Just wondering why you would want to mix that much concrete instead of just geting a concrete truck in to pour it.

I once did something like this (many,many years ago) and regretted ever going the bag route.

One of the key differences on Post Hole concrete is that it is faster setting than regular concrete. The stuff I got from home depot for my basketball post had a very high Psi rating (strength) of over 4000 Psi and had plenty of pea gravel in it. Some of the things that make a strong concrete wall is the Psi of the concrete and the reinforcement approach, ribar, wire ...etc. I did not hear you say what you were doing for reinforce the wall. You should check the psi rating on your bags and see whether you have stone in the mix

Dennis
TractorPoint

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