In the heart of Bosnia and Herzegovina, a groundbreaking study led by Ekrem Bektašević from the University of Tuzla’s Faculty of Mining, Geology, and Civil Engineering is revolutionizing how we approach subsurface characterization for commercial construction. The research, published in *Facta Universitatis. Series: Architecture and Civil Engineering* (which translates to *Facts of the University. Series: Architecture and Civil Engineering*), focuses on the application of geoelectrical tomography using a Wenner electrode array to map the subsurface conditions of a planned commercial building site in Kakanj.
Bektašević and his team employed geoelectrical surveys to measure the electrical resistivity of the soil, a method that provides critical insights into the physical and mechanical properties of the subsurface. “The distribution of soil electrical resistivity allowed us to identify distinct layers, which is crucial for understanding the foundation conditions,” Bektašević explained. Most of the resistivity values recorded were below 700 Ωm, indicating the presence of saturated fine sediments and clays. However, the team detected a significant anomaly in the central part of the profile, where resistivity values exceeded 10,000 Ωm at a depth of 10–15 meters. This anomaly could suggest the presence of solid rock masses, concrete structures, or unconsolidated material.
The implications of this research are profound, particularly for the commercial construction sector. Accurate subsurface characterization is essential for designing safe and cost-effective foundations. “Our findings provide a valuable basis for foundation design, reducing the risk of unexpected geotechnical challenges,” Bektašević noted. The study highlights the importance of integrating geophysical surveys into the early stages of construction planning, ensuring that developers and engineers have a clear understanding of the subsurface conditions before breaking ground.
The research also underscores the need for supplementary investigations, such as exploratory drilling and laboratory testing, to further refine the understanding of foundation conditions. “While geoelectrical tomography offers a non-invasive and efficient method for subsurface characterization, combining it with traditional geotechnical methods can significantly enhance the accuracy of our assessments,” Bektašević added.
As the construction industry continues to evolve, the application of advanced geophysical techniques like geoelectrical tomography is likely to become increasingly prevalent. This research not only shapes future developments in foundation design but also sets a precedent for how geotechnical risks can be mitigated through innovative and integrated approaches. For commercial developers and engineers, the insights gained from this study could translate into more robust and reliable construction projects, ultimately driving progress and innovation in the field.