Geotechnical study in Vic

In the municipality of Vic, white, soft expansive clays predominate, reaching a frequency of 93,75%. These formations usually exhibit very low permeability and may function as shallow aquifers in certain contexts. Sandstones, conglomerates and flysch occur only occasionally and provide better conditions for foundations if they are found at depth. The low permeability of the materials necessitates precautions in the design of foundations, especially in the face of moisture variations, and poorly competent clays can significantly limit bearing capacity.

Seismic activity in Vic is very low, with only 1 event and a maximum magnitude of 1,5 in the period considered, which minimises seismic constraints in structural design. Since the dominant bedrock is not clayey, the risk of associated expansivity is ruled out, although the potential presence of karst must be assessed in detail before proceeding with the foundations, due to the risk of cavities or subsidence. Therefore, checking for possible karst-related phenomena is the main local geotechnical constraint.