1 – 4 bags of concrete per fence post are typically what’s needed. This depends on the type of soil, fence design, height, post size and bag weight. In general the depth of the post’s hole needs to be 1/3 to 1/2 of the above ground height of the post.

## 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.

## 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 much concrete do I need for an 8 foot 4×4 post?

Here in Northeast America, the most common procedure is to dig a 8″ diameter hole approx 2.25–2.5′ deep, and a 4×4 posts is placed in the center. Approx 70–80 lbs of concrete is poured in dry, and then it is packed tight with a bar.

## How many bags of concrete do I need for a 4×4 post?

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.

## How big of a hole do I 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 many bags of concrete do I need for a 10×8 slab?

Regarding this, “how many bags of concrete do I need for a 10×8 slab?”, at 4 inches thick, generally you will need approximately either 58 bags of 60lb or 45 bags of 80lb of premixed concrete for a 10×8 slab, at 5 inches thick slab, either 73 bags of 60lb or 56 bags of 80lb premixed concrete are required, while at 6.

## How many bags of quikrete do I need for a 10×10 slab?

The thickness of your 10′ x 10′ slab will determine just how many bags you need. The average thickness of a 10′ x 10′ concrete slab for a shed is 4 inches thick. At 4″ thick, your 10 x 10 slab will take 56 bags of concrete that weigh 80 lbs.

## How much concrete do I need for a 30×30 slab?

18 yards of 3000 psi concrete mix @ 135.00 per yard. Wire mesh reinforcement. A double row of #4 rebar around the edges. Labor to form the slab.

## 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 many bags of concrete do I need for 100 square feet?

Number of cement bags are required for 100 sqft 6 inch slab = 11.4 bags.

## How many bags of cement do I need?

For concrete, the formula for volume is as follows: length x width x thickness. To determine how many bags of concrete you will need, divide the total cubic yards needed by the yield.

## 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 Sakrete are in a post?

At least 2 bags per fence post, sometimes more depending on the It does what its supposed to do. At least 2 bags per fence post, sometimes more depending on the size of the hole and the post.

## How much post mix do I need per post?

How much Post Mix do I need for a fence post? The exact amount of Post Mix Concrete needed will vary depending on the width and depth of the hole, but as a general rule you’ll need about one and a third bags for a standard fence post.

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

How Long Will A Treated 4×4 Last In The Ground? (Explained) 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.

## How do I keep my post level while concrete dries?

You need to level it in two directions with a 4-foot level. After getting it straight in the first direction, hold one of the braces against the post and drive a single screw to connect the brace to the post. You can then level and brace the post in the other direction and begin filling 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.

## How many 20kg bags of concrete do I need?

Drymix Products One 20kg bag makes: To make 1m 3 : 0.009m 3 OR 9 Litres 110 bags Packaging 20 kg bag size 60 bags to a pallet (1.2 tonnes).

## How much cement do I need for a 10×10 slab?

The amount you will need for a 10 x 10 slab is 1.3 cubic yards, we always add an extra 10% to allow for any slab depth variations or spills that may occur.

## How many 80 bags of concrete make a yard?

One 80lbs bag of Quikrete Concrete Mix will yield approximately . 60 cu ft. So it will take 45 bag to equal one cubic yard of concrete.