# FAQ: How To Determine How Much Concrete I Need?

## How much concrete do I need calculator?

How to calculate concrete:

1. Determine how thick you want the concrete.
2. Measure the length and width that you‘d like to cover.
3. Multiply the length by the width to determine square footage.
4. Convert the thickness from inches to feet.
5. Multiply the thickness in feet by the square footage to determine cubic feet.

## How much quikrete do I need calculator?

Assume a 10-by-10-foot square area with concrete 4 inches thick. When you multiply 10 by 10 by. 333 feet, you get 33.333 cubic feet. Divide the total cubic feet needed by the total cubic feet that can be made from one bag of Quikrete Concrete Mix.

## What is the formula for calculating concrete?

Calculating the volume for concrete requires using three dimensions: length times width (which is area) times the height (thickness) or L x W x H. If you are using feet as your standard unit of measurement, this formula will give you the volume of concrete in cubic feet.

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## How many bags of concrete do I need for a 10×20 slab?

A 60-pound bag yields. 017 cubic yards, and an 80-pound bag yields. 022 cubic yards. For a 10 x 10 slab, you would need 77 60-pound bags or 60 80-pound bags.

## How many square feet does a yard of concrete cover at 4 inches thick?

One Cubic Yard of Concrete: 4-inches thick – covers 81 square feet. 5-inches thick – covers 65 square feet.

## How many cubic meters is a 25kg bag of concrete?

Concrete is a mix, typically of 1 part cement to 4-5 aggregate, and a cubic metre of finished concrete weighs around 2.5 tonnes, so requires around 500kg cement or 20× 25kg bags. In direct answer, there is about 1/100th or 0.01 m3 in a 25kg bag.

## Can you pour concrete directly on dirt?

Long story short, yes you can pour concrete over dirt.

## How much area does a 80lb bag of quikrete cover?

4 sq feet in that amount of cement.

## How much quikrete Do I need to fill a 5 gallon bucket?

Your 5 gallon bucket is 0.7777850 cubic feet dry. You will need 2 – 50lb bags of Quikrete Fast Setting Concrete Mix to complete your project.

## What is the correct mix for concrete?

In terms of the ratio for concrete, it depends on what strength you are trying to achieve, but as a general guide a standard concrete mix would be 1 part cement to 2 parts sand to 4 parts aggregates. For foundations, a mix of 1 part cement to 3 parts sand to 6 parts aggregates can be used.

## How much does 2 yards of concrete cost?

According to the NRMCA – Ready Mixed Concrete Industry Data Survey, the average cost of concrete in 2018 was \$120 per cubic yard, or \$240 for the 2 cubic yards needed for a typical 10-by-10-foot patio.

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Bulk Concrete Prices.

Cubic Yards Price Range
1* \$140-\$200
2* \$280-\$400
3* \$420-\$600
4* \$560-\$800

## How do I calculate cubic meters of concrete?

1 cubic meter (1m3) can be visualised by drawing a cube 1 meter wide x 1 meter tall x 1 meter depth. To calculate the concrete volume of a concrete slab you multiply the length, width and depth of the concrete slab to get an estimate of the amount of concrete you need in cubic metres m3.

## Do you need rebar for 4 inch slab?

No, you do not need rebar for a 4inch slab of concrete on grade. A 4inch-thick slab cast on the ground and in permanent contact with it will float and rebar is not required. Rebar is recommended on concrete measuring 5 – 6 inches thick.

## How many bags of concrete makes a yard?

On average, it will take 90 40lb bags, 60 60lb bags, or 45 80lb bags to fill one cubic yard of concrete.

## How many 80lb bags of concrete makes a yard?

If you’re using 80lb bags of concrete, you’ll need 45 bags to make a yard.