Estudio geotécnico in Hormigos

In Hormigos, the dominant substrate mainly consists of sandstones, conglomerates and flysch, representing more than 67% of the local geology, together with a significant proportion of limestones, dolomites and marbles. These materials, mostly of a granular nature and with variable strength, generally allow a favourable bearing capacity for conventional foundations. However, the presence of flysch can induce heterogeneity in the geotechnical profile and, in certain areas, occasional shales or schists may require additional studies to define an adequate foundation. The development of aquifers with moderate permeability suggests the need to assess the risk of the presence of groundwater level at depth, especially relevant for excavations and basements.

Seismicity in Hormigos is high, with around 200 events over 30 years and a maximum magnitude of 5.1, which means the structural design must strictly comply with the current seismic code. Although the risk of karstification is not significant, special attention should be paid to the potential expansivity of certain levels of dispersed clays within the matrix; this condition can negatively affect the stability of foundations if it is not addressed with appropriate construction solutions. The main limiting factor in this setting is the combination of seismic risk with the possible presence of moderately expansive soils, making it necessary to carry out a detailed geotechnical study before the start of any project.