Why isn't my fence staying up?

Question

I recently put up a new fence. And i have had it blow down twice in the last two months since i set it up. The concrete mix im using doesnt seem to be setting up right. The post is very loose after i set it. Also i live in KY and the ground is very rocky and a clay like material. I was wondering if it would help the concrete settle by drilling 3/8" holes in the post and putting 2' rebar in the post in the ground. Or if i should use a quick setting concrete.

Answer 1

Check to see if the 'concrete' isn't really flour.

Answer 2

Here's my common sense advice (in no particular order)

1) The one third rule... at least 1/3 of the post in the ground. 6' fence? 9' post.

2) Set the posts in fresh concrete (quick set will also work, but is not critical) without the fence hung, nail two supports per post @ 90 degrees to hold the posts plumb and allow 24 hours (or more) for the concrete to set before hanging fence panels.

3) After you set the post in wet concrete, use a 2x4 or some other stick to poke/shake the concrete to remove bubbles/voids.

4) Nails in the bottom. This sounds more painful than it actually is. Use 5 or 6 big ol' nails driven a half inch or so into the bottom of the posts (from the sides- all around the base) to give a better mechanical bond to the base.

Best of luck.

Answer 3

Dig a hole a little deeper than 3 foot. Add stones, for drainage (leaving the hole depth at 3 feet). Set the post in the hole. Secure it in a level position. Fill 1/2 full of dry concrete. Pour a bucket of water into the hole and fill the rest of the hole with dirt. Let set overnight to cure. Sounds like your posts are moving before the concrete sets.

Answer 4

here is what we used to do, just dig the hole and place the post in then The mositure from the soil will casue the concrete to properly hydrate, coNCRETE DOES NOT DRY IT, CUres. Make sure the posts are at least 3 feet deep