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Manhole Rehab

by John J. Struzziery, P.E., Proj. Mgr.; SEA Consultants, Inc., Cambridge, MA,
Arthur A. Spruch, P.E., Asst. Proj. Mgr.; Sea Consultants, Inc., Cambridge, MA,


Serial Information: Civil Engineering—ASCE, 1997, Vol. 67, Issue 5, Pg. 62-63


Document Type: Feature article

Abstract:

Using trenchless technology, two construction crews working on the Massachusetts Water Resources Authority's Wellesley Extension Relief Sewer project rehabilitated 83 manholes of different sizes and construction in 140 working days. Engineers and contractors working on the Wellesley Extension Relief Sewer project confronted a range of sewer designs. Most manholes on the project consisted of 48-in.-diameter precast concrete, 48-in.-diameter brick, and 42 x 54 in. oval brick, all placed on cast-in-place concrete base sections. The manholes were part of the WERS rehabilitation project, which included 7.5 mi of 48-, 54- and 60-in.-diameter precast concrete pipe rehabilitated using the Insituform cured-in-place pipelining CIPP process. It also included 10 special flow structures rehabilitated using a 100% solids epoxy coating known as Aquatapoxy, manufactured by American Chemical Co., St. Louis.

Subject Headings: Rehabilitation | Project management | Precast concrete | Maintenance hole | Concrete pipes | Sewers | Water resources

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