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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 an 8 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.
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.
What size hole is needed for 4×4 fence 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.
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. So, a six-foot-high finished post ideally needs to be buried three feet into the ground.
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 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.
Do you need planning permission for an 8 foot fence?
You need planning permission if your fence height including trellis exceeds 2 metres (6.56ft) above ground level. If your fence height is higher that 1 metre (3.28ft) and you live next to a highway used by vehicles or the pedestrian footpath of such highway, then you need planning permission.
How deep is a 2.4 m post hole?
Hole Sizes for Fence Posts and Other Types of Posts Post size Height of post above ground Hole size (width x depth) 50mm (2”) 90cm (3′) 15cm (6”) x 30cm (12”) 1.2m (4′) 15cm (6”) x 40cm (18”) 1.8m (6′) 15cm (6”) x 60cm (24”) 75mm (3”) 90cm (3′) 23cm (9”) x 30cm (12”).
How much concrete do I need for a 2 foot post hole?
1 – 4 bags of concrete per fence post are typically what’s needed. This depends on the type of soil, fence design, height, post size and bag weight. In general the depth of the post’s hole needs to be 1/3 to 1/2 of the above ground height of the post.
What size fence post do I need for a 5ft fence?
Use 4in x 4in posts for fences of 5ft and over and 3in x 3in posts for anything under 5ft.
Is a 6 inch hole good for a 4×4 post?
Post Holes- For example: A 4×4 post (actual size 3.5″x3. 5″) has a maximum width of just over 5″ (diagonally). Therefore, the 4×4 post will likely fit into a hole drilled by a 6″ diameter auger.
How much concrete do I need for post holes?
Most fence post holes will need between 1 – 4 bags of concrete to securely hold the post in place. The best way to determine the size of the hole is: Diameter of the hole is 3 times the width of the fence post. Depth of the hole is one-third to half the above ground height of the fence post.
How many bags of gravel do I need for a fence post?
How much gravel do I put in the hole? You should put approximately 2″ to 4″ of gravel in the bottom of the hole making sure that the Post stands 6′ 4″ tall from the ground to the top of the post. How wide should the holes be? An 8″ diameter wide hole should be dug for the posts to be inserted for a solid Fence.
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 deep is a 3m post hole?
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.
