Geotechnical study in Houses of Fernando Alonso

In Casas de Fernando Alonso, a rocky substrate predominates, composed largely of limestones, dolomites and marbles. These materials provide a high bearing capacity for shallow and deep foundations. The minor presence of gypsum, anhydrite and salts introduces an additional consideration, since these materials will be associated with a risk of dissolution, which may affect the long-term stability of the structures. The overall low permeability of the formations indicates limited migration of surface water, although the existence of aquifers at depth should not be ruled out.

The municipality records moderate seismicity, with 40 events in the last 30 years and a maximum magnitude of 4.1, which means it must be taken into account in the analysis prior to structural design. It is essential to verify the existence of karst features in the ground before proceeding with any foundation, given the high frequency of carbonate materials; these cavities can significantly compromise the safety of the works. The non-clayey substrate rules out the risk of expansivity, so the main technical constraint is the possible presence of karst processes in the subsoil.