Estudio geotécnico in Candamo

In Candamo, the dominant subsoil is made up of phyllites and schists, metamorphic materials with low permeability that provide a variable bearing capacity depending on the degree of weathering. Areas where limestone, dolostones and marble occur occasionally may show variability in ground behaviour, particularly with regard to bearing capacity, which influences the choice of the most suitable foundation. Detrital formations, such as fine sands and silts, are found only in specific places and usually require special attention in consolidation and settlement analyses. It is important to take into account the characteristic impermeability of the main soils, as well as the occasional presence of shallow aquifers associated with less compact layers.

Seismicity in the municipality is high, with 200 events recorded over the last 30 years, although the maximum observed magnitude (Mmax 4.2) means that moderate seismic criteria must be considered in structural calculations. Given the presence of limestone and dolostones, there is potential risk of developing karst processes, which requires a specific verification of karst before any foundation design to avoid subsidence or instability in the short and long term. As the subsoil is not clayey, risks related to expansivity are ruled out. The main geotechnical constraint in Candamo is monitoring stability against possible cavities associated with karst and the local analysis of bearing capacity in metamorphic materials.