Estudio geotécnico in Alameda de la Sagra

In Alameda de la Sagra, large expanses of water masses and carbonate rocks such as limestones, dolomites and marbles predominate, providing favourable conditions for bearing capacity for conventional foundations. The occasional presence of sandstones, conglomerates and compact gravel and sand levels contributes to variability in the support materials, although their incidence is limited. It is relevant to note the appearance, albeit rare, of gypsum, anhydrite and salts, as well as the subordinate presence of expansive clays, factors to be assessed in the foundation design, particularly to prevent the risk of dissolution and expansivity in localised areas.

From the geotechnical point of view, seismicity is very low, with only 2 recorded events every 30 years and a maximum magnitude of 2.7, so it does not constitute a relevant constraint for structural design. However, given the dominance of carbonate rocks and the existence of karstified conditions, it is essential that every real project carries out a specific karst verification prior to the execution of foundations, due to the potential risk of instability and underground voids. The possibility of dissolution processes in the presence of gypsum and the sporadic location of expansive clays make a detailed geotechnical study the main preventive measure in the municipality.