Estudio geotécnico in La Nucia, la

In La Nucia, the geological substrate is dominated mainly by limestones, dolomites and marbles, providing a competent rock foundation that usually offers good bearing capacities for buildings. The occasional presence of fine sands, silts, gravels and overconsolidated clays introduces some heterogeneity, although hard, stable ground predominates. Areas with gypsum, anhydrite and salts have been identified, which may entail a risk of dissolution and subsidence—factors to be taken into account particularly in the design of foundations. If fine materials and soft soils are present, they must be investigated thoroughly to ensure adequate support and avoid differential settlement.

Seismic activity in La Nucia is significant, with 52 events in the last 30 years, although of moderate magnitude, which requires an appropriate structural check. Additionally, given the dominant calcareous nature of the subsoil, it is essential to verify the presence of karst processes before proposing any foundation, as the development of cavities can compromise structural stability. The non-clayey substratum eliminates the risk of expansiveness. In short, the main geotechnical constraint is the potential presence of karst and the influence of gypsum, so the geotechnical study must focus on delineating these factors for a safe design.