How many bags of concrete do I need for a 3 foot post hole?

Also 1-1/2 bags per hole is about right for a 4x4 fence post. Also remember, the depth of the post hole should be one-half of the above-ground post height. (Example: For a 6' above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground).

As I recall, a 60# bag of concrete is about .

5cf, so you'd need 3 bags per hole..

How many concrete bags would I need for a 8 ft x 8 ft x 6" slab? 54 x 80lb Concrete bags. How much does it cost to pour a 8'x8' x6" slab? Ready-mix costs approx $277.86.

Each hole for the terminal posts must be 8 inches in diameter and 30 inches deep, requiring 0.85 cubic feet of concrete to fill.

two bagsOur example post will require two bags for every post if you're using fast-setting concrete. Fast-setting concrete is ideal for installing fence posts since it doesn't need to be mixed in a bucket or a wheelbarrow.

14.43 Bags of Cement is Required for Laying of 100m² Concrete Block.

elevenThe recommended hole size is 16 inches in diameter and 48 inches deep. You will need eleven 80-lb bags of concrete for the installation. How much does it cost to install an in ground basketball hoop? On average, installation will cost around $450.00 for an in-ground system if you have it professionally installed.

45 cubic feet of concrete when mixed with 2.5 quarts of water.

In order to have enough concrete for 1 cubic yard (27 cubic feet), you'll require 2.2 bags of 60-lb concrete.

Since bags are only sold in whole (not half, or quarter) quantities, you'll need to purchase three (3) 60-lb.

bags for one cubic yard..

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.

Calculate the volume of the hole in cubic metres (using V = πr2h) and then subtract the volume of your post. This will give you the volume of concrete required. Simply multiply the volume figure by 108 (108 bags per cubic metre) to give the amount of 20kg bags needed to fill the void.

Pour the dry concrete straight into the hole leaving 3 to 4 inches of space from the top of the hole. In most cases a 50-pound bag of quick-dry concrete should suffice.

To calculate how much concrete you need, you need to know the post size you are going to use and how many posts you are installing.

Your post diameter and height determine how big each hole needs to be.

As stated above, fence post holes should be 3 times the diameter of your post and 1⁄3 as deep as your post..

How many concrete bags would I need for a 5 ft x 5 ft x 6" slab? 20.8 x 80lb Concrete bags.

As to how many bags....a 55 gallon drum filled clear to the top is actually closer to 60 gallons. And 60 gallons is 8 cu ft. So if you buy 60lb bags, those do 1/2 cu ft each so you would need 16 of them. IF you buy 80lb bags (2/3 cu ft) you would need 12 bags.

You will need 45 bags of concrete mix to make a cubic yard of concrete.

How Many Bags of Concrete do you Need?Bag SizePre-mix Bags Needed to Fill1/4 cu yd1/2 cu yd40 lb bags234560 lb bags153080 lb bags1223

How Much Concrete per Vinyl Fence Post?Post SizePost Height (above surface)80lb Bags Required4×43-4ft double-triple rail9 inch hole15×53-4ft double-triple rail12 inch hole15×55-6ft semi & privacy122

The area is 200 SF, which requires 225 blocks (1-1/8 x 200 = 225 blocks). Three bags of mortar are estimated for every 100 block, therefore 6-3/4 bags of mortar are needed ((225 block x 3 bags mortar) / 100 block = 6-3/4 bags of mortar).

The general rule of thumb when setting a post is that the depth of the post's hole needs to be 1/3 to 1/2 of the actual above-ground height of the post. So, six-foot-high fence posts ideally need to be buried three feet into the ground. The diameter of your post hole should be three times the diameter of your post.

The depth of the hole should be 1/3-1/4 the post height above ground (i.e., a 6-foot tall would require a hole depth of at least 2 feet).

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..

In order to have enough concrete for one cubic foot, you'll require 2.2 bags of 60-lb concrete.

Since bags are only sold in whole (not half, or quarter) quantities, you'll need to purchase three (3) 60-lb.

bags for one cubic foot..

Calculate Concrete Volume With the volume of the submerged post and the volume of the hole figured out, subtract the post volume from the hole volume, and you will have the volume of concrete needed for each hole.

Simply multiply that amount times the number of posts to get a total quantity..

Remember, the depth of the post hole should be one-half of the above-ground post height.

(Example: For a 6 feet above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground).

The calculator will indicate the number of 50 lb.

bags of QUIKRETE® Fast-Setting Concrete you need..

The general rule of thumb when setting a post is that the depth of the post's hole needs to be 1/3 to 1/2 of the actual above-ground height of the post. So, six-foot-high fence posts ideally need to be buried three feet into the ground.

1 - 4 bagsMost 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.

Your project is 32 square feet at a depth of 4”. Here is the quantity that you will need for your slab. Quikrete Concrete Mix: 24- 60lb bags.

Cement, Sand and aggregate requirement for Different grade concreteGrade of ConcreteNominal Mix ProportionCement Required (bag)/cumM151:3:64.5M201:2:46M251:1.75:3.56.75M301:1.5:37.5

3 bagsFor laying bricks and blocks in normal applications (SABS Class II) To lay 1000 bricks = 3 bags cement + 0.6 cu. m.

For a 10 x 10 slab, you would need 77 60-pound bags or 60 80-pound bags. If we add an extra 10%, that's an extra 8 60-pound bags or 6 80-pound bags.

A 40-pound bag of concrete mix makes 0.3 cubic feet, 60-pound bags make 0.45 cubic feet and 80-pound bags make 0.6 cubic feet. For the example given, 56 of the 40-pound bags, 37 of the 60-pound bags or 28 of the 80-pound bags will be needed for the fence installation.

To calculate how much concrete you need, you need to know the post size you are going to use and how many posts you are installing. Your post diameter and height determine how big each hole needs to be. As stated above, fence post holes should be 3 times the diameter of your post and 1⁄3 as deep as your post.

Also 1-1/2 bags per hole is about right for a 4x4 fence post. Also remember, the depth of the post hole should be one-half of the above-ground post height. (Example: For a 6' above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground).

To calculate how much concrete you need, you need to know the post size you are going to use and how many posts you are installing. Your post diameter and height determine how big each hole needs to be. As stated above, fence post holes should be 3 times the diameter of your post and 1⁄3 as deep as your post.

Set the post into the hole and attach 2x4 braces to adjacent sides of the post. Use a level to position the post perfectly vertical. Fill the hole with Fast-Setting Concrete up to 3 to 4 inches below ground level. Pour about a gallon of water per 50 lb bag into the hole and allow the water to saturate the concrete mix.

The number of bags you need will vary depending on the type of concrete mix you choose for your project. If you're using 50lb bags of concrete, you'll need 72 bags to make a yard. If you're using 60lb bags of concrete, you'll need 60 bags to make a yard.

The volume of concrete required for a 10- by 10-foot slab depends on the diameter of the slab.

For a 4-inch slab, either eight 60-pound or six 80-pound bags are required, while for a 6-inch slab, either 12 60-pound or nine 80-pound bags are necessary..

The volume of concrete required for a 10- by 10-foot slab depends on the diameter of the slab. For a 4-inch slab, either eight 60-pound or six 80-pound bags are required, while for a 6-inch slab, either 12 60-pound or nine 80-pound bags are necessary.

Here is the quantity that you will need for your slab. Quikrete Concrete Mix: 24- 60lb bags.

Setting the Post 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.

Project InstructionsDig 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).

...

Add about 6 inches of QUIKRETE All-Purpose Gravel into the bottom of the hole.

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Set the post into the hole and attach 2x4 braces to adjacent sides of the post.More items....

Dry Method Instructions:Prepare and wet the hole. Before you begin, you need to dig and prepare the hole. ... Place post into the hole. Place the post into the hole. ... Place concrete into the hole. ... Pour water on top. ... Tamp the mix. ... Mix concrete with water. ... Place mixture into the hole.Aug 19, 2019

One 80-lb bag of concrete yields . 60 cubic feet when combined with 4 quarts of water. If you're purchasing 80-lb bags of concrete, you'll need 1.66 bags of concrete.

Manufacturers unanimously require vinyl fence posts to be installed into a concrete filled post hole. Setting vinyl posts into concrete provides a consistent footing to ensure the posts will remain inline and true for years to come. Concrete should fill the post hole up to 3-4 inches from the top.

Example Fence Post Concrete CalculationCalculate the post volume. Change post diameter to feet: 3.5” / 12 = 0.2917' Find radius (½ of the diameter): ... Calculate the hole volume. Hole radius (3x post radius): 3 x 0.1458' = 0.4374' ... Calculate concrete volume. Hole volume – post volume: 1.2026 – 0.1336 = 1.069 cubic ft.

An 80# bag of pre-mixed cement, sand and gravel (CONCRETE) is 0.6 cubic foot per the bag. There are 27 cubic feet in a cubic yard. So 27 / 0.6 = 45 80# bags.

How many bags of cement does it take to make 100 blocks? Mixed with sand in the proper 3 to 1 ratio will lay 40 twelve inch blocks or 50 eight inch blocks. So, if laying 8 inch block, you should be able to lay 100 blocks with 2 bags of mortar.

Thus, the quantity of cement required for 1 cubic meter of concrete = 0.98/0.1345 = 7.29 bags of cement.

Batching by volume - DIYMaterials0.2 m3 concrete1 m3 concretecement (no.

25 kg bags)2.512all-in aggregate (volume in m3)0.251.3water (volume in litres)32160cement (no.

25 kg bags)3.51410 more rows.

400 bagsCement bags So, around 400 bags of cement (50kg each) are consumed for 1000 sq ft home.