$41$ : $\_\_\_\_\_\_\_\_\_\_\_\_\_\_**"$What are the fundamental principles of structural engineering, and how do they influence the design and construction of buildings and infrastructure? Discuss the concepts of load$-$bearing, material properties, and structural analysis methods. Explore how factors like forces, stresses, and strains affect the stability and safety of civil structures. Additionally, explain the importance of considering environmental factors and codes$/$regulations in the design process. Provide examples to illustrate these principles in practical civil engineering scenarios."$**$