Estudio geotécnico in Castell d'Aro, Platja d'Aro and s'Agaró

In the municipality of Castell d'Aro, Platja d'Aro i s'Agaró, a substrate is predominant comprising mainly granite, gneiss and other igneous rocks, complemented in a smaller proportion by compact gravels and sands. These materials are characterised by their high strength and stability, providing excellent bearing capacity for direct foundation in most cases. The presence of formations that are generally impermeable limits water infiltration, although some restricted shallow aquifer may exist.

Seismic activity in the area is very low, with only two events recorded over thirty years with a maximum magnitude of 1.6, which implies favourable seismic conditions for the development of construction projects without the need to adopt special measures on this account. In addition, as the substrate is non-clayey, the risk of expansiveness is ruled out, with the compactness and strength of the rock mass being the determining factor to consider in the geotechnical study.