Geotechnical study in Chauchina

In Chauchina, deposits of fine sands and silts predominate, forming the main scenario for the bearing capacity of the local ground. These materials show variable stiffness and strength, which requires detailed laboratory analyses during the geotechnical study to determine the most suitable foundation. The occasional presence of gypsum, anhydrite and salts implies a risk of dissolution, especially in environments with groundwater, making a thorough assessment advisable before selecting the type of support. Levels with muds and peats, although infrequent, should be avoided as a foundation base owing to their low bearing capacity and high settlements. The non-clayey substrate removes the risk of expansivity in the area.

The seismicity in Chauchina is moderate, with 49 events recorded in the last 30 years and a maximum magnitude of M3.9, so it is not considered a severe constraint for structural design, but checking it in the early stages of the project is nevertheless recommended. Additionally, the possible development of karst phenomena due to the presence of limestones and dolomites, although rare, must be ruled out through boreholes and specific tests to avoid unexpected subsidence. In conclusion, the main constraint for construction in Chauchina lies in assessing the risk of gypsum dissolution and verifying karst processes, critical elements for the stability of any foundation.