Greystones Marina

PROJECT

The civil and marine package comprises approximately 80,000 m ³ of dredging; 200,000 m ³ of reclamation; 180,000t of rock armour up to 10t individual weight; 250,000t of rockfill; 54,000t of beach shingle; 115,000 m ³ of concrete and 2,500 linear metres of driven plate steel piles.

The project involved most aspects of marine civil engineering including dredging, reclamation, beach nourishment, rock armour, concrete armour, marine piling, underwater stone screening, extensive diving operations, seawalls, coastal revetments, breakwaters and slipways all of which are designed to function at all states of the tide. The breakwaters are designed for a 1 in 2000 year storm event.

The construction process was complicated by the planning requirement to maintain availability of existing harbour facilities to local clubs and the general public throughout the construction period.

Part of the project contains the remains of an old disused Wicklow County Council landfill. Significant project works included landfill remediation involving the removal of approximately 9,000 m ³ of existing landfill material and sealing of the landfill cell using a bespoke geo-synthetic lining system and spreading of cell capping material and landscaping and seeding to form part of a public park. Further works included coastal protection works to eliminate further coastal erosion along the boundary of the old dump location.

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