Julius Nyerere International Airport Terminal 3 project aimed to demonstrate innovation in earthing and lightning protection design through advanced 3D modelling techniques. The project was carried out in collaboration with BAM International, a leading construction company renowned for its commitment to cutting-edge design and sustainable practices. The primary goal was to optimise material usage while ensuring efficient earthing and lightning protection for the new proposed terminal.
A critical foundational step involved supervising soil resistivity measurements at various locations on the site, following BS EN 7430:2011 standards. This study was essential for accurate earthing design and also provided valuable data for the lightning protection component.
The existing infrastructure’s visual/non-intrusive condition assessment was performed to understand the current earthing and lightning protection arrangements. This assessment helped identify potential risk areas and gaps that needed to be addressed during the design phase.
Using CDEGS (Current Distribution, Electromagnetic Fields, Grounding, and Soil Structure Analysis) software, the project team modelled the existing arrangements to identify any risk areas or deficiencies. The modelling allowed a comprehensive view of the site, enabling precise earthing design.
Based on IEC-based standards such as BS EN 50522, BS 7430, EA TS 41-24, and local regulations, the team developed a scheme for the new proposed terminal’s earthing system. The design documentation, safety calculations, and drawings were provided, adhering to international best practices.
The earthing system was classified according to EA Engineering Recommendation S36, and the findings were adapted to meet international standards, ensuring global compatibility and conformity.
