www.lmkeating.ie L&M Keating Ltd, Kilmihil, Building & Civil Engineering Contractors.
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Knightstown Harbour, Valentia Island
Projects > Design Build
| KNIGHTSTOWN HARBOUR, Valentia Island, Co. Kerry |
The works comprised of the design, delivery and installation of 34 No. precast concrete floating breakwater units (each 20m x 4m weighing approx. 60 tonnes), held in place by a flexible mooring system on a helical mooring system designed & developed by L&M Keating. The site location on the Southwest Coast resulted in particularly onerous environmental loading design criteria. Environmental constraints placed onerous limiting conditions on the footprint and materials for possible anchoring systems. L&M Keating researched and sourced in New Zealand existing helical anchor pile mooring systems used in sands & soft soils. The design was developed through extensive site testing by L&M Keating to adapt to coarser soil conditions. A new overwater installation system was devised by L&M Keating which reduced installation time significantly and almost eliminated dive work, thereby reducing cost and health & safety risks. The mooring and installation system further minimised disturbance of the sea bed. In total 142 anchors piles were installed complete with dyneema mooring lines. A rock armoured fixed breakwater as also constructed complete with rock armour protection and concrete access slab. The existing northern quay was refurbished in the form of a new concrete deck. Both were connected to the new floating breakwaters via 2 No. access bridges. The serviced concrete breakwater pontoons were designed using proprietary mooring analysis and Ansys 3D modelling software. The breakwaters include a highly aesthetic and hardwearing structural wave wall of Ekki hardwood. As part of this contract an RNLI berth is being provided for the Severn Class RNLI lifeboat. The berth is to be fitted to the highest standards including high level upstand fendering, lighting, GRP decking and power. |
| Client | Kerry County Council, Rathass, Tralee, Co. Kerry. |
| Architect/Engineer | RPS Consulting Engineers, Elmwood House, 74 Boucher Road, Belfast BT12 6RZ |
| Value | €6.0m |
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