Geotechnical study in La Adrada

In La Adrada, the substrate is composed mainly of granite, gneiss and other igneous rocks, which give the ground high resistance and stability characteristics. These soils provide an adequate bearing capacity for most building projects, favouring the implementation of shallow or semi-deep foundations. However, the low permeability of these formations requires special attention to the management of surface water and protection against possible water accumulations in the vicinity of the foundation.

Seismicity in La Adrada shows moderate activity with 32 events over thirty years and a maximum magnitude (Mmax) of 2.8, so it does not represent a relevant limiting factor in structural design. The absence of clayey substrates eliminates the risk of expansivity, making it possible to rule out problems associated with volumetric movements. The main factor to take into account in this setting is the low permeability of the ground, which may influence the drainage of water and the durability of the works.