Table of Contents
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 deep should fence post holes 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). Add about 6 inches of QUIKRETE All-Purpose Gravel into the bottom of the hole.
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.
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.
Is 3 feet deep enough for fence posts?
Is 3-Feet Deep Enough For Fence Posts? As a general rule of thumb one-third of your post should be underground, the other two-thirds above. Let’s take a standard 6foot (72 inches) fence as an example. You will need a 9foot (108 Inches) post so that 3ft (35 inches) can be underground and 6ft can be above ground.
How big of a hole do you 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 much gravel goes in the bottom of a post 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.
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 should a 7 foot fence post be?
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.
Do you need planning permission for an 8 foot fence?
You will not need to apply for planning permission to take down a fence, wall,or gate, or to alter, maintain or improve an existing fence, wall or gate (no matter how high) so long as there is no increase in its height.
How deep should timber fence posts be?
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.
How deep should a 5ft fence post be?
Keep the height of your fence in mind when digging your post holes. As a general rule of thumb, you’ll need to place at least 1/3 the height of the post in the ground. For example, a 6-foot tall fence will need at least 2 feet of post in the ground.
Should fence posts be set in concrete?
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.
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 a 6×6 fence post be?
In general, the holes should be at least 3 feet deep for posts that protrude 8 feet or more above the level. Inserts that extend 6 feet above the ground should have holes that are at least 2.5 feet deep.
How long will a treated 4×4 post last in the ground?
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. There are a few factors that influence how long the 4×4 can last in the ground.
How big should the hole be for a deck 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 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.
Should I put gravel in post hole?
DO Employ a Base Gravel Layer If a fence post fails without any sign of a pest infestation, it’s likely that the failure was caused by moisture that rotted the wood over time. Next, pour an additional three inches of gravel into the hole, tamping down a second time.
How much gravel do I need for a hole?
Measure the length and width of the area in feet and multiply the figures together. Multiply your area figure by the depth of gravel that you wish to use, ensuring your measurement is also in feet. If your depth is in inches, divide it by 12 first. You now have a cubic feet volume figure.
What type of gravel in the bottom of a post hole?
Pea gravel is commonly used for fence post holes. Gravel that is roughly three eighths of an inch in size is generally a good medium between drainage and support, though gravel close to that size also may be used. If you want to use the best gravel for your area, you may want to consult a contractor.
