Estudio geotécnico in Alcolea de Cinca

In Alcolea de Cinca, a substrate composed mainly of sandstones, conglomerates and flysch predominates, representing more than 70% of the surface area. These materials usually exhibit good load-bearing capacity and allow direct foundations in most cases, except where there is localised presence of loose or altered layers. To a lesser extent, fine sands, silts and some compact gravels are found; these materials require specific verification of compaction and settlement. The general low permeability of these soils reduces the risks associated with water movements, although aquifers may exist at depth and it is advisable to study them in the design phase.

Seismicity in Alcolea de Cinca is high, with 200 recorded events over 30 years and a moderate maximum magnitude (Mmax 4.8), which means seismic actions must be considered in the structural design calculations for any building or infrastructure. There is no karst risk or problems associated with expansivity, as the substrate is not clayey. Consequently, the main geotechnical consideration for this municipality is compliance with the requirements for anti-seismic design and the appropriate local characterisation of the ground in order to refine the selection of foundation type.