Estudio geotécnico in Fair

In the municipality of Feria, sandstone, conglomerates and flysch predominate as subsoil materials; they account for more than half of the area and generally provide good bearing-capacity conditions, allowing shallow foundations in most cases. The occasional presence of slates and schists may affect the ground’s homogeneity, while the existence of limestone and dolomite horizons means it is necessary to identify any potentially more heterogeneous or fissured zones. The low overall permeability of the substratum limits infiltration, although aquifers may occur in more superficial sectors.

With regard to geotechnical performance, seismic activity in Feria proves to be very low, with only 4 events in 30 years and a maximum magnitude of 4.3, so seismic risk has a lesser impact on structural design. However, owing to the presence of carbonate materials such as limestones and dolomites, there is a possibility of karst development, which makes detailed verification essential to rule out cavities or sinkholes before executing foundations. As no predominant clayey substrata are found, concern about expansiveness is eliminated; karst is therefore the main technical constraint to be studied in depth.