Estudio geotécnico in La Albuera

In La Albuera, the geotechnical substrate is dominated by slates and schists, accounting for almost 60% of the local lithology. These materials, generally with low to moderate bearing capacity, exhibit competent behaviour for shallow foundations, although it is important to assess near-surface weathering. In addition, the presence of compact gravel and sand in close to a quarter of the ground surface provides areas with good bearing capacity and adequate drainage, which favours shallow foundation solutions in these areas. Sandstones, conglomerates and flysch, although less common, may involve ground heterogeneities that should be taken into account in structural design and during field investigation.

Seismicity in the municipality is rated as notable, with 52 events in the last 30 years and a maximum magnitude value of 4.4; therefore, seismic actions, although not extreme, should not be overlooked in structural sizing and in defining the type of foundation. As the substrate is non-clayey, there is no risk of expansiveness in the predominant materials, which significantly reduces the complications associated with swelling or shrinkage movements. The main geotechnical constraint in La Albuera focuses on the regularity and weathering of the slate-like materials and on the need to carefully assess the locally located conditions of heterogeneity and permeability before the start of works.