundation work to prevent incidents of surface subsidence. As the substrate is non-clayey, the risk associated with expansivity is ruled out. In summary, the possible presence of karst is the most determining geotechnical aspect in any pre-construction geotechnical study in this municipality.