Estudio geotécnico in Benaoján

In Benaoján, the geotechnical substrate is composed mainly of limestones, dolomites and marbles, with a smaller presence of sandstones, conglomerates and flysch. These lithologies, which are predominantly hard and competent in nature, usually provide an adequate bearing capacity for foundations, although it is essential to assess homogeneity and possible local fracturing. Fine sands and silts, which occur only very occasionally, can be restricted to near-surface deposits and, in general, are not considered suitable as a bearing stratum except in minor interventions.

The area shows notable seismicity with 51 events over three decades, although the maximum recorded magnitude (Mmax 2.8) is low and does not constitute a significant structural constraint. It is essential to highlight the presence of karstification in the carbonate materials, which requires specific verification through geophysical studies and boreholes before any foundation work, given the possibility of voids and subsidence. The non-clayey nature of the substrate rules out risks associated with expansivity; therefore, the main geotechnical constraint in Benaoján is provided by the development of karst features.