Estudio geotécnico in Oliva de la Frontera

In Oliva de la Frontera, soils formed by shales and schists predominate; they are characterised by being metamorphic materials with a laminated structure, which gives them a moderate bearing capacity, although their behaviour may be anisotropic under load. The minority presence of granite, gneiss and other igneous rocks provides localised zones of higher resistance. Also identified are reduced deposits of muds and peats of deltaic origin, which must be avoided as a support level in foundations due to their high compressibility and low bearing capacity. The low permeability of these ground conditions limits infiltration, although superficial aquifers associated with discontinuities may be found.

Seismic activity in Oliva de la Frontera is very low; only 1 event has been recorded in 30 years with a maximum magnitude of 2.7, so the seismic risk is almost negligible for structural design. The non-clayey substrate present in the area eliminates the risk of expansivity, ensuring stable conditions in the long term. In this municipality, the main geotechnical constraint for foundations is related to the correct identification and exclusion of areas with muds or peats as a bearing base, thereby guaranteeing the safety and durability of the designed structures.