Q : $85$$$85$$civil engineering serve as the foundation for understanding and advancing the discipline? Discuss the significance of theoretical frameworks in civil engineering, including their role in problem$-$solving, innovation, and the development of infrastructure. Explore how theories such as structural analysis, fluid mechanics, and geotechnical engineering inform the design, construction, and maintenance of civil infrastructure. Additionally, consider the evolution of civil engineering theories over time and their adaptation to address contemporary challenges such as sustainability, resilience, and urbanization. Finally, examine the interdisciplinary nature of civil engineering theories and their integration with other fields for comprehensive solutions.