Estudio geotécnico in Oímbra

In the municipality of Oímbra, substrata of sandstones, conglomerates and flysch predominate, together accounting for close to 75% of the soils present. These materials usually exhibit good bearing capacity, although the flysch may show local variability due to the alternation of layers. Fine sands and silts, as well as areas with slates and schists, occur occasionally and may reduce stability if they are encountered as a bearing level. Given the generally low permeability, the possible rise of water in surface areas should be considered and its implications for the foundation’s characteristics.

Seismic activity is very low, with only 9 events over 30 years and a low maximum magnitude (2.6), so it does not represent a relevant structural consideration. There is no risk of karstification or significant expansiveness, since the substratum is not clayey. Thus, the main geotechnical constraint in Oímbra will be the local heterogeneity of layers; the levels of conglomerates, flysch and the possible accumulation of superficial aquifers should therefore be appropriately assessed in order to correctly select the type of foundation.