Estudio geotécnico in Vinyols i els Arcs

In Vinyols i els Arcs, compact gravels and sands predominate, constituting approximately 75% of the subsoil, while the remainder corresponds to fine sands and silts. This grain-size profile provides good bearing capacity for shallow foundations, although the occasional presence of silts may require detailed characterisation to avoid localised settlement. The high permeability associated with these materials favours natural drainage, but it requires attention to the groundwater level in areas where it outcrops in order to avoid problems in cases of deep foundations.

Seismicity in this municipality is very low, with only one recorded event in the last 30 years and a maximum magnitude of 1.6, so it does not represent a relevant constraint in structural design. The non-clayey subsoil rules out the presence of risks associated with expansivity or volumetric shrinkage. There is no evidence of karst processes in the area, and the main aspect to consider for the geotechnical study is grain-size heterogeneity and the possible presence of groundwater levels in relation to the local aquifers.