Estudio geotécnico in Chillón

In Chillón, the dominant materials are slates and schists, accompanied by smaller areas of hard clays and marls, as well as occasional outcrops of granite and sands. This type of bedrock substrate usually provides a good bearing capacity for shallow (direct) foundations, although the occasional presence of fine deposits and the proximity of water bodies may require particular attention in relation to ground saturation and low permeability. In areas with clays and marls, as they are overconsolidated and generally hard, the risk of differential settlement is reduced; however, elevated groundwater levels can influence the choice of foundation type.

Seismicity in Chillón is high, with more than 200 events recorded over 30 years and a maximum magnitude of 5.1, which means that seismic loads must be considered in structural design. No risks associated with karst or expansivity have been identified, as the substrate is not composed of expansive clayey materials. Therefore, the main geotechnical constraint in the area is the influence of seismicity and the local presence of low-permeability materials, making it essential to assess these factors in any geotechnical study prior to construction.