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.
What size hole should I drill for a 4×4 post?
Therefore, the 4×4 post will likely fit into a hole drilled by a 6″ diameter auger. However, this leaves less than 1/2″ at the widest part for cement or dirt to be packed in to secure the post. For this reason, an 8″-10″ auger would work much better and provide the necessary fill space for cement or tamping.
How much concrete do I need for a 4×4 post hole?
A 4″ diameter fence post needs a post hole that’s about 12″ in diameter. The depth below ground should be about 1/3 the height of the post above ground. For example, a 5′ high post will need about a foot and a half deep hole.
How Much Concrete For A 4×4 Fence Post?
| Depth | 50 Lb Bags |
|---|---|
| 10″-14″ | 2 |
| 16″-22″ | 3 |
| 24″30″ | 4 |
| 32″36″ | 5 |
What size auger do I need for fence posts?
A 12-inch auger, best attached to a heavy machine, will create a hole large enough for a 6×6 or 4×6 post and plenty of concrete. Smaller augers, like 4- or 6-inch options, are appropriate for light-duty work (like mailboxes) as well as metal fence posts for chain-link fences.
How big should a hole be for a 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.
How far apart should fence posts be?
8 to 12 feet
Most fence posts can be spaced 8 to 12 feet apart. While this is a general criteria, it doesn’t cover all scenarios. For instance, high tensile fence can have larger spacing, requiring line posts every 15 to 20 feet for field fence styles, and as much as 20-30 feet for high tensile barbed and smooth wire.
How many bags of concrete do I need for a post hole?
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.
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.
How many bags of concrete do I need for a 4×4 slab?
As per calculation, for a 4×4 slab at 4 inch thick, generally you will need approximately either 12 bags of 60lb or 9 bags of 80lb of premixed concrete, at 5 inches thick slab, either 15 bags of 60lb or 11 bags of 80lb premixed concrete are required, while at 6 inches thick slab, either 18 bags of 60lb or 14 bags of
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”) |
How big should a hole be for a 6×6 post?
Dig, align, and finish the job
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.
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 do you dig a 4 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 far apart do you put 4×4 fence post?
For most privacy and general-purpose fences, 6 or 8 feet between posts is standard. Always check the manufacturer’s recommendations for proper spacing.
What size t post do I need for a 4 ft fence?
When figuring out what size T-post to use for a four-foot fence, remember that you will drive the posts about two feet into the ground. This means you need posts that are at least 24 inches longer than how tall you want your fence. For a four-foot fence, you should use T-posts that are at least six feet long.
How deep does a 4×4 fence post need to be?
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 long does it take to dig a 4 foot post hole?
Post Hole Digging Tools
If the soil is loose and muddy, this tool is all you need. In such soil, it can dig a 4-foot-deep hole that is the perfect size for a fence post in a matter of minutes.
Is a post hole digger worth it?
While that won’t make a lot of difference if you have loamy, soft soil to begin with, for those who have hard-packed clay soils it certainly does. If your soil is very solid, or has a lot of rocks, a post hole digger is an essential tool to have.
What is the best tool for digging post holes?
The 6 Best Post Hole Diggers
- True Temper 2704200 Post Hole Digger.
- AMES 2701600 Post Hole Digger.
- Seymour Structron Hercules Post Hole Digger.
- XtremepowerUS Electric Post Hole Digger.
- Southland SEA438 One Man Earth Auger (Our Top Pick)
- Hiltex 10525 Electric Earth Auger.
How many square feet does a 50 lb bag of quikrete cover?
Regarding this, how much does a 50 lb bag concrete cover?, as 133 lb concrete = 1 CF, so a bag of 50 lb concrete = 50/133 = 0.375 CF, therefore, a 50 lb bag of concrete approximately cover around 1.5 square feet area upto standard depth of depth of 3 inch for your patio and sidewalk.
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