Estudio geotécnico in La Coronada

In La Coronada, substrata are predominantly made up of sandstones, conglomerates and flysch, with a notable presence of gypsum, anhydrite and salts, as well as occasional contributions of carbonate materials. These soil types usually show adequate bearing capacity for conventional buildings, although the low permeability of the formations limits the natural drainage of water. The existence of gypsum and salts implies a risk of dissolution, so it is essential to carry out an in-depth geotechnical characterisation before defining the foundation solution, avoiding any impact on these horizons wherever possible.

Seismic activity in the municipality is classified as notable, with 52 recorded events over the last three decades and a maximum magnitude of 4.4, which requires assessing possible seismic effects during structural planning. Since the substratum is essentially non-clayey, the risk of expansivity is ruled out. The main constraint for foundation projects lies in the interaction with gypsum- and salt-bearing soils, which require particular attention due to their potential for dissolution and the associated differential settlements.