Project at a Glance
Robinson Consultants assessed the condition of the egg shaped brick sewer, evaluated rehabilitation options and prepared the design for the lining of the sewer with grouted reinforced plastic panels.

Key features:

  • Trenchless rehabilitation of large diameter brick sewer
  • Condition assessment
  • Rehabilitation option analysis
  • Lateral lining
  • Bypass pumping
  • Traffic Control
  • WRc SRM Type II Design
Construction value:
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Barton Street Brick Sewer Rehabilitation

The Barton Street sewer is an egg shaped brick sewer located on a major arterial roadway in the downtown core of the City of Hamilton in Ontario, Canada. The trunk sewer conveys both sanitary sewage and stormwater. The trunk sewer is estimated to be at least 75 years old, and given the age of others sewers in the area, possibly exceeds 100 years old. The sewer ranges in size from 1350mm high by 900mm wide to 1650mm high by 1150mm wide.

The City of Hamilton decided to rehabilitate approximately 655m of the aging sewer which had considerable mortar loss and missing bricks resulting in significant infiltration and potential impending structural failure. There were also two sections of the pipe within the portion of the sewer to be rehabilitated that had previously collapsed and were repaired with round pipe.

The City of Hamilton retained Robinson Consultants to conduct a rehabilitation technology assessment to determine the most suitable structural rehabilitation technology for the failing sewer. Glass reinforced plastic (GRP) panel lining and Cured-in-Place pipe (CIPP) lining were both assessed as feasible rehabilitation methods.  Numerous design considerations were reviewed in relation to the two rehabilitation methods. The method selected to rehabilitate this sewer was GRP Panel Lining due to the condition and material type of the pipe as well as the bypass pumping constraints. The GRP panels were inserted through excavated pits and manholes. Grouting of the annular space was completed and services were extended into the new panel lined sewer. Due to the condition of the sewer laterals, the contract was extended to include lining of the laterals to the limits of the right-of-way.