Estudio geotécnico in Lanaja

In Lanaja, the dominant substrate is mainly made up of sandstones, conglomerates and flysch, which provides a competent and stable base for the execution of shallow and deep foundations. Other frequent ground elements include limestones, dolomites and marbles, as well as occasional layers of fine sands, silts and compact gravels. These soil types generally exhibit an adequate bearing capacity, although the localised presence of sands and silts may require specific analyses to avoid settlement problems. Permeability is usually low at the surface, although the existence of aquifers at greater depths cannot be ruled out and must be considered during excavations.

Lanaja is characterised by high seismic activity, recording around 200 events over 30 years and a maximum magnitude (Mmax) of 4.8; therefore, seismicity must be incorporated without fail in the structural design calculation criteria for buildings. In addition, the presence of calcareous formations indicates that karst is a relevant factor: it is essential to verify the existence of cavities or karst processes in order to avoid stability problems before designing any foundation. The non-clayey substrate rules out significant expansivity risks, confirming that the main geotechnical constraint in Lanaja is the possible influence of karst, in combination with the requirement for seismic design.