Document Detail

Selective inspection planning with ageing forecast for sewer types.
MedLine Citation:
PMID:  12381016     Owner:  NLM     Status:  MEDLINE    
Investments in sewer rehabilitation must be based on inspection and evaluation of sewer conditions with respect to the severity of sewer damage and to environmental risks. This paper deals with the problems of forecasting the condition of sewers in a network from a small sample of inspected sewers. Transition functions from one into the next poorer condition class, which were empirically derived from this sample, are used to forecast the condition of sewers. By the same procedure, transition functions were subsequently calibrated for sub-samples of different types of sewers. With these transition functions, the most probable date of entering a critical condition class can be forecast from sewer characteristics, such as material, period of construction, location, use for waste and/or storm water, profile, diameter and gradient. Results are shown for the estimates about the actual condition of the Dresden sewer network and its deterioration in case of doing nothing about it. A procedure is proposed for scheduling the inspection dates for sewers which have not yet been inspected and for those which have been inspected before.
R Baur; R Herz
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Water science and technology : a journal of the International Association on Water Pollution Research     Volume:  46     ISSN:  0273-1223     ISO Abbreviation:  Water Sci. Technol.     Publication Date:  2002  
Date Detail:
Created Date:  2002-10-16     Completed Date:  2003-02-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9879497     Medline TA:  Water Sci Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  389-96     Citation Subset:  IM    
Technische Universität Dresden, Fakultät Bauingenieurwesen, Lehrstuhl Stadtbauwesen, Dresden, Germany.
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MeSH Terms
Environmental Monitoring
Equipment Failure
Facility Design and Construction*
Waste Disposal, Fluid / instrumentation*
Water Movements

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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