DIY Garden fencing job query about Concrete Post fitting

[Fabo]

I'm digging a hole in a corner for a concrete fence post 8ft, the corner is not 90 degrees, more like 110 degrees, I want to build on both sides with gravel boards coming off.

My idea now is to fix two concrete posts in the same hole to sort the angle,

My question is, is this possible if I dig enough coverage and use enough postcrete or concrete for the job?

Another question is: Can I even use 3 in total so the third one can be right in the corner with the other 2 leaning against the main one, however all in the same dug up hole and then concreted?

Thank you

 

[Wayners]

To answer.. Yes.

Trick is to not dig out more than necessary otherwise you need loads of concrete.
Dig deep enough to hit solid ground. Not deeper than necessary again.
One bag of postcrete per post.
Maybe 2 bags for your 3 posts

 

[Tigercubrider]

As above.
Use a post hole spade.
I hired one first, next time I bought one as it worked out cheaper.

They allow a deep hole to be dug narrow, so that the existing ground remains solid.
25% of post in the hole.

 

[Fabo]

Thank you so much for the swift replies