Faults found in sewer pipes, causes and remedies

Abstract

In the contents of the paper, the author presents several photos extracted from footage obtained during CCTV (closed circuit television) sewer inspection activities in sewer mains. In these photos, several types of faults found in sewer pipes can be observed. After a thorough analysis of the photos and additional data obtained during inspections, the leading factors for the faults are identified. The analysis revealed that some of the faults are related to pipe material and others are due to disregard of pipe laying techniques. At the final of the paper, some remedies are suggested for the presented cases of faults.