Geotechnical study in Noreña

In Noreña, the subsoils are mainly made up of sandstone, conglomerates and flysch, occasionally alternating with fine sands, silts and, in smaller proportions, bodies of limestone, dolomite and marble. In general, these materials provide good stability conditions and favourable bearing capacity, although the presence of less competent layers of sand and silt may restrict the foundation depth and require a detailed assessment of the bearing level.

The municipality has high seismicity, which calls for a structural analysis tailored to the current regulations, although the maximum recorded value (Mmax 4.2) does not exceed the most critical thresholds. It is important to consider the potential for karst in areas where limestone or dolomite outcrops, making it essential to verify its development before defining the foundation solution. Since the subsoil is not clayey, the risk of expansiveness is negligible, placing the karst verification as the primary limiting factor for the project’s feasibility.