Geotechnical study in Yecla

In Yecla, the predominant soils are fine sands, silts and carbonate formations such as limestones, dolomites and marbles, followed in smaller proportions by sandstones and conglomerates. These lithologies typically provide good bearing capacity, especially in carbonated rock and compacted gravels, which favours the execution of shallow (direct) foundations except in specific areas with gypsum or salts, where dissolution risks must be assessed. The low surface permeability limits water circulation but may host deep aquifers, which is important for deep foundations and works involving significant excavation.

Seismicity in Yecla is moderate, with 49 events recorded over the last 30 years, although the maximum magnitude (Mmax 3.6) does not require strict seismic considerations in structural design. Attention must be paid to the possible development of karstification in carbonate materials, since the presence of karst must be verified before carrying out foundations to avoid sinkholes or irregular settlement. The absence of a clay substrate rules out the risk of expansivity. The main constraint in this context is determined by verifying karst in carbonate formations.