Consistent Classification System for Sewer Pipe Deterioration and Asset Management
Publication: Journal of Water Resources Planning and Management
Volume 148, Issue 5
Abstract
Sewer pipe deterioration is driven by a finite number of root causes and processes. Thus, it should be both feasible and advantageous to have a uniform classification system that can be universally applied in sewer deterioration modeling and asset management. However, a literature review of existing classification systems revealed several problems and inconsistencies, and no widely adopted system. This work proposes a uniform classification system that can be used for different purposes in the fields of gravity pipe deterioration and asset management. This paper focuses on separated sewer systems, but the proposed system can be easily adapted for combined sewer and stormwater systems. The proposed system is based on three top-level categories of failures, defects, and factors with subcategories based on functional considerations. Each category is unambiguously defined and a classification flow diagram is proposed. This work demonstrates how existing parameters can be consistently classified, discusses the interactions between different defects and failures, and illustrates the application of the proposed system to the processes causing overflow failures due to sedimentation.
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Data Availability Statement
No data, models, or code were generated or used during the study.
Acknowledgments
This research was funded in part by a grant from Ministry of Business, Innovation and Employment (MBIE) of New Zealand. Their support is gratefully acknowledged. Any opinions, findings, conclusions, or recommendations expressed in this study are those of the authors and do not necessarily reflect the views of the MBIE Innovation Partnership.
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© 2022 American Society of Civil Engineers.
History
Received: Jul 20, 2021
Accepted: Dec 29, 2021
Published online: Feb 24, 2022
Published in print: May 1, 2022
Discussion open until: Jul 24, 2022
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