Hi,
I am heading into a larger project, which at some point will require drilling for deck piles at approx 4.7m depth at 400mm diameter. Why they are that deep is not the subject of the post - but I had discussions with various earth moving companies and they have very different views on the digger size required for such task. One says a 5T will do it, others want to bring a 30T digger on site!
I saw a 30T digger at a petrol station nearby which gets the underground tanks replaced - and let me tell you - that machine looks huge! I really do not want that on the driveway (especially on a shared driveway)...
Is there any way to get access to this sort of info? How is a digger size selected based on hole diameter and depth? I will not start to argue with the contractors but I want o get some confidence in the solutions they propose. Of course they all exclude any responsibility for concrete surfaces (or any damage to the property whatsoever).
Thank you.