Appendix 3: Explanation of different drilling/piling rig ...
2019-12-5u2002·u2002Appendix 3: Explanation of different drilling/piling rig uses and specific issues Drill rigs are characterised by high speed rotation of the drill string and drilled holes are rarely greater than 300mm but can be up to 600mm diameter. Piling rigs work at slower speed and 300 to 1200mm diameter piles are the most common range but can be up to ...
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