Estudio geotécnico in Caldes d'Estrac

In Caldes d'Estrac, the subsoil is composed mainly of fine sands and silts, together with an equally significant percentage of granite, gneiss and other igneous rocks. This combination favours moderate to high bearing capacities, especially in the rock outcrop areas. However, the presence of silts alongside the sands may require a detailed review of ground compaction and uniformity before designing any type of foundation. Compact gravel and sand appear occasionally and locally, which can provide better point conditions for structural supports.

Seismicity in Caldes d'Estrac is very low, with barely five events over thirty years and a maximum magnitude of 1.6, which minimises the need for specific measures against seismic movements in foundation design. The non-clayey substratum rules out the risk of expansivity, providing a stable environment for construction. The main constraint in this municipality lies in the proper identification of the silt-sand formations and the use of the granitic ground, aspects that a geotechnical study should specify to optimise structural safety and foundation adaptation.