Trenchless Track Record

by Larry O'Keefe, Utilities Services Mgr.; Envirn. Services Dept. of the Regional Municipality of Ottawa-Carleton, Canada,
Martin Philips, Proj. Engr.; Envir. Services Dept. of the Regional Municipality of Ottata-Carleton, Canada,

Serial Information: Civil Engineering—ASCE, 1993, Vol. 63, Issue 9, Pg. 59-61

Document Type: Feature article


Ottawa is a leading user of trenchless technology for sewer rehabilitation projects. The municipality has nearly a decade's worth of experience with at least nine different no-dig techniques. For easy access to data, Ottawa has organized information on the various methods in catalog form. The catalog outlines materials, construction and installation methodology, advantages, disadvantages and limitations of the various rehabilitation strategies. The catalog is the result of meetings and interviews with manufacturers and contractors, and knowledge gained through regional and local projects. Most of the methods described in the catalog can be applied to sewer pipe of all sizes; the emphasis is on the critical design and construction factors from previous projects. The information is used in a strategy model for reviewing projects and determining the most appropriate and effective rehab methods.

Subject Headings: Rehabilitation | Trenchless technology | Sewers | Construction materials | Local government | Contractors and subcontractors | Pipelines | Hydraulic models

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