Geotechnical study in Cabrera d'Anoia

In Cabrera d'Anoia, soils formed by sandstones, conglomerates and flysch predominate. These materials generally provide an adequate bearing capacity and favourable conditions for shallow or semi-deep foundations, provided that the competent layer is verified. Fine sands, silts and, to a lesser extent, slates and schists may occur locally and can modify the mechanical conditions; the strength and consolidation parameters must therefore be analysed case by case in order to define the most efficient and safe foundation type.

Seismicity in the municipality is very low, with only one recorded event every 30 years and a maximum magnitude of 2, so it does not imply any special considerations for structural design. However, the geological context indicates the possible presence of karstification, which requires checking for cavities or unstable zones before proceeding with the foundation, as it could affect long-term stability. The absence of expansive clays rules out risks associated with expansivity; the main factor conditioning local geotechnics is therefore the prior assessment of potential karst and the correct identification of the bearing layer.