Trenchless Transformation

by Stephen A. Clabro, P.E., Dir.; Envir. Engrg. Group, Anderson-Nichols/Goodkind and O'Dea, Boston, MA,
Meredith R. Norton, Proj. Mgr.; Massachusetts Water Resour. Authority, Boston, MA,

Serial Information: Civil Engineering—ASCE, 2000, Vol. 70, Issue 11, Pg. 48-51

Document Type: Feature article


The Framingham Extension Sewer (FES) was constructed of reinforced-concrete pipe in the mid-1950s as part of the wastewater collection system for the greater Boston area. Age and hydrogen sulfide corrosion have caused deterioration in the pipeline over the years. As a result, the Massachusetts Water Resources Authority (MWRA) is implementing a $50-million program to rehabilitate the 9.5 km long FES. Because the pipeline passes through residential neighborhoods and other politically or environmentally sensitive areas, the MWRA chose a trenchless construction technology in which a cured-in-place liner tube is installed inside the existing pipe.

Subject Headings: Water resources | Trenchless technology | Pipes | Pipelines | Finite element method | Water pipelines | Wastewater management

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