Estudio geotécnico in Valls

The municipality of Valls has a substrate dominated by compact gravel and sand, followed in significant proportions by fine sand, silts, and hard materials such as sandstones, conglomerates and flysch. The occasional presence of limestones, dolomites and marbles completes the geotechnical picture. These soils are generally compact and have low permeability, which favours good bearing capacity for shallow and deep foundations, but it is essential to assess the specific continuity and compaction condition on each plot in order to define the optimum foundation type.

Seismicity in Valls is moderate, with 32 recorded events over the last three decades and a maximum magnitude of 2.9, which implies a minimal influence on structural design. However, the presence of carbonate materials such as limestones and dolomites requires verifying whether prior karst processes exist before the foundation is carried out, as voids may occur that could compromise the stability of the structure. Since the substrate is not clayey, the risk of expansivity is ruled out; the main geotechnical constraint in this case is the possible existence of karstification.