Geotechnical study in Bustarviejo

In Bustarviejo, formations of slate and schist predominate, followed by the notable presence of granite, gneiss and other igneous rocks, whereas compacted gravels and sands appear rarely. Since these materials are metamorphic and igneous rocks, they generally offer a high bearing capacity and very low deformability, favouring direct shallow foundations and reducing the likelihood of significant differential settlements. The low permeability of these substrata limits the flow of groundwater, but does not prevent the existence of small local aquifers.

Seismicity in Bustarviejo is very low, with just 5 events over 30 years and a maximum recorded magnitude of 3, which does not constitute a significant threat to the structures being designed. The non-clayey substratum eliminates the risk of expansivity affecting the foundations. In this way, the most notable geotechnical factor for the municipality lies in the presence of competent and stable materials, which greatly simplifies foundation strategies in new urban or building developments.