Geotechnical study in Paradela

In Paradela, a substratum of slates and schists predominates, which gives the area geotechnical characteristics associated with low to medium bearing-capacity metamorphic materials, prone to fracturing but coherent in most foundation situations. Granite and gneiss formations appear occasionally, locally contributing to better bearing conditions. The scarcity of silts or peats implies fewer problems of compressibility and stability, although the generally low permeability of these materials may limit the discharge of water on site, an aspect to consider during excavation and foundation phases.

Seismic activity in Paradela lies within a moderate range, with 12 recorded events over 30 years and a maximum event magnitude of 4.4, meaning the seismic risk remains under control and does not constitute a relevant structural constraint. There are no signs of karstification or risks associated with expansive soils, since the non-clayey substratum rules out volumetric movements of this type. The main geotechnical constraint in the area is the impermeable nature of the rock, which must guide the selection of drainage and foundation systems adapted to local hydrogeological behaviour.