Estudio geotécnico in Los Llanos de Aridane

In Los Llanos de Aridane, geotechnical studies predominantly find a substrate of sandstones, conglomerates and flysch—consolidated materials that favour a high bearing capacity for buildings. Occasional areas present fine sands and silts, whose values of density and cohesion require specific analysis in order to define the optimum foundation depth. The characteristics of moderate permeability in these aquifers allow reasonable drainage, although it is recommended to study the groundwater table in the initial phases of the project in order to rule out risks of erosion or undermining.

Seismicity here is moderate, with 21 events over the last 30 years and a low maximum magnitude (Mmax 2.5), which minimises the influence of seismic effects in structural calculations. There are no signs of karstification and no soils with expansive potential are detected, thus facilitating the design and execution of shallow foundations. The main local constraint in Los Llanos de Aridane will be variability in grain-size distribution; accordingly, it is essential to define with precision the homogeneity of the infill or compaction required according to the results of the geotechnical study.