Estudio geotécnico in Torrejón de Velasco

In Torrejón de Velasco, the dominant geological substrate is formed by limestones, dolomites and marbles—materials that are recognised for their high strength and good bearing capacity, and which are suitable for direct foundations when they are found in a compact state and without alteration. Sandstones and conglomerates, which are frequently present, add heterogeneity to the profile, although they can provide good geotechnical parameters provided they are not strongly fractured. The uncommon presence of compact gravels and sands can also offer suitable foundation options, although their low proportion makes them less relevant. Nevertheless, in areas where expansive clay crops out locally, the risk of swelling must be assessed before defining the support solution, as it may seriously compromise foundation stability.

The level of seismicity in Torrejón de Velasco is very low, with only 5 events in the last 30 years and a maximum magnitude of 3, which makes it possible to rule out seismicity as an essential design constraint. However, the existence of karstic ground requires specific studies to verify cavities and ground dissolution before building, due to the possibility of localised subsidence. As the main limiting factor in the municipality, the potential for karstification stands out alongside localised episodes of expansive clays—elements that require detailed geotechnical characterisation before embarking on any work.