Cementation Skanska Ireland’s diaphragm wall expertise has helped win a £1.8 million (€2.8 million) contract in Dublin. This was the solution the company advised to construct foundations in highly varied glacial deposits overlying hard bedrock for a luxury mixed use development next to Smithfield Flower Market.
The diaphragm wall, 16 metres deep and 800mm thick, extends down to the bedrock and will allow excavation of a 10m deep basement using the bottom-up construction sequence. The wall is supported by two rows of temporary ground anchors, providing additional support prior to construction of the basement floor slabs.
Following excavation, Cementation Skanska Ireland will install base-slab tension piles drilled into the bedrock to withstand water uplift pressures.
The project, for developer Fusano Properties with G&T Crampton the main contractor, will be completed early next year. Engineer is White Young Green and architect is Horan Keogan Ryan.
Pat McCann, Cementation Skanska Ireland’s project director, said, “Another option was the secant method, but we considered diaphragm walling to be faster and more technically appropriate.”