Estudio geotécnico in Viladrau

In Viladrau, the ground is dominated by granite, gneiss and other igneous rocks, with a small presence of slates and schists. This type of material is characterised by high mechanical strength and a high bearing capacity, which makes it easier to adopt shallow or semi-deep direct foundations, provided that the depth of weathering is not significant. The formations generally show low permeability, although they may host deep aquifers; these aspects must be assessed to prevent seepage problems or foundations over zones weakened by subsurface water.

Seismicity in Viladrau is very low, with only 2 recorded events over 30 years and a maximum magnitude of 1.6, so it does not represent a relevant constraint for structural design. The non-clayey substrate rules out the risk of expansiveness, and the absence of karstic phenomena simplifies foundation conditions. Thus, the main geotechnical aspect to consider lies in the correct characterisation of the weathered rock to ensure adequate support for the structure.