Estudio geotécnico in Sant Iscle de Vallalta

In Sant Iscle de Vallalta, the bedrock is predominantly granite, gneiss and other igneous rocks, representing more than 80% of the ground, complemented in lesser proportions by slates and schists. These materials are characterised by offering a high bearing capacity and good stability for shallow (direct) foundations, although their very low permeability implies limited surface drainage and the possible local presence of shallow aquifers. The scarcity of altered cohesive soils simplifies the conditions for the design of isolated footings and slabs, minimising the risk of significant differential settlements.

The seismic activity recorded in the area is moderate, with 17 events over 30 years and a maximum magnitude of 3.5, which implies standard structural consideration but no special requirements. The absence of karst and clayey soils effectively eliminates the risks associated with voids or expansivity. Therefore, the main geotechnical constraint is determined by the compactness of the rock substrates and by attention to any possible shallow aquifers in the case of excavations or shallow foundations.