Estudio geotécnico in Vidreres

In Vidreres, granite and gneiss substrates predominate, accompanied by other igneous rocks, representing more than 60% of the materials present. This is added to by smaller proportions of compacted gravels and sands, as well as slates and schists. This composition contributes to a high bearing capacity for most foundations, although the low permeability of these soils may condition the management of groundwater and surface water during the construction phases. Direct foundations are suitable in most cases, but it is important to consider the possible presence of shallow aquifers over less permeable levels.

With regard to geotechnical risks, seismicity lies within a moderate range (49 events in the last 30 years, Mmax 3.3), although the maximum recorded magnitude does not pose a significant structural threat. Since the subsoil is non-clayey, the risk of expansivity is ruled out, which simplifies the selection of foundation solutions. In this context, the most relevant factor to control is the ground’s impermeability, which can influence drainage conditions and the hydraulic stability of the works.