Geotechnical study in Bembibre

In Bembibre, deltaic soils predominate, characterised by the notable presence of silts and peats—conditions that must be considered carefully, since these materials exhibit low bearing capacity and high deformability. In addition, it is common to find sandstones, conglomerates and flysch, which generally provide better conditions for foundations due to their strength, although the lithological heterogeneity necessitates specific studies. Foundation support levels formed by silts and peats should be avoided because of their high settlement potential, whereas outcrops of hard materials such as slates or overconsolidated clays may represent more favourable options for the base of the structure.

Seismicity in the municipality is very low, with only one recorded event over thirty years and a maximum magnitude of 1.7, so it does not constitute a relevant conditioning factor in the geotechnical studies of this area. The non-clayey substrate also rules out any risk of expansivity. The main aspect to consider in Bembibre is the significant presence of soft organic deposits, which must be rigorously identified and ruled out as a base for foundations, prioritising areas with greater lithological consistency to ensure the stability of the structures.