$511$ ; $554$ : $5$ : structural engineering contribute to the safety and stability of buildings and bridges? Explore the fundamental concepts of structural analysis, including stress, strain, and deformation, and their application in designing load$-$bearing structures. Discuss the importance of material selection and structural design codes in ensuring resilience against various loads such as gravity, wind, and seismic forces. How do engineers balance factors like cost, aesthetics, and environmental impact in creating durable and functional structures that meet societal needs?"