Geotechnical study in Sondika

In Sondika, the predominant substratum mainly corresponds to sandstones, conglomerates and flysch, which provides a competent geotechnical basis for foundations. The occasional presence of limestones, dolomites and marbles, together with certain packages of fine sands and silts, may locally influence bearing capacity, although, in general terms, these are favourable ground conditions for supporting structures. It is important to note that the low representation of stiff clays and the scarce occurrence of anthropogenic made ground minimise the presence of problematic materials in this municipality.

Seismicity in Sondika is notable, with 94 recorded events over the last 30 years, although the maximum magnitude observed is 3.7, which indicates a moderate risk level to be taken into account in structural characterisation. No relevant karstification phenomena are evident, and the non-clayey substratum minimises the possibility of settlements due to expansivity. The most relevant constraint for the geotechnical study in Sondika is the predominance of consolidated lithologies which, combined with the notable seismicity, require a detailed analysis to ensure the structural safety of the foundations.