Condition assessment and rehabilitation of access holes

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ConferenceInfra 2002 Proceedings - Mapping Out Best Practices in Urban Infrastructure: 25 November 2002, Montreal, Quebec
Pages120; # of pages: 20
Subjectinfrastructure, sewer, rehabilitation, condtiion assessment; Manholes
AbstractIt is important that the condition of access hole structures in a sewer collection network be known and maintained because these structures provide access to the sewer pipes for regular maintenance, condition assessment and rehabilitation. Costs of the maintenance and rehabilitation of sewer pipes would increase significantly if admittance to sewers via the access hole were restricted. To date much attention has been focused towards developing cost effective strategies for condition assessment, maintenance, rehabilitationand renewal of sewers, but little attention on access holes. This paper will present a unique decision-making approach to assess the condition and planning of rehabilitation for access holes. Some of the unique concepts of the approach include an impact assessment for access holes, a defect coding system that includes unique structural and service defects found in access holes, a decision-making process that allowsusers to determine whether rehabilitation or another condition assessment is required immediately, within the next couple of years or not at all and a compilation of various rehabilitation techniques and their costs. A case study is used to solidify each component of the approach. This decision-making approach to assess the condition and planning of rehabilitation of access holes is currently being considered for inclusion in the National Guide to Sustainable Municipal Infrastructure.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number46117
NPARC number20378747
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Record identifier024249b2-a4b3-4f42-a8be-3dd130ccc49a
Record created2012-07-24
Record modified2016-05-09
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