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How to Fill an Oversize Post Hole?

Handyman663's Avatar

Join Date: Mar 2008
Posts: 974

04-15-18, 04:00 PM   #1  
How to Fill an Oversize Post Hole?

I have removed two rotted posts and concrete plugs. I have sort of enormous holes because of the size of the concrete that I removed. Is there any good way to get the ground solid again before setting new posts in the same location? I used Sonotube several yrs ago and that post never was solid. I can dig the new post hole a little deeper than what I removed.

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XSleeper's Avatar
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Join Date: Dec 2004
Posts: 19,293

04-15-18, 04:27 PM   #2  
A post or sonotube is only as solid as the backfill in/around the hole. A mix of gravel and soil, tamped down as you backfill will generally provide good support. In unstable soils, post depth needs to be greater. Crushed limestone is also a good backfill material.

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