City Quays Hotel & Multi-Storey Car Park

Title: City Quays Hotel & Multi-Storey Car Park

Client: Gilbert Ash / Felix O Hare Ltd

Solutions: Continuous Flight Auger (CFA) Piling

Having previously successfully installed approximately 500 CFA piles for the adjacent Mariott Hotel as part of the City Quays Development by Belfast Harbour Commissioners, Quinn Piling were contracted to design and install foundation piles for the new City Quays Multi-Storey Car Park.

The works comprised the design, installation and testing of approximately 700 no. x 450mm diameter piles to depths of 27m, utilising a unique hybrid permanent steel-liner method developed by Quinn Piling to overcome the notoriously challenging soft estuarine deposits locally known as 'Belfast sleech'. In addition, due to the seaside location, the rise and ebb of the tidal waters changed the ground conditions continuously.

All Quinn Piling CFA rigs are fitted with the latest generation NDT piling computer systems which enable our CFA rig operators to monitor and accurately control all aspects of the pile construction process. As each pile is completed, the rig transmits the pile data to the 'cloud' for review and analysis by Quinn Piling engineers which enables real-time quality control. The system provides instant data on important parameters such as auger depth, auger rotations, penetration speed, rotary torque, extraction force, extraction speed, concrete pressure, concrete flow and total concrete volume pumped.


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Quinn Piling Limited is a limited company registered in Northern Ireland. Company Registration No. NI041458
Registered Office: 15 Enterprise Avenue Down Business Park 46 Belfast Road Downpatrick BT30 9UP