Project Summary
Coffey carried out repairs and stabilisation works to a collapsed section of the canal wall at Portland Place on the Royal Canal, Dublin. The works included the reconstruction of retaining walls, installation of sheet piling with stone cladding, reinstatement of the walkway, and underpinning of services.
Project Description
The project involved the repair of 86m of canal wall, including 21m of collapsed sections, and widening of the walkway by 500mm through the installation of sheet piles. The piles were clad in stonework with a cast in-situ concrete capping for durability. Works also included the demolition and rebuilding of a 15m high-level retaining wall, underpinning of an existing gas main, and reinstatement of the walkway surface.
Scope of Works
The works included:
- Demolition and reconstruction of a 15m retaining wall.
- Protective underpinning of existing gas main using I-section piles and lean mix concrete.
- Removal of collapsed concrete wall sections.
- Installation of sheet piling retaining wall and concrete capping.
- Masonry cladding to sheet piles with steel support angle.
- Reinstatement of walkway surfacing.
- Rebuilding of retaining wall in mass concrete, blockwork and masonry.
Technical Highlights
- 6m sheet piles installed along 86m of canal wall from a 50t pontoon with a 35t excavator and movax hammer.
- Masonry cladding (140m²) constructed on sheet piles with canal water level lowered to allow dry working.
- 500 x 300mm foundation poured for cladding along the full length of the wall.
- Construction completed in a constrained urban and waterway environment.
Added Value
- Extended lifespan of canal infrastructure.
- Improved safety and usability of the pedestrian walkway.
- Engineering solution minimised disruption to canal users and nearby residents.
- Preservation of visual character through masonry cladding.
Environmental, Safety or Community Measures
- Canal water level carefully managed to maintain stability and protect aquatic environment.
- Reinstated walkway widened for safer public access.
- Engagement with utility providers ensured protection of essential services.
- Stone cladding preserved the heritage character of the canal setting.
Planning a project that requires civil engineering expertise?
Coffey delivers technically robust, high-quality solutions across sectors — from infrastructure upgrades to specialist projects. Get in touch to discuss how we can support your next project at 091 844356 or info@coffeygroup.com.
