City of Hamilton Watermain Restoration Structural Technologies

The Kenilworth Trunk Watermain in the City of Hamilton supplies approximately 50% of the potable water for the City’s 350,000 residents.

This vital infrastructure is housed within an 8-foot diameter concrete access tunnel beneath Hamilton Mountain.

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Watermain showed signs of corrosion

Installation of StrongPIPE® V-Wrap™ System

Completed restoration on horizontal pipe

Completed restoration on vertical pipe

Project Overview

Watermain provides approximately 50% of the potable water for the City
44-inch diameter steel pipe
Approximately 900-feet long pipe in total

The Kenilworth Trunk Watermain in the City of Hamilton supplies approximately 50% of the potable water for the City’s 350,000 residents. This vital infrastructure is housed within an 8-foot diameter concrete access tunnel beneath Hamilton Mountain. The watermain consists of a 44-inch diameter steel pipe that extends about 800 feet before curving into an additional 150-foot section.

Recent inspections revealed varying degrees of corrosion, with wall thickness loss ranging from 10% to 50%. To address these critical issues before the summer demand season, emergency repairs were necessary.

STRUCTURAL TECHNOLOGIES’ StrongPIPE® V-Wrap™ Structural Carbon Fiber System was selected for the repair, known for its adaptability and reliability in strengthening critical infrastructure. PULLMAN, an exclusive licensee, installed the V-Wrap™ in two phases. Phase 1 focused on the most urgent repairs, addressing areas with a wall section loss of 30% or more. Phase 2 tackled repairs for wall section losses between 10% and 30%.

The team completed repairs both circumferentially and longitudinally in the affected areas, successfully enhancing the structural integrity of this vital pipeline and extending its service life by over 50 years.