Geotechnical study in Dílar

In Dílar, the dominant geological substrate is composed mainly of slate and schist, low to moderate bearing-capacity materials, generally stable, but which may show local weakness due to fracturing. The occasional presence of fine sands, silts and carbonate materials such as limestones, dolomites and marbles introduces variations in the ground response, requiring special attention in areas where gypsum and salt levels are detected, given the possibility of dissolution processes that affect the integrity of the foundation. The geotechnical study in Dílar must carefully identify the distribution of these materials in order to avoid placing structures on units that are susceptible to consolidation or dissolution.

The region shows moderate seismicity, with 22 recorded events over 30 years and a significant maximum magnitude of 5,8, which makes it essential to incorporate this factor into the structure’s seismic design. Additionally, the possible presence of karst in the carbonate formations requires specific verification of cavities before development of the foundation, since it represents a primary constraint in localised areas. The absence of expansive clays rules out significant risks associated with expansive soils, positioning seismicity and karst-related phenomena as the main constraints that must guide the approach of the geotechnical study in Dílar.