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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).
Is 2 feet deep enough for fence posts?
2 feet is the minimum depth that you should dig your fence post holes for. To dig the holes one-third to one-half of the post’s aboveground height, is a general formula. The deeper you dig the holes, the more stability your fence has.
How deep should you bury an 8 foot post?
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.
How big of a hole do I need for a 4×4 post?
The diameter of your post hole should be three times the diameter of your post. So, if you’re planning on using a four-inch round or 4×4-inch square post, your post hole will need to be 12 inches in diameter. For a six-foot-high fence post, we would need a hole that’s 36 inches deep and 12 inches in diameter.
How deep should a fence post be underground?
Rule of Thumb Hole depth = put approximately 1/3 of the post in the hole. A 2m (6 foot) post should have up to 600mm (2 foot) in the ground.
Is 18 inches deep enough for a fence post?
The general rule of thumb when setting a post is that the depth of the post’s hole needs to be one-third to one-half of the actual above-ground height of the post. For our six-foot-high fence post, we would need a hole that’s 36 inches deep and 12 inches in diameter.
Can you put dry concrete in a post hole?
Fast-setting concrete is ideal for setting posts because there’s no mixing—you simply pour the dry concrete from the bag right into the hole, then add water.
Should wooden fence posts be set in concrete?
Concrete provides a strong foundation for wooden fence posts, but can rot them more quickly. Setting them in dirt, with or without gravel or crushed rock depending on your soil type, can help the posts last longer before going rotten. You can also use metal fence post anchors to prolong their life.
How do you dig a 6-foot post hole?
How to Dig a Hole: Pro Tips Step 1: String your line and pound the stakes. Step 2: Carve out a soil divot with a spade. Step 3: Loosen earth with a tile shovel. Step 4: Use your clamshell digger. Step 5: Use a reciprocating saw on large roots. Step 6: Dislodge rocks with a digging bar. Step 7: Tamp the soil with the other end.
How shallow can a fence post be?
For any type of fence, the depth of the hole you must dig depends on how tall the post will be above ground. You should always bury one-third of your fence post underground. For a 6-foot fence, for example, you need a 9-foot post, so that 3 feet can be underground.
How long will a treated 4×4 post last in the ground?
How Long Will A Treated 4×4 Last In The Ground? (Explained) A treated 4×4 will last 20 to 25 years in the ground if the conditions in the soil and climate are favorable. That number could increase to 40 to 75 years if you install the treated 4×4 in a cement ring rather than the soil.
How deep should a 5ft fence post be?
Lawsons experts recommend you should dig a hole which has a depth of 2 ft (24 in / 600mm) to ensure you have a stable timber or concrete fence post.
How many bags of concrete do I need for a 4×4 post?
A six foot high fence post with a 4 inch post would need a hole that’s 36 inches deep by 12 inches in diameter. To fill a hole this size takes 5 bags of 80lb concrete, but remember, you have to subtract the volume of the post your burying.How Much Concrete For A 4×4 Fence Post? Depth 50 Lb Bags 24″30″ 4 32″36″ 5.
What size post do you use for an 8 foot fence?
A common rule of thumb, is to dig the hole 3 times as large as the post, and to a depth of 1/3-1/2 of the post height above ground. so for a 8′ high fence, using 4×4 posts. dig the holes 12″ in diameter, to a depth of 2 1/2 – 4′. Of course, that’s assuming you’re setting the posts in concrete.
How much concrete do I need for a post hole?
A: Finding the right amount of concrete depends on the size of the hole and the size of the post. The diameter of the hole should equal about three times the diameter of the post and the depth of the hole should be about ⅓ to ½ the total length of the pole.
How many bags of Postcrete do you need per post?
“Usually one bag of postcrete per post is enough, however you can use a two bags per post if you feel this is needed.
How deep should you dig the holes for 1.8 m wooden fence posts?
Hole Sizes for Fence Posts and Other Types of Posts Post size Height of post above ground Hole size (width x depth) 1.2m (4′) 23cm (9”) x 40cm (18”) 1.8m (6′) 23cm (9”) x 60cm (24”) 100mm (4”) 90cm (3′) 30cm (12”) x 30cm (12”) 1.2m (4′) 30cm (12”) x 45cm (18”).
