Estudio geotécnico in Monzón

In Monzón, the dominant geotechnical subsoil is formed by sandstones, conglomerates and flysch, covering approximately 48% of the municipal area, which favours good bearing capacity and allows direct foundations in most interventions. However, in areas where gravels, compact sands, or beds of fine sands and silts crop out, it is necessary to assess the specific shear strength and compaction, as these materials may vary their behaviour under load. It is relevant to note the occasional presence of gypsum, anhydrite and salts, which entails a risk of dissolution that may affect the stability of foundations, especially under conditions involving the flow of groundwater.

The seismicity in Monzón is classified as very low, with seismic activity of just 2 events every 30 years and a maximum recorded magnitude of 3.1, so it does not constitute a relevant constraint for structural design. However, due to the possibility of karstic developments in the subsoil, it is essential to rule out the presence of cavities and dissolution processes before founding, especially in sectors with gypsum and salts. Expansive clays only appear in a subordinate manner, so the risk of expansivity is low compared with other areas. The main geotechnical constraint in Monzón will be verification of the risk of karstification and specific review of soils with possible salt or gypsum content.