Determination of the roughness and Chezy’s coefficients for calculating wastewater networks in conditions to reduce the cost of wastewate

Abstract

Determination of the roughness and Chezy’s coefficients for calculating wastewater networks in conditions to reduce the cost of wastewate

N.S. Serpokrilov , T.M. Mkrtchyan

Incoming article date: 18.11.2013

In conditions of reduction of the costs of wastewater actual value of the minimum speed and current case does not provide the required conditions of self-purification of networks. The studies conducted on the silt areas of current collectors of various diameters made of various materials with the purpose of determining the resistance of precipitation in the trays pipes.
Describes the methodology and instruments of research. The data obtained allowed with sufficient certainty have established roughness coefficient bottom sediments of sewers.   

Keywords: drainage network, the rate of self-purification, sewer, roughness, bottom sediments.