SmallChange
Platinum Member
- Joined
- Apr 19, 2019
- Messages
- 674
- Tractor
- New Holland WM25 with 200LC front end loader, filled R4 tires 43X16.00-20 and 25X8.50-14 (had a Kubota B6200D with dozer and R1 tires)
I've augured big holes, suspended the post in the hole with room below, and poured concrete to slightly above grade with a rounded top surface, with great results. Mine are now almost 40 years old and look fine.
It matters how you are attaching to the posts. If you are using prefabbed panels, and you need the post to be accurately placed (like an inch or better), your hole has to be big enough to not just fit the post but also provide you clearance within which you align the post. That belongs in your radius budget.
It also matters what the soil is like. If you have roots and rocks to deal with, they can put the auger off course. You also need to budget radius for that. Of course, you can also do more with hand tools to fix that, but it's labor intensive, so your choices for placing one post might be different than for placing 100.
It matters how you are attaching to the posts. If you are using prefabbed panels, and you need the post to be accurately placed (like an inch or better), your hole has to be big enough to not just fit the post but also provide you clearance within which you align the post. That belongs in your radius budget.
It also matters what the soil is like. If you have roots and rocks to deal with, they can put the auger off course. You also need to budget radius for that. Of course, you can also do more with hand tools to fix that, but it's labor intensive, so your choices for placing one post might be different than for placing 100.