Estudio geotécnico in Barbastro

In Barbastro, the predominant subsoil is composed of sandstones, conglomerates and flysch, accompanied by frequent levels of gravel and compacted sands. The occasional presence of gypsum, anhydrite and salts introduces the potential for dissolution processes, an aspect that is relevant for the durability of foundations. The formations exhibit low permeability, although deep aquifers may exist and should be considered in the geotechnical study. In general terms, bearing capacity is favourable for the gravel, compacted sands and sandstone rocks, but it is essential to verify the homogeneity and strength of the materials in order to select the most suitable foundation type.

Seismicity in Barbastro is very low, with only 2 events in the last 30 years and a maximum magnitude of 1.7, so it does not constitute a relevant structural constraint. However, the surrounding environment presents a risk of karstification, mainly associated with the presence of gypsum and salts; this phenomenon must be carefully assessed through boreholes and specific tests before defining any foundation solution. The non-clayey subsoil rules out expansivity problems, so the main focus should be on identifying and controlling the risk of karstification and the dissolution of gypsum—key aspects for the safety and feasibility of construction projects in this area.