Estudio geotécnico in Villanueva del Fresno

In Villanueva del Fresno, the geological substrate is dominated by slates and schists, which gives the ground a moderate but stable bearing capacity for conventional shallow direct foundations. The formations of clays and peats, although very infrequent, are not suitable as a bearing level and should be avoided when selecting the foundation depth. The secondary presence of granite and gneiss provides areas with greater competence, whereas sands and fine silts may exhibit some degree of local compressibility. The general impermeability of these materials reduces the risk of delayed settlements due to leaching or migration of fines, enabling shallow foundation designs except in cases where organic deposits are encountered.

Seismic activity in the municipality is very low, with only 6 events recorded over 30 years and a maximum magnitude of 3, which implies a small influence of seismic actions on structural design. However, the existence of karst phenomena in the area requires an exhaustive verification of underground cavities before carrying out any foundation work, given the possible presence of dissolutions that could affect structural stability in the long term. The non-clayey nature of the substrate rules out risks of expansivity, highlighting the karst-related condition as the main aspect to be investigated in local geotechnical studies.