Geotechnical study in Zierbena

In the municipality of Zierbena, soils comprising limestone, dolomites and marbles predominate by a wide margin, representing more than 88% of the substrate. As these materials are high-strength carbonate rocks, they provide excellent bearing capacity for foundations, facilitating the design and execution of stable structures. The occasional presence of urban anthropogenic fill suggests that, in specific areas, detailed characterisation will be necessary to ensure that the foundations do not settle on soils with variable composition and lower strength.

From the perspective of geotechnical hazards, local seismicity is very low, with only a single event recorded over 30 years and a maximum magnitude of 1.5, which implies a practically negligible seismic influence for structural design. As the substrate is non-clayey, any risk associated with ground expansivity is ruled out. The main constraint in Zierbena will be correctly identifying areas with possible fill and ensuring adequate waterproofing with respect to the shallow aquifers present in the surrounding area.