Estudio geotécnico in Badalona

In Badalona, compact gravel and sand ground predominates, accompanied by notable outcrops of granite and gneiss, as well as a punctual presence of fine sands, silts and some levels of sandstone or conglomerates. This combination of soils generally offers a good bearing capacity, making it possible to choose shallow direct foundations in most projects, although it is essential to verify the compactness and continuity of the granular strata. The low frequency of cohesive soils limits problems associated with differential settlement; however, the possible presence of interbedded permeable layers requires controlling the groundwater level and its fluctuations during execution.

With regard to seismic hazard, Badalona shows very low activity, with only 5 events in 30 years and a maximum magnitude of 1.6, so seismicity does not represent a relevant constraint for structural design. Since the bedrock is mostly non-clayey, risks arising from expansivity are ruled out. Consequently, the main aspect to consider in the geotechnical study is the characterisation of the compactness and continuity of the coarse materials in order to ensure a stable and homogeneous level of support.