Estudio geotécnico in Gavà

In Gavà, the subsoil is composed mainly of carbonate formations such as limestones, dolomites and marbles, as well as overconsolidated clays and marls of notable hardness, and a significant presence of fine sands and silts. This geological profile generally provides good bearing capacity, which favours the design of shallow foundations; however, lithological variability makes it necessary to carry out specific geotechnical studies at each site. The high permeability associated with the presence of extensive aquifers reinforces the importance of thoroughly analysing the hydraulic behaviour of the ground, particularly in areas of sands and silts.

In terms of natural hazards, the seismicity of Gavà can be considered moderate, with approximately 30 events recorded over three decades, although with a low maximum magnitude (Mmax 2), which limits its impact on conventional structural design. It is essential to verify the possible presence of karstification in the carbonate materials before carrying out any foundation work, as these structures can compromise ground stability. The absence of clayey strata rules out the risk of expansiveness; the most determining factor in the area is the potential presence of karst cavities and the local behaviour of the aquifer.