AWARD WINNING PROJECT
GLOUCESTER STREET WATERMAIN REHABILITATION
1400 METERS OF 36" WATERMAIN - FULL STRUCTURAL RENEWAL
 
The Project
Downtown core location
75 Year old 36" watermain
City of Ottawa
 Project Team
City of Ottawa
Trenchless Design

Robinson Consultants
Cleaning & Preparation
Removing tuberculation from
old cast iron watermain
   
 Access Excavation
Entry point for one of
the 6 insertions of HDPE
Liner Going In
35 mm annulus was
grouted after liner installed
 Aquagrip Coupling
Joining HDPE liner to
Concrete Pressure Pipe

The Gloucester Street Watermain Rehabilitation won a Canadian Consulting Engineering 2000 Award of Merit. It was also chosen for presentation at the NASTT No-Dig 2000 Conference in Anaheim. This project was done jointly with Robinson Consultants Inc. of Kanata, Ontario.

The City of Ottawa estimates that replacing the aging cast iron watermain (which had suffered a catastrophic break several years earlier) would have taken 12-18 months of open cut construction in the downtown core. The trenchless renewal (150 psi stand alone test rated) took less than 4 months.

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