Estudio geotécnico in Castellví de Rosanes

In Castellví de Rosanes, the subsurface strata are predominantly slates, schists, sandstones and flysch—lithologically compact materials that provide a good bearing capacity for conventional foundations. Limestones, dolomites and marbles occur occasionally and may locally improve ground conditions; however, the limited presence of fine sands and silts calls for caution, as they may exhibit slight compressibility. This set of materials, mostly of low permeability at the surface, ensures stability for shallow or semi-deep foundations, although if isolated sandy layers are encountered, it will be necessary to assess their degree of consolidation.

The seismicity of Castellví de Rosanes is very low, with just a single event in the last 30 years and a maximum magnitude of 2.5, which implies an irrelevant seismic risk for buildings. The non-clayey substrate rules out the presence of significant expansivity. Nevertheless, given that calcareous formations susceptible to karst-related phenomena are identified, it is essential to carry out a detailed check of the development of cavities or dissolution processes before carrying out the foundations, this being the most relevant technical constraint for the area.