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- Raynesway Construction Ltd
- Contract No.
- 2 Phases / ABI TM 20M Telescopic Leader Rig
Colintraive Slipway, Isle of Bute
SPI Piling Ltd Installed steel pile tubes to form the foundations for the temporary slipway at Colintraive Ferry Terminal.
The installation was carried out to tie in with the tide levels, with a 7 to 9 hour working window to enable the piles to be installed before high tide covers the stone platform.
Installation of 20nr 610/17.5mm tubes installed in 2nr sections to form the foundations for the temporary slipway at Colintraive Ferry Terminal.
The installation will be carried out to tie in with the tide levels, it is anticipated that there will be a 7 to 9 hour working window to enable the piles to be installed before high tide covers the stone platform.
The tubes will be offloaded and pitched using a telescopic 100t crawler crane.
The 20m leader rig will install 20nr 18.3m long 610/17.5mm steel tubes. The piles will be installed from a stone platform formed at a level of 2.0mCD. The piles will be driven to a level of 3.0mOD to enable the piles to be extended.
Pile extensions will be lifted onto the installed tubes and welded in situ. The pile extensions range from 2.0m to 6.5m. The piles connection will be full penetration butt weld. Upon completion of the welding the piles will then be driven onto the rock to ensure that the required load is achieved. 4nr dynamic tests will be carried out to confirm that the pile loads have been achieved.
Upon completion of the testing the tubes will then be marked off and cut to level. The tubes on gridline 4 & 5 will be trimmed to the finished cut off level in readiness for the follow on work. Gridlines 1, 2 & 3 will be cut down at platform level with further trimming required when the stone platform is removed, these tubes will be required to be cut to final level by a diving team (this is likely to be carried out during the installation of the slipway by others)