task $77===$What are the foundational theories that underpin civil engineering? How do these theories inform the design, construction, and maintenance of infrastructure projects such as bridges, roads, and buildings? How does material science contribute to understanding the behavior of materials under different conditions, crucial for ensuring structural integrity? Additionally, what role does fluid mechanics play in hydraulic engineering, particularly in designing efficient water supply and drainage systems? Moreover, how do principles of geotechnical engineering guide the analysis and design of foundations for structures, considering factors like soil mechanics and slope stability? Lastly, how do these theories evolve with advancements in technology and environmental awareness?