Estudio geotécnico in La Lastrilla

In La Lastrilla, soils formed by granite, gneiss and other igneous rocks predominate, comprising almost the entire geotechnical substrate of the municipality. These lithologies are characterised by high strength and are ideal for shallow (direct) foundations, as they exhibit high bearing capacity and low deformability. The formations, generally impermeable or with very low permeability, may host shallow aquifers in specific locations, which rarely affects the foundation except in the presence of weathered or altered zones.

Seismicity in La Lastrilla is high, with a record of around 200 events over the last 30 years and a maximum magnitude reaching 4.7; it is therefore essential that the structural design includes specific seismic actions. As the substrate is not formed by clayey materials, the risk of expansivity is ruled out, and there is also no presence of relevant karst features that could interfere with the foundations. The main technical consideration lies in the demanding seismic code, and it is necessary to verify the structural integrity under dynamic loading.