Estudio geotécnico in Sant Boi de Llobregat

In Sant Boi de Llobregat, soils formed by fine sands and silts predominate; these materials usually provide good bearing capacity and facilitate shallow foundation works, especially in residential and industrial projects. In addition, the significant presence of overconsolidated clays and marls provides an additional level of stability, since these hard soils reduce delayed deformations. Slates and schists crop out in smaller quantities, but they can offer some reinforcement to the geotechnical profile. The extensive aquifer network and the high permeability of the soils require particular attention to managing the groundwater level during the construction phase.

Seismicity in the municipality is very low, with only a single recorded event and low maximum magnitude (Mmax 1.8), which does not represent a relevant constraint for structural design. However, attention should be paid to the possible presence of karst-related phenomena, since karst has been reported in the area; detailed investigation is essential before carrying out any deep foundation works or designing large structures, in order to prevent abnormal settlements or collapses. There is no risk associated with expansive clays in the substrate, which simplifies foundation sizing. The main geotechnical constraint in Sant Boi de Llobregat is therefore the verification and characterisation of the potential karst beneath future developments.