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CIVil $9\mathrm{.}090$

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In civil engineering, what are the primary considerations and methodologies involved in the design and construction of sustainable infrastructure projects that minimize environmental impact while maximizing economic and social benefits? Discuss the role of innovative materials and technologies in enhancing the durability and efficiency of structures, and explain how lifecycle assessment and cost analysis contribute to decision$-$making processes. Additionally, address the challenges and strategies for integrating renewable energy sources and green practices in urban development.