An Evaluation of Condition Assessment Protocols for Sewer Management

  1. (PDF, 457 KB)
DOIResolve DOI:
AuthorSearch for: ; Search for:
TypeTechnical Report
Series titleClient Report (National Research Council Canada. Institute for Research in Construction); no. B-5123.6
Physical description30 p.
Subjectcondition assessment, protocol, WRc, defect coding, condition grade, criticality and sewer management; Sewers
AbstractThis paper reviews various aspects of a condition assessment protocol developed by the Water Research Centre (WRc) and compares this protocol with guidelines developed by the National Research Council of Canada (NRC) and others used by Canadian municipalities and utilities. The report also discusses survey results from a number of municipal organizations, outlining the present condition of existing infrastructure, usages of condition assessment protocols, and costs for upgrading the ageing municipal infrastructure. A detailed comparison of defect coding systems, the assigned ?deduct? values for various types of defects, and condition grading systems for the different protocols are discussed. The report also compares maintenance priority rankings based on criticality and consequence of failure. An overall picture of inconsistencies in the field of sewer condition assessment has been drawn and the report stresses the need for an integrated, consistent condition assessment protocol for the prioritization of sewer repair and renewal.
Publication date
PublisherNational Research Council Canada
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC numberNRC-IRC-17232
NPARC number20377409
Export citationExport as RIS
Report a correctionReport a correction
Record identifier93ed3e91-be5e-452d-b79d-c20d4ac77002
Record created2012-07-24
Record modified2017-06-05
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)