Geotechnical study in Meliana

In Meliana, soils of compacted gravels and sands predominate, accounting for more than 80% of the substrate, which provides excellent bearing capacity and facilitates the execution of shallow (direct) foundations. White or soft expansive clays are identified only occasionally, so the incidence of problems associated with expansivity is low and localised. The high permeability of the extensive and productive aquifers can influence drainage favourably, although the groundwater level must be monitored during foundation design.

Seismic activity in Meliana is very low, with only 2 recorded events in 30 years and a maximum magnitude of 2.6, so seismicity does not represent a relevant constraint for structural design. As the substrate is non-clayey, the risk of expansivity is virtually ruled out. In conclusion, the main geotechnical factor to consider in Meliana is the suitability of the granular ground for foundation, paying attention only locally to areas with soft clays in order to avoid differential settlements.