Estudio geotécnico in Santa Eulàlia de Riuprimer

In Santa Eulàlia de Riuprimer, the subsoil is mainly composed of sandstones, conglomerates and flysch, accounting for approximately 68.75% of the soil types present. These materials, generally compact and of low deformability, provide good bearing capacity, although in areas where there are white or soft expansive clays (31.25%), it is essential to assess the stability conditions in detail when choosing the type of foundation. The low permeability of the formations may affect surface drainage and hydrological behaviour in the vicinity of the works.

Seismicity is very low, with only 5 recorded events over the last 30 years and a maximum magnitude of 1.6, which makes it a factor of little relevance for structural design. The non-clayey substrate rules out the risk of significant expansivity for most structures; however, it is essential to identify and avoid areas with a localised presence of expansive clays. The main geotechnical constraint lies in the location of these clayey zones and in the appropriate management of groundwater due to the low permeability of the predominant soils.