$-----------$L: civil engineers ensure the safety and stability of structures? Explore the foundational theories guiding structural design and analysis, including principles of statics and mechanics of materials. Discuss the role of material properties, such as elasticity and strength, in determining structural integrity. What methods are employed to assess and mitigate risks associated with natural disasters like earthquakes and floods? Additionally, examine the importance of regulatory standards and quality assurance protocols in maintaining structural safety across various construction projects."