Shortlining is one of the cheapest trenchless techniques of sewage pipelines rehabilitation, traditionally chosen when carried out hydraulic analysis proves that the actual amount of sewage is fewer to what the conduits had originally been planned for. When the flow of sewage is low and the canals are not quite full, its energy drops and the conduits lack the ability of self-cleaning. At the same time, the probability of sedimentation rises. Shortlining helps to reduce the renovation and exploitation costs during the sewage network construction and in the future.
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