Estudio geotécnico in Castañar de Ibor

In Castañar de Ibor, substrates of slate and schist predominate, accounting for more than 75% of the soils identified. These lithologies are characterised by low permeability and relatively stable behaviour, which favours good bearing capacity at most sites. The occasional presence of granite, gneiss and igneous rocks introduces areas with greater stiffness, whereas hard clays and marls, although scarce, can provide good conditions as a bearing layer due to their high cohesion and low risk of compressibility. In general, shallow and semi-deep foundations are viable, prioritising verification of the homogeneity of the substrate in the immediate vicinity.

The municipality shows notable seismicity, with 56 events recorded over the last 30 years, although the maximum historical magnitudes (Mmax 3.1) do not reach the threshold that would require specific measures in conventional structural design. No karstification or signs of expansive soils are identified; the substrate is predominantly non-clayey, which rules out expansivity risks that could affect the foundations. The main factor conditioning in Castañar de Ibor will be the accurate checking of the condition and continuity of the slates and schists in the intervention zone to ensure stability and avoid surprises during excavation or construction development.