Estudio geotécnico in Santa Comba

In Santa Comba, the dominant subsoil is mainly composed of slates and schists, with a significant presence of sandstones, conglomerates and flysch. These formations generally provide favourable bearing capacity for foundations, with the consistency of the metamorphic and sedimentary materials being particularly noteworthy, although some variability may be observed in the degree of compaction and in the presence of fracturing. Granite, gneiss and other igneous rocks are also occasionally found, and their good geomechanical values contribute to the stability of foundations. Fine sands and silts, present only very sporadically, are usually ruled out as a bearing layer due to their potential compressibility.

Seismicity in the area is moderate, with 30 events recorded in the last 30 years and a maximum magnitude of 4, which indicates seismic activity that cannot be ignored, although it does not represent the main constraint for structural design. Since the subsoil is not clayey, the possibility of expansivity as a geotechnical risk in Santa Comba is ruled out. Therefore, the factor with the greatest influence in local geotechnical studies will be a detailed assessment of the heterogeneity and the degree of weathering of the predominant materials.