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 big of a hole do you need for a 4×4 post?
12 inches
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 1 foot deep enough for fence post?
Determining Post Length You should always bury one-third of your fence post underground. This means that unless you are building a 2-foot fence, which is unlikely in any garden, a 1-foot hole will not be deep enough to support your post. For main and gateposts, you should dig the holes an additional 6 inches deep.
How deep should a 6×6 deck post be?
The depth of your hole should be about 1/4 of your post. For a 6×6 pole, the holes should be approximately 12 inches in diameter. As a general rule, the insertion hole width should never be less than 10 inches.
How deep do post holes 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 many bags of concrete do I need for a 4×4 post?
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.
Is 2 ft deep enough for fence post?
The minimum depth that a post hole should be for a panel section is two feet. A general rule used when building a fence is to dig the holes ⅓ to ½ of the post’s aboveground height. The more of the post that is underground, the more sturdy and durable the fence will be once completed.
How deep should post hole be for deck?
Dig the holes six inches deeper than the required frost line depth for your area, and slightly wider than the concrete footer tubes you’ll be using. A power auger can make this step easier and faster.
How deep does a post hole need to be?
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 deep should I bury a 20 foot 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.
