Scheduling Renewal of Water Pipes While Considering Adjacency of Infrastructure Works and Economies of Scale

Much research effort has been dedicated to the development of optimal strategies for rehabilitation and/or replacement of water mains. Some of the methods are intended for high-level planning of groups or cohorts of pipes, while others address low-level scheduling of individual water mains. This pap...

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Bibliographic Details
Published inJournal of water resources planning and management Vol. 136; no. 5; pp. 519 - 530
Main Authors Nafi, Amir, Kleiner, Yehuda
Format Journal Article
LanguageEnglish
Published American Society of Civil Engineers 01.09.2010
Subjects
Environmental Sciences
TECHNICAL PAPERS
WATER MAINS
RENEWAL PLANNING
ECONOMIES OF SCALE
PIPES
MULTI-OBJECTIVE GENETIC ALGORITHM
ROADWORK
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Summary:Much research effort has been dedicated to the development of optimal strategies for rehabilitation and/or replacement of water mains. Some of the methods are intended for high-level planning of groups or cohorts of pipes, while others address low-level scheduling of individual water mains. This paper focuses on the latter aspect. An approach is proposed for the efficient scheduling of individual water mains for replacement in a short to medium predefined planning period and subject to various budgetary constraints. This approach also accounts for economies of scale considerations as well as harmonization with other known infrastructure works. A multiobjective genetic algorithm scheme is used as a tool to search a vast combinatorial solution space, comprising various combinations of pipe replacement schedules.
ISSN:0733-9496
1943-5452
DOI:10.1061/(ASCE)WR.1943-5452.0000062