AWWA ACE68984

This poster paper presents a water main replacement project that included the following: existing 16-Ø/12-Ø steel water main attached to Springfield Avenue, Springfield, Union County, New Jersey; steel water main and pipe supports in need of replacement; New Jersey Department of Transportation (NJDOT) Interstate Route 78 Local/Express to be partially closed in phases (opportunity to do replacement work); maintaining water supply and schedule critical during work; investigated alternatives for water main materials; and, construction in three phases. Project complication involved the following: leaking valve (Phase III test but not I/II); space for work (2 contractors); dissimilar metals (galvanic action) between jacket and pipe supports (jacket should corrode first, easier to replace); regularly changing schedule (highway contractor has incentive to finish early); existing support rod Ø changed each phase; and, pipe support spacing. Presentation summary includes the following: water main replaced on a changing schedule with ductile iron pipe and steel pipe; victaulic © Style 31 and Depend-o- Lok Couplings, flanged joints at valves and fittings; protected piping system; and, communication important.