Estudio geotécnico in Quart de les Valls

In Quart de les Valls, limestones, dolomites and marbles predominate, suggesting ground with high mechanical competence and good bearing capacity for shallow foundations, provided that the continuity and quality of the rock are verified. The secondary formations of sandstones and conglomerates reinforce the overall stability, whereas the occasional presence of gypsum, anhydrite and salts introduces a certain risk of dissolution processes that may affect ground uniformity if persistent water flows exist. This geology generally suggests favourable conditions for construction, but with the recommendation to carry out a detailed analysis of the local lithology and, especially, the hydrogeology in depth.

The seismic level in Quart de les Valls is very low, with only 2 events over 30 years and a low maximum magnitude; therefore, seismic risk is not considered relevant for structural design. Nevertheless, the existence of ground susceptible to karstification due to the abundance of limestones and dolomites implies the need to identify possible cavities or voids before defining the foundation system, as these can affect long-term stability. The non-clayey substrate rules out concerns about expansivity, with the main geotechnical constraint being the possible presence of karst phenomena.