This theme, “Beyond Structural Engineering in a Changing World,” was vividly illustrated at the recent IABSE Congress held in San José, Costa Rica, where professionals from various backgrounds gathered to explore the evolution of the discipline.
Among the experts was Sachin Ravjee, Zutari Associate Bridge Design Engineer and a University of Pretoria (UP) PhD candidate who presented his research on Senqu Bridge as part of the Polihali Major Bridges project for the Lesotho Highlands Development Authority.
Sachin Ravjee stood on the world stage of the IABSE Congress as the only African to present his paper on structural health monitoring, representing Zutari and the continent at large. Though daunting, Sachin highlights that the experience filled him with pride. “It felt good to stand up there and talk about our project and the work we do,” he expressed. “I was proud to represent Zutari, the University of Pretoria, South Africa, and the African continent as a whole.”
The congress theme significantly influenced Sachin’s approach to his presentation. It challenged him to consider not only the technical aspects of structural engineering but also the broader implications of his work and environment. “It wasn’t just about the numbers and technical specifications,” he elaborated. “It was about how our projects can adapt to the changing needs of society and the environment, aligning with sustainable practices and modern challenges.” This interdisciplinary outlook is essential in today’s context, where engineers must consider social factors, sustainability, and technological advancements that influence their designs.
The Significance of Senqu Bridge
Sachin’s paper, titled “Structural Health Monitoring of an Incrementally Launched Extradosed Stay Cable Bridge,” delves into the technicalities and importance of this innovative approach, which reflects the congress’ overarching theme of taking structural engineering beyond its traditional confines.
Senqu Bridge, the largest in Phase II of the Lesotho Highlands Water Project, is notable not only for its scale but also for its design and technological advancements. Spanning 825 meters, this extra-dosed stay cable bridge represents a significant leap in bridge design and construction, incorporating advanced structural health monitoring (SHM) systems to ensure optimal performance during and after construction. By leveraging innovative technologies, the project aims to enhance safety and longevity while minimising maintenance costs over time.
In addition to its engineering sophistication, the Polihali Major Bridges project plays a crucial role in Lesotho’s socio-economic landscape. It not only aims to improve water supply but also seeks to create jobs and stimulate local economies through infrastructural development. The collaboration among regional and international teams enriches this project, resulting in a diverse exchange of knowledge and experience. By working alongside seasoned professionals, engineers involved in the project can absorb invaluable insights into complex design challenges, fostering a rich learning environment.
The challenges faced during the construction of Senqu Bridge reflect the project’s scale and complexity. Engineers must navigate various technical hurdles, from managing intricate designs to ensuring that construction practices adhere to the highest standards of safety and efficiency. Such challenges not only reinforce the significance of robust teamwork but also illustrate the project’s potential to become a benchmark in engineering excellence in the region. As this project unfolds, it highlights the importance of sustainable engineering practices in tackling contemporary issues related to climate, economy, and society.
Sachin’s journey in the engineering field began with a foundational education in civil engineering at the University of Pretoria, where he completed both his undergraduate and master’s degrees. He joined Zutari in 2018 as part of the bridges team, allowing him to cultivate invaluable hands-on experience in large-scale projects. Working on the Polihali Major Bridges project has not only shaped his career but also enriched his professional growth through collaboration with skilled individuals from diverse disciplines.
“Working with people from different backgrounds has allowed me to soak up their knowledge and experience,” Sachin notes. This fusion of ideas and expertise is crucial in addressing the complexities inherent in modern engineering projects.
The future of structural engineering
The IABSE (International Associate for Bridge and Structural Engineering) Congress took place in San José, Costa Rica. This picturesque backdrop hosted over 300 delegates from around the world, highlighting the importance of sharing knowledge and experience across different cultures and expertise. Events such as this play a crucial role in fostering discussions around innovative practices, collaboration, and the integration of technology as the field of structural engineering evolves.
Sachin Ravjee’s contributions, particularly regarding Senqu Bridge and its SHM system, exemplify the shifting paradigm in engineering, where the focus extends beyond pure technical skills to encompass a holistic approach towards infrastructure development.
The experiences and insights gained at the congress enrich professionals like Sachin, propelling the field forward as engineers strive to meet the demands of a changing world. As they break down traditional boundaries and embrace interdisciplinary collaboration, the future of structural engineering looks promising, paving the way for sustainable and innovative solutions that benefit society as a whole.