Concrete Footing For Fence Post

Use the formulas above for volume.

Concrete footing for fence post.

Set the post into the form and temporarily stand straight. That little footing will give the post something to stand on instead of damp soil. Fast setting concrete is ideal for installing fence posts since it doesn t need to be mixed in a bucket or a wheelbarrow. Make sure the post is plumb before allowing the concrete to set.

You need twenty 20 4 nominal round posts. You could dig it out but that takes too long. Let s say we are installing a 6 fence. Even though the concrete hardening technically known as curing process begins quickly you should leave the posts undisturbed for at least two days after pouring the concrete.

Therefore 2 of post will be in the ground. To prevent a post from decaying too quickly as well as to make it easy to remove when it does start. Add exactly the amount of clean water instructed on the back of the packaging per bag of concrete mix and mix thoroughly remembering that excess water ruins good concrete. Double check that the post hasn t fallen out of level then let the concrete harden.

Example fence post concrete calculation. For post set extra strength or concrete mix concrete water in a non porous vessel such as a wheelbarrow add the concrete mix no more than 2 bags at a time. Once you ve finished digging your post holes add about three to four inches of gravel into the bottom and compact it using a post or a 2x4. Pour the dry mix into the tube.

Two 50 pound bags of fast setting concrete will set a 4 inch by 4 inch or a 4 inch diameter post in a 10 inch diameter hole. Typical post footings for fences decks and exterior stairs are between 18. That s because fence posts are set in a concrete footing that is usually at least two feet deep in the ground. Let s use an example to illustrate what we covered above.

Do apply caulk to each fence post after only an hour cts rapid set concrete mix will have hardened completely. Note that 4 posts are actually 3 in diameter. Place the form tube into the hole. Removing an old fence post can be a pain in the ass especially if the post has rotted and fallen off.

Concrete post footings are removed when replacing a damaged post moving posts or when trenching for underground pipes.