Assessment of hydraulic efficiency and duration of residual service life of metal water supply pipelines

Substantiation of the necessity to develop projects reconstruction non-wood metal water supply pipelines, which have been in operation for a long time, including far north regions. Development methodology estimation hydraulic efficiency and duration residual service life pipes depending on thickness actual layer deposits their inner walls. Methods. It is proposed estimate period use steel gray cast iron by value coefficient operation. Outcomes. The study allows us determine values pipeline, assembled from pipes, characterizing its We obtained formula determining ratio characteristics potential non-metal at moment evaluation these pipes. Practical Relevance. developed recommended possibility extending further worn as well predicting operating life.