Estudio geotécnico in Obejo

In Obejo, the dominant subsoil is composed mainly of slates and schists, providing a generally competent but low-permeability foundation for shallow foundations. These metamorphic rocks confer a moderate bearing capacity, although it is essential to carry out borehole investigation campaigns to identify any possible discontinuities or altered zones. Granites and gneisses appear in places, together with smaller outcrops of sandstones, conglomerates and flysch, which can locally modify the bearing conditions. The characteristic low permeability of these materials may favour the presence of perched groundwater levels, an aspect to be taken into account when selecting and designing the foundation.

Local seismicity is very low, with only 5 recorded events over 30 years and a maximum magnitude of 3.3, which minimises the seismic requirements in structural design. However, the potential presence of underlying karst makes it essential to verify the existence of cavities or dissolution processes before defining the foundation type, as these phenomena can significantly affect ground stability. The absence of an clayey subsoil rules out risks of expansivity, positioning the checking of karst-related phenomena as the main constraint for a suitable geotechnical study in Obejo.