Geotechnical study in Wait

In the municipality of Espera, soils formed by sandstones, conglomerates and flysch predominate. These materials confer a generally good bearing capacity, favouring shallow foundations in many cases. The fractions of limestone, dolomite and marble introduce some variability in strength and may present relevant discontinuities, while the occasional presence of fine sands and silts means that their compaction must be assessed before deciding whether to use them as a support layer. The scarce presence of coarse granular soils implies that most interventions will have to be adapted to materials with low to medium permeability, and it is essential to identify any possible presence of superficial aquifers during the geotechnical study.

Seismicity in Espera is very low, with only 4 events in the last 30 years and a maximum magnitude of 3.4; therefore, seismic risk is not a primary concern in the foundation projects in the area. Nevertheless, the existence of calcareous and dolomitic formations requires verifying whether prior karstification has occurred before selecting the foundation type, as voids or dissolution processes can compromise ground stability. The non-clayey substrate rules out expansivity-related issues; consequently, the possible development of karst processes is the main factor to analyse during the geotechnical study in Espera.