D1 Belfast Harbour
D1 Project at Belfast Harbour, the UK’s first purpose-built offshore wind logistics facility, involved the construction of a 500m-long new quay structure and deep-water berth facility and approaches. This included dredging and disposal of 600,000m³ of material and placement of 150,000T of rock armour protection for the new quay. The Contract – the largest ever undertaken in the 400-year history of Belfast Harbour - also required the development of 50 acres of hinterland. The works were completed in just over 1 year.
The quay wall was constructed over both land and water, utilising 32m-long, 1.6m diameter tubular piles in combination with 22m-long sheet piles. ByrneLooby designed the permanent anchors for the combi-wall, which consisted of rock anchors inserted into 367No 30m-long, 760mm diameter raking piles tied back to a reinforced concrete anchor beam. ByrneLooby also acted as the temporary works designer on the project and provided geotechnical advice in relation to value engineering of the heavy-duty hinterland pavement and support piling.