What type of pile driver do I need for the size and type of piles I am driving?
The standard pile driver for most projects would be the Challenger 800. The Challenger can drive wooden or steel posts.
If driving posts under 3.5 metres, a smaller machine may be suitable.
Does the ground conditions have an effect on the type of Pile Driver I should select?
Yes. If you are driving into soil, most machines will drive quickly and correctly. However if you are working in areas with harder ground condition – ie, rock or ice conditions, the hammer power of the post driver is important. The Challenger 1000 which has a hammer of 1060 joules is the ideal solution for hard conditions. An attachment such as a rock drill may be required to drill through rock, granite or concrete.
Alternatively, if soil resistance is not as anticipated, this means that piles may be driving deeper than estimated. GPS and automated laser height control are useful in these situations.
My project is of significant size, does this have an impact on the size of machine I should choose?
Yes. Think about not only the project that you are working on now, but what sort of projects are you going to be tendering on for the future? It may make economic sense to include a GPS System and a Challenger Guardrail Installer. GPS equipment ensures accuracy and reduces the requirement for rework. The Guardrail Installers reduce labour and increase productivity.
For smaller residential projects a smaller machine such as the Challenger 400 or 600 maybe more appropriate. The machines are more compact; making them easier to ship to sites and manoeuvre on site.
Why are the installed piles showing movement when new piles are driven?
In certain circumstances there maybe movement in the soil when new piles are driven. Predrilling the pile locations can help reduce ground movement.
When you make an enquiry with Groundwork, give us the details of your project, so that we can recommend the best machine for you.