Erosion, corner posts on a slope repair???

[AchingBack]

Here is an idea I saw at a place near me where the ground is too rocky to dig post holes - posts are set into 55 gallon drums filled with rock. The drums are sitting on top of the ground.

A cable or heavy wire can then be attached to the top of the post, and anchored to the ground. An alternative to using the drum is a rock filled gabion basket. https://www.gabion1.com/

 

[JPRambo]

Maybe a sheet of plywood and some screws/nails to make a square sonotube.

 

[jfh28]

the reason for getting into virgin ground (not resting on it but dug into it) is because virgin ground is compacted solid so the post will not be able to move side to side after its encased in the hole with concrete......this is just a fence so there's no real downward load on it.......its all side to side motion and short of getting a compactor in there and compacting the fill to 95% that post will wind up moving again.......if you don't have the time to do it right now then I might suggest moving that corner post in and turn that corner into an angle.....your ring looks big enough to lose a little bit of corner and this way you would be digging down and setting the post into better compacted soil....then when you have the time drill down where the original post location is and set the post.......you should also get more dirt in to extend the slope around that corner too as what you really have there is a retaining wall condition and more dirt will help alleviate the stress at the corner....a 60 degree slope isn't providing any lateral strength....and step one is correct the drainage of the ring or all that you are doing now will happen again.......Jack

 

[EddieWalker]

What is the sonotube supposed to accomplish? Making the post heavier will not make it stronger. I like sonotubes for bringing concrete above grade, but putting it in the hole and expecting fill dirt around it to hold it in place isn't realistic. You will never get the fill dirt to compact anywhere near what virgin soil is, or what concrete will accomplish when poured in the hole, regardless of how big the hole is.

Another thought. Can you get a cement truck there? At $125 a yard, where does it make sense to buy rock, sonotubes, and whatever other materials that you might use to get the same results? Here in Tyler, I can have a regular cement truck with a 4 yard minimum for $100 a yard, or I can buy it by the yard at $125 with no minimum from a company that mixes is as it pours.

But again, my first choice would be to dig down until you hit virgin soil, then drill into it 4 four feet. McCoys has 20 foot posts for $66. I have two of them for my zip line platform, and they are super heavy, but my loader lifted them easily enough.

Shop 2' X 5" Top Treated Post at McCoy's

 

[drssg]

Well I do have it set up to drain better which will help a lot in the future, but I need to get my fence up ASAP because I need my arena for lessons.

You need a fence to give lessons? It seems easier to just leave the fence down. It's more maintenance all the way around.

I've had good luck using washed 1" stone for minor erosion issues. It will drain well, but it's big enough to not wash away.