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Outhe most important formulas in civil engineering from study and practice. r selection of In Part 1, we list structural formulas that are also used by structural engineers and structural engineers in the structural analysis of buildings on a daily basis. Starting with the internal force of the bending moment, we explain what it is and how it is created. Then, we continue with the deflections and the cross-section properties that are important for the design of structural components. Finally, we