Geotechnical study in Zeánuri

In Zeanuri, the subsoil is mainly composed of sandstones, conglomerates and flysch, with a significant presence of limestones, dolomites and marbles. The geomechanical characteristics of these lithologies often provide an adequate bearing capacity, which facilitates the selection of shallow or semi-deep foundation systems in most cases. Fine sands and silts, although present in a very low proportion, may require spot checks in specific areas to prevent differential settlement problems.

The recorded seismic activity is notable, with 94 events over 30 years and a maximum magnitude of 3.7, so the local seismic response must be taken into account when designing the structures, but without constituting a serious threat. Given the substantial proportion of limestones and dolomites, the risk of karstification is significant and it is essential to verify it before considering the foundation. The non-clayey subsoil removes concerns about expansivity, leaving as the primary technical constraint the control of the development of karst cavities and the correct characterisation of the rocky ground.