Bolands Quay is one of the largest urban regeneration projects to be undertaken in Dublin city centre in recent years, with the site positioned at the centre of Dublin’s thriving docklands, fronting Grand Canal Dock. The new development will include three landmark buildings rising to heights of up to 53m, with over 19,500 sq. m of commercial space to be constructed. The entire development has recently been acquired by Google. The basement construction works have been undertaken by PJ Edwards & Co. Ltd., with BAM Building responsible for the main building works.
ByrneLooby prepared the design and detailing of the secant pile retaining wall, along with the design of the temporary propping and tie-back anchors to restrain the pile wall at high level. The secant wall solution consisted of 640mm diameter rock socketed piles installed to a depth of 16m below ground level to facilitate the basement excavation. ByrneLooby interfaced with several stakeholders, obtaining approvals for value engineering proposals linked to the basement and foundation solutions and adopted for the development.
Setting The Standard
The Bolands Quay works commenced following a policy change by Dublin City Council prohibiting the use of traditional steel tie back anchors beneath public streets. ByrneLooby worked with Dublin City Council and the contractors to obtain approval for the use of Glass Fibre Reinforced Polymer (GFRP) tie back anchors to restrain the pile wall along Barrow Street. This was one of the first sites to obtain this approval, setting precedence for the use of this solution across the city.