Estudio geotécnico in Mendigorria

In Mendigorria, the dominant geological materials are sandstones, conglomerates and flysch, present in most of the municipality. These soils usually exhibit good bearing capacity, allowing conventional shallow foundations in most cases, provided that support is not placed on unstable layers. Occasionally, fine sands, silts and compact gravel and sand deposits are also found; these materials may require additional attention in terms of compaction and the homogeneity of the foundation stratum. The minor presence of gypsum, anhydrite and salts implies a potential risk of dissolution that must be analysed in the initial phases, particularly in areas with a high water table or close to masses of water.

Seismicity in Mendigorria is moderate, with 25 events over the last 30 years and a maximum magnitude of 2.2, indicating a low seismic risk for buildings. As no expansive clay soils have been detected, the non-clayey substrate rules out the risk of expansivity, thereby simplifying the geotechnical considerations. However, the possible existence of karstification must be verified rigorously before executing any foundation, as the dissolution of gypsum, anhydrite or salts can create voids that compromise structural stability. The main recommendation is to focus the geotechnical study on identifying and characterising possible cavities and assessing the presence of dissolvable gypsum.