Estudio geotécnico in Vallbona d'Anoia

In Vallbona d'Anoia, the predominant geological substrate is mainly composed of slates and schists, which gives the ground a compact lithology and low near-surface permeability. The significant presence of granite, gneiss and other igneous rocks contributes to a medium-to-high bearing capacity, favourable for shallow foundations when deep alterations are not identified. The limestone formations, although only occasionally present in the area, can give rise to localised zones with higher permeability and, especially, it is essential to assess the continuity and depth of these materials before selecting the foundation type.

With regard to risk factors, seismicity is very low, with only 5 events over 30 years and a maximum magnitude of 1.6, so it is not considered relevant for structural design. However, due to the presence of calcareous and dolomitic materials, there is susceptibility to karst processes, so express verification is recommended before carrying out foundations that could be compromised by cavities or underground dissolution. The non-clayey substrate rules out the risk of expansion, positioning the possible presence of karst as the most important geotechnical factor to consider in the municipality.