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Old 04-16-2014, 10:44 AM  
Wuzzat?
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Originally Posted by nealtw View Post
What do you think is holding your post with a lump of concrete on it?
I have seen a fence blown over with a good wind, concrete and all, the soil was saturated , almost mud.
I have to think about this.
With concrete in a hole the soil is already compacted and the concrete has more surface area to grab the soil but for low fences just soil may be enough.

I'll have to look in
http://www.amazon.com/Civil-Engineer.../dp/1888577959
the next time I'm at the library.

Probably the properties of the soil, the fence height and the post hole depth are the main considerations.


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Old 04-16-2014, 11:19 AM  
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Probably the properties of the soil, the fence height and the post hole depth are the main considerations.
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Old 06-16-2014, 01:35 PM  
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I was reading now to add sand with soil around the post instead of concrete.
I'm think 4-1/2' deep with 1/2' for the 1/2 bag of concrete at the bottom, then compact around the post when plum.
The good part of this is it makes it easy to replace in the future. He says 5 years with the concrete and 10+ with the sand.
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Old 06-16-2014, 05:31 PM  
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We usually do the post so it is 1/3 in the ground so a 6' fence will have 3 ft in the ground. Sand and gravel are great fot drainage but if your soil does not drain water away it will just sit in water anyway. If you want easy change posts, concrete in 6" pipe up to ground level and drop your posts in. Before we used concrete we just smashed rocks down beside the post to hold stiff.
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Old 06-16-2014, 08:53 PM  
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Sand will not pack as tight as clay soil, but it will drain better.
I set my posts in a 5 gallon bucket filled with concrete and then dig a deep hole and set the bucket down in it. Makes it pretty stable and easier to level because all you have to do is level the bucket.
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Old 06-17-2014, 11:14 AM  
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Sand will not pack as tight as clay soil, but it will drain better.
So which resists the post tipping over better? Tight packed & viscous soil or well-drained soil?
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Old 06-18-2014, 01:05 PM  
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My experience leans (no pun intended) away from using sand. if you've ever rocked any kind of post in a sand bank, you'll know that it's pretty easy to move.


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