Setting Fence Posts in Concrete

Concrete is the most secure material for setting fence posts, especially if you have sandy soil. Gravel may be okay with dense, clay-heavy soil, but in looser soil, concrete is the only thing that will truly keep your fence posts stuck in place.

How deep should a 16 foot post be in the ground?

In general, holes should be at least 3 feet deep for posts that extend 8 feet or more above ground level. Posts that extend 6 feet above ground level should have holes at least 2 1/2 feet deep.

What is the best concrete mix for fence posts?

In terms of the ratio to use for a concreting fence posts, the best mix is a mix of 1:2:4 (1 cement, 2 sand, 4 aggregate). Concrete is always best mixed using a cement mixer to ensure it’s even, but if you only need to mix a little, hand mixing is ok (see mixing concrete project above for tips on how to do this).

How many bags of concrete do I need for fence posts?

Also 1-1/2 bags per hole is about right for a 4×4 fence post. Also remember, the depth of the post hole should be one-half of the above-ground post height. (Example: For a 6′ above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground).

How long will cedar posts last in the ground?

about 15 to 20 years

Can you build a fence without sinking posts?

If you need a temporary fence or a border that you can move as needed, a quick way is to use concrete blocks. Attach a bracket to a concrete block that is heavy enough to hold the wood or other material you plan to use to build the fence. The posts can be mounted to the brackets and the fence finished from there.

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Regarding this, is 2 feet deep enough for fence posts?

The minimum depth that you should dig your fence post holes for panel sections is 2 feet. A general formula is to dig the holes one-third to one-half of the post’s aboveground height. The deeper you dig the holes, the more stability your fence has, but you must also purchase longer posts.

How do you install a 4×4 fence post?

Method 1 Setting the Post in Soil or Gravel

  1. Try this method if you have dense soil.
  2. Choose a durable fence post.
  3. Prep the wood against moisture (optional).
  4. Dig the hole.
  5. Drop gravel into the hole.
  6. Position the post in the hole.
  7. Fill the hole with tamped crushed stone or soil.
  8. Finish with a small hillock.

Should fence posts be below frost line?

All fence posts should be cemented in the ground below frost level. Check your local frost level and dig deeper by at least 6″. Posts should be centered in the hole and the posts should always have concrete under them. Always leave concrete down from grade or the ground surface 3-5″ and back fill with dirt.

Will fence posts rot in concrete?

A: Actually, your point is well taken. Simply setting the posts in concrete does create a condition that will accelerate rot in the bottom of the posts. With pressure-treated posts, the rot will be slow. Concrete should be poured around the post – no concrete under the post.

How much concrete do I need for a 4×4 fence post?

Also 1-1/2 bags per hole is about right for a 4×4 fence post. Also remember, the depth of the post hole should be one-half of the above-ground post height. (Example: For a 6′ above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground).

How much quikrete do I need for a post hole?

Remember, the depth of the post hole should be one-half of the above-ground post height. (Example: For a 6 feet above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground). The calculator will indicate the number of 50 lb. bags of QUIKRETE® Fast-Setting Concrete you need.

Consequently, how do you install a fence post without concrete?

Procedure:

  1. Find a concrete surface and lightly tamp your digging iron against it.
  2. Remove the turf and topsoil from the site of the post.
  3. Dig the hole putting the displaced earth onto the tarp.
  4. Pour 4 inches of gravel into the hole.
  5. Place the post in the hole.
  6. Add another 2 inches of gravel around the base of the post.
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Also, how much cement do I need for fence posts? Related To:

  1. The general rule of thumb when setting a post is that the depth of the post’s hole needs to be 1/3 to 1/2 of the actual above-ground height of the post.
  2. Now that you’ve determined the size of the hole you’ll need, you can use the chart below to determine how many 50-pound bags of concrete you’ll need.

Why do fence posts rot at ground level?

The main cause is the wood having prolonged exposure to moisture in soil which means fence posts decay at ground level – just above the concrete base. This means the post will still be solid below and above the damaged area. Insect infestations can also cause rotting in wooden fence posts.

How long does it take for concrete to dry for fence posts?

Typically, you can apply some weight to the posts after 4 hours, but it’s a good idea to wait at least 24 hours before resuming fence construction. Standard concrete mixes may take up to two hours to set and should cure for 24 to 48 hours before any forces are applied to the posts.

How deep does a fence post need to be in the ground?

Dig post hole so diameter of the hole is 3 times the width of the post (i.e., the hole for a 4″ wood post should be about 12 inches wide). The depth of the hole should be 1/3-1/2 the post height above ground (i.e., a 6-foot tall fence would require a hole depth of at least 2 feet).

How many bags of Postcrete do you need per post?

1 bag

How deep should steel fence posts be set?

The standard rule of thumb is to bury at least a third of the length of the fence post in the ground (half is better), but local building codes may require a minimum depth, such as 30 inches, so check with your local building authority before you start.

How long do pressure treated fence posts last?

Most treatment companies claim that when treated, most lumber will last more than 20 years. This holds true for pine and spruce, while cedar may last up to 40 years.

How big of a hole do I need for a 4×4 post?

Dig an 8″-diameter hole at least 6″ deeper than your area’s frost line for each 4×4 post, using a power auger, hand auger, or post-hole digger. A 6×6 post requires a 10″-diameter hole. Shovel a 6″ layer of gravel into the hole to provide drainage.