Estudio geotécnico in Hoyo de Manzanares

In Hoyo de Manzanares, granite, gneiss and other igneous rocks predominate, accounting for more than 80% of the surface. These materials are characterised by high strength and low deformability, which implies excellent bearing-capacity conditions for buildings. Sandstones and conglomerates, present only occasionally, may also respond favourably in shallow foundations, provided that the presence of loose or altered layers is ruled out in the geotechnical boreholes.

Local seismicity in this municipality is very low, with only 5 reported events over 30 years and a maximum magnitude of 3, so it does not usually represent a determining factor in structural design. There is no risk of karstification and the absence of clayey soils rules out any risk of shrink-swell (expansivity). In summary, the main geotechnical constraint is related to the appropriate characterisation of the parent rock and the identification of altered or fractured zones in the ground profile.