Geotechnical study in Villasequilla

In Villasequilla, the dominant substrate is mainly composed of limestones, dolomites and marbles, materials which generally provide excellent bearing capacity for shallow foundations. However, the occasional presence of water masses and the low proportion of expansive clays, granites and gravels suggest areas of heterogeneous behaviour with variable characteristics, so it is essential to characterise the specific lithology before carrying out any foundation. The predominant formations exhibit very low permeability, although shallow aquifers may occur due to local conditions.

With regard to geotechnical risks, the potential for the development of karstic phenomena is present and must be assessed through detailed inspection in order to avoid problems of subsidence or voids in the ground before foundation works begin. The seismicity in Villasequilla is classified as moderate, with 42 events over 30 years and a maximum magnitude of 2.7, which implies a low level of risk. As it is not an clayey substrate, the risk of expansiveness can be considered ruled out for most sites. The key constraint will be verifying the karst and undertaking localised characterisation of the load-bearing lithology.