Quick Answer: How Deep Is A 3m Post Hole?

Should I use concrete for fence posts?

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..

How deep should a post hole be for a 6 foot fence?

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.

Should I use 4×4 or 6×6 fence posts?

Instead of 4×4 posts, go with 6×6 posts. The extra size makes a huge difference. It’s a smart place to invest a little extra in your fence, because if your posts distort after they have been set in the ground with concrete, they are extremely difficult to replace.

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 deep should you dig the holes for 1.8 m wooden fence posts?

Hole Sizes for Fence Posts and Other Types of PostsPost sizeHeight of post above groundHole size (width x depth)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”)1.8m (6′)30cm (12”) x 60cm (24”)5 more rows

How deep do gate posts need to be?

You need to first dig a hole a good 2ft 6 (760mm) to 3ft (915mm) deep (this gets the base of the post below the level that frost penetrates, once below this level the ground is less likely to move as much!

Is 18 inches deep enough for 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.

How big of a hole do I need for a 6×6 post?

10″A 6×6 post requires a 10″-diameter hole. Shovel a 6″ layer of gravel into the hole to provide drainage.

How big of a hole do I need for a 4×4 post?

A general rule of thumb is to dig the diameter of the hole at least 3-4 times the diameter of the post. For example, if setting 4 x 4 wood posts, dig holes 9-12″ in diameter. Posts should be centered in the hole and the posts should always have concrete under them.

What size posts do I need for a 6ft fence?

If you’re setting wooden or concrete posts in concrete you’ll need 8ft (2.4m) posts for a 6ft (1.828m) fence – i.e. your posts are 2ft (0.6m) longer than the fence height. Use 4in x 4in posts for fences of 5ft and over and 3in x 3in posts for anything under 5ft.

Is 2 feet deep enough for fence posts?

The depth of the post hole needs to be 1/3 to 1/2 the height of your fence. For example, if you are building a fence that’s 6 feet tall, you will need a hole that is at least 2 feet deep. … So, if you’re using a standard 4×4 post, you’ll need a hole that’s 12 inches wide.

How deep is a 3ft fence post?

The 2 ft Rule 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.