Estudio geotécnico in El Pedernoso

In El Pedernoso, the geotechnical substrate consists mainly of limestones, dolomites and marbles, accompanied by a significant proportion of gypsum, anhydrite and salts. Since these materials are hard, compact rocks, they generally exhibit good bearing capacity, allowing direct support of the foundations provided that any altered or superficially weathered layers are ruled out. However, the presence of silica and salts implies the possibility of dissolution processes, which may compromise long-term stability if not assessed properly. Permeability is generally low, although there may be deep aquifers that must be identified to prevent hydrogeological impacts on the works.

Seismic activity in the area is moderate, with 40 recorded events over 30 years and a maximum magnitude of less than 4.5, so seismic risk does exist but is not high and does not require special measures beyond the usual regulations. It is essential to take into account the possible presence of karstification in the limestone and gypsum massif, and it is recommended that the presence of cavities be thoroughly verified before proceeding with foundation works. The non-clayey substrate eliminates the risk of expansivity. In short, the main limiting factor in El Pedernoso lies in the potential for karst and the appropriate assessment of dissolution processes involving gypsum and salts.