Estudio geotécnico in Garafía

In Garafía, the dominant subsoil is composed mainly of sandstones, conglomerates and flysch, which provides favourable mechanical characteristics for conventional foundations due to its good bearing capacity and competent behaviour under structural loads. The occasional presence of granite, gneiss and other igneous rocks locally adds areas of even greater strength, although their representativeness is much lower. This lithological variety makes it possible to design direct foundation solutions in most cases, also taking advantage of the presence of aquifers with moderate permeability and production that help to drain the ground and minimise problems associated with high groundwater levels.

Seismicity in Garafía is very low, with only 3 recorded events in the last 30 years and a maximum magnitude of 3.3, which represents a low seismic risk in structural design. The absence of karst eliminates concern about underground cavities that could affect the stability of structures, and no significant risk of expansiveness has been identified either in the predominant materials. Taken together, the main geotechnical constraint in this locality lies in the accurate characterisation of the local lithology in order to optimise the foundation solution and manage the hydrological behaviour in building projects.