Geotechnical study in El Vendrell

In El Vendrell, the dominant subsoil consists of compact gravels and sands, present throughout the entire municipality. This type of soil, with coarse grain size distribution and high density, provides a bearing capacity that is usually high and stable, which enables the execution of simple shallow foundations in most cases. The low permeability detected in the near-surface formations may favour limited drainage; however, at depth, these materials may contain significant aquifers, which is an aspect to be considered for the proper use of water resources or for controlling the groundwater table during the construction process.

With regard to natural hazards, seismicity in El Vendrell is moderate, with 30 recorded events in the last 30 years and a maximum magnitude of 2.5, which suggests low seismic hazard for structural design. There are no indications of karstification or problems associated with expansive soils in the surrounding area, which considerably reduces the geotechnical constraints. Therefore, the key characteristic to be assessed in geotechnical studies in El Vendrell will be the depth and continuity of the competent levels of compact gravels and sands, as well as control of the possible presence of aquifers during construction.