Estudio geotécnico in Llançà

In the municipality of Llançà, the predominant subsoil is composed of slate and schist, covering more than 90% of the surface, whilst formations of granite, gneiss and other igneous rocks appear occasionally. These materials, generally compact and of low permeability, provide good conditions for shallow foundations, ensuring adequate bearing capacity. However, superficial aquifers can be found in discontinuities within these materials, so it is advisable to carry out detailed characterisation to avoid problems associated with water in foundation work.

Seismic activity in Llançà is very low, with only 2 events over 30 years and a maximum recorded magnitude of 3.3, which indicates that this factor is not a relevant constraint for structural design. There are no signs of karstification in the surrounding area, and the subsoil is not clayey, ruling out the risk of expansivity. The main constraint lies in the characterisation of the rock and the possible presence of groundwater, which are key aspects to assess in any geotechnical study in this area.