Quick Answer: How Do You Dig Holes For A Deck Post?

Why deck posts should not be set in concrete?

A deck post should always be placed on top of footing, not inside concrete because it can break.

Concrete tends to absorb moisture and wood expands when it gets wet, so these two factors combined will result in the wood breaking the concrete..

How deep can you dig?

The Kola Superdeep Borehole was just 9 inches in diameter, but at 40,230 feet (12,262 meters) reigns as the deepest hole. It took almost 20 years to reach that 7.5-mile depth—only half the distance or less to the mantle. Among the more interesting discoveries: microscopic plankton fossils found at four miles down.

Does wetting soil make it easier to dig?

Is it harder or easier to dig wet soil? … It is much harder because it’s heavier, it sticks to your shovel, and the wet soil keeps washing back into the hole as you try to dig. You also have the potential to destroy the natural structure of the soil when you work with it wet.

How many footings do I need for a 12×16 deck?

four footingsTo measure out your deck and determine your footings, you will need batterboards and mason’s string. A standard deck will need four footings parallel to the house, but they will need to be temporarily braced by 6 inch-by-6 inch posts.

Can I use 4×4 posts for my deck?

In the past, many decks were built with 4×4 support posts (also called structural posts). But these can bow seriously, even if a deck is only 3 feet off the ground. For that reason, we strongly recommend that you use 6x6s instead, even if your building department does not demand them.

Should I use 4×4 or 6×6 deck posts?

A short 4×4 can carry an awfully big load, and many deck builders use 6×6 posts as a standard, regardless of the height or load of the deck. … Multiplying that area by the expected load tells you the weight a post is expected to carry.

What tool do you use to dig holes?

Digging the right hole is a critical step to gardening….Spade.Gardening Fork.Hoe.Shovel.Mattock.Trowel.Post Hole Digger.Planting Auger.More items…

Will wooden posts rot in concrete?

Simply setting the posts in concrete does create a condition that will accelerate rot in the bottom of the posts. With pressure-treated posts, the rot will be slow. … First, the posts should be set on top of a bed of coarse gravel 3 to 6 inches deep, so the base of the post is in contact with the gravel.

Can deck posts sit on concrete?

In order for posts to properly resist varying degrees of weight, posts must rest on and be anchored to concrete footings. It’s important to note that patios and pre-cast concrete piers do not qualify as proper footings for deck construction. To anchor posts to concrete footings, you need to use a post base connector.

Are 3 2×6’s as strong as a 6×6 post?

One 6×6 will be 22% stronger than three 2×6’s. This assumes, of course, that the long side of the thinner boards is vertical, and that we’re talking standard dimensional lumber where a 2×8 is really 1.5×7.

How far apart should 4×4 posts be on a deck?

8 feetStarting with your perimeter, mark the location of each deck post to locate the fitting position. In general, posts should be spaced no more than 8 feet apart. Some builders position them every 4 feet for a completely rigid frame. The maximum distance between footings is determined by the size of your joist material.

How deep should a post hole be for a 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.

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. … Gravel helps water drain away from the post which can keep wood fences from rotting.

How long will a treated 4×4 post last in the ground?

40 yearsThe treated post that are rated for ground contact are guaranteed for 40 years.

How deep do I need to dig a post hole?

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).

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. … Under normal curing conditions, you can apply heavy weight to the post (a basketball backboard, for example) after just 4 hours.