Contract Piling Services personnel, successfully carried out the installation of, 18no 457mm OD x 14.3mm WT x 22m long vertical piles, along with 4no 323.9mm OD x 14.3mm WT x 24 m long raking piles, through two areas of existing quay, with all piles having special re-enforced driving points welded on.
Working with John Gunn’s site team, as they had to break out the existing quay deck, to accommodate each pile position. We manufactured a “bespoke soil displacement pile” which was vibrated through the unknown backfill material, displacing boulders or obstructions on the way.
Once this had successfully been achieved down to at least 14 meters deep, the 22m long vertical pile was picked up by the 100-ton crane and moved in readiness, once the “soil displacement pile” was removed and the actual permanent working pile, was quickly inserted into the void, then gently lowered until it stopped penetrating under its own weight, normally at least 12 meters.
Before releasing the crane from the pile by disengaging the DCP quick release shackle, the piling rig c/w vibro was brought into position, so the vibro could be raised to the top of the pile, so once the crane was disengaged the piling rig could clamp onto the pile quickly and safely.
This simple but HSE friendly method, eliminated any building of cumbersome temporary gates, whilst doing away with subsequent need to be working at height.
This same method was adapted for all piles vertical and raking alike, with the only temp gates been made, for the final driving of the raking piles, at a low level to support the HPH6500 Hydraulic Hammer on the raking pile.