How deep should i dig the hole to set post for a wooden fence?
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Two feet should be plenty. Be sure to use treated wood or you'll be replacing it every year or so. Use concrete in the hole after you seat the post, and use your level to check plumb.
It depends on how high your fence will be, what type of fence it will be and how it will be anchored in the ground. If it's a solid wood surface (and will need to stand up to the forces of strong winds), you will need to go much deeper or anchor the posts in concrete. If you're talking about a standard ~3 ft. high split rail fence, recessing the post a foot into the ground should be sufficiently sturdy.
25% OF THE LENGHT
At least 2 feet and as much as 4 feet. You want to make sure you're below the frost-line or the post will be pushed up. You also want to make sure it's down far enough to withstand the load put on it.
If you don't want to go through the trouble of pouring cement piling, at least make sure there is a few inches of gravel on the bottom and up to 3/4 - 7/8's of the length from the base to the top, with dirt fill over that at a slight slope from the post outward to assist proper drainage.
Minimum of 2 feet. If the fence is going to be solid, you need to consider wind pushing on it. I always go 3 feet and use concrete in the hole.
Put the post down 4',no matter the height of post. BUT!!! before you do call diggers hotline .
Between 2-3 feet. Don't use cement, it will cause things to start rotting earlier. Use pea gravel instead. Pea gravel is somewhat fluid. In the dry weather, it will follow the earth as it receded from the post and in the wet weather, it will move to tighten the post that way also. Fill the hole up to about 4 inches from the top and top off with soil.
Check the building code for your area first and then follow the suggestion of Bill P.
check your areas building code, i think its usually 1/4 of the toltal lengh of your post, make sure u use treated timber, concreate is always the best answer just remeber to brace your posts plumb before u pour them but u always have time to play with them before the concreate goes off
18 inches is sufficient with a fence no taller than 6 feet for the line posts but all corner posts and posts that may hold a gate will need to be atleast 24 inches...
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