Civil engineering encompasses a vast array of subjects, from structural analysis to transportation planning. In formulating a theory base for civil engineering, one could explore foundational principles like Newton's laws of motion applied to structural mechanics, fluid dynamics for hydraulic engineering, and soil mechanics for foundation design. Additionally, theories such as traffic flow models aid in urban planning, while environmental theories inform sustainable infrastructure development. Theoretical frameworks also include risk analysis for infrastructure resilience and optimization theories for resource allocation. By integrating these theories, civil engineers can design, analyze, and maintain infrastructure that meets societal needs efficiently and sustainably.