Estudio geotécnico in Zaratán

In Zaratán, the subsoil is mainly dominated by limestones, dolomites and marbles, which provides a solid and common basis for foundations. These materials generally offer a high bearing capacity, although they may show some heterogeneity in terms of fracturing or compaction. The occasional presence of gypsum, anhydrite and salts is an additional factor to consider, as they can give rise to dissolution phenomena, compromising the stability of certain sections and making a specific inspection necessary when designing the foundations.

The area is characterised by high seismicity, with more than 150 events over 30 years and a maximum magnitude of 4.7, so seismic action must be incorporated into the structural analysis in accordance with the applicable regulations. The bedrock is not clayey, ruling out the risk of expansiveness in the foundation soils. The main technical constraint in Zaratán lies in seismicity and in the possible localised sources of dissolution associated with gypsum and salts, which must be assessed during the geotechnical study.