Geotechnical study in Manzanilla

In Manzanilla, soils formed by limestones, dolomites and marbles predominate, followed by slates and schists. The majority presence of carbonate materials suggests a considerable bearing capacity, making them suitable for shallow foundations under normal conditions, although the general impermeability of the formations may retain superficial aquifers in certain areas. The slates and schists introduce some heterogeneity, but they rarely compromise the stability of the support in any significant way, depending on their degree of weathering and structure.

Seismicity in this area is very low, with barely three recorded events in the last three decades and a low maximum magnitude, so it is not a relevant factor when designing the foundation. Since the underlying ground is not clayey, the risk of expansiveness in the materials present is ruled out. The main geotechnical constraint in Manzanilla is associated with the accurate identification of the impermeable strata and the possible groundwater level—critical points to assess in order to ensure the durability and stability of the foundations.