Geotechnical study in Berga

In Berga, the dominant substrate is formed by sandstones, conglomerates and flysch, present at 93,75%, accompanied in isolated instances by limestones, dolomites and marbles. As these materials generally show low permeability at the surface, they are favourable for conventional direct foundations, providing good bearing capacity for buildings; however, the possible presence of aquifers at some depth may require the analysis of hydrogeological impacts depending on the type of intervention envisaged.

Seismic activity in the municipality is very low, with only 5 recorded events over thirty years and a low maximum magnitude (Mmax 1,6), which rules out special requirements in terms of earthquake-resistant design. Meanwhile, the non-clayey substrate makes it possible to rule out risks associated with ground expansivity. In short, the main geotechnical constraint in Berga lies in the variability of the lithological structure, so it is essential to characterise the continuity and properties of the layers for an optimal foundation proposal.