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Abstract
In this work, we carried out a comparative analysis of empirical dependences (A. Chézy and N.F. Fe-dorov formulas) for the hydraulic calculation of wastewater gravity flow networks. Using these formulas on a specific example, the hydraulic slope of a gravity pipeline was calculated and the error in the val-ues of the actual hydraulic potential characteristics of the pipes was determined. The data obtained showed that calculations using the Chézy formula ensure the highest accuracy. The A. Chézy formula was revised by introducing the concept of reduced pipe inner diameter. The dependency graph i = f (dpr) was plotted, indicating that the revised version of the A. Chézy formula gives more accurate re-sults than the classical one. The revised A. Chézy formula is recommended for the hydraulic calcula-tion of wastewater gravity flow networks. We proposed developing calculation tables for the hydraulic calculation of wastewater drainage flow networks with internal deposits.
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