The best way to calculate how much concrete you will need in cubic yards is to do the following:
- Mark your area that needs concrete and divide it into smaller areas.
- Calculate the volume of your area after determining its shape (see the examples below) by multiplying it with the thickness of the concrete.
- Convert the volume from feet to cubic yards to get a precise number of concrete that you need – in cubic yards.
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Just follow these steps:
- Measure the area in feet.
- Multiply length by width, and then by thickness.
- Divide the resulting number by 27 to find cubic yards.
What is the formula to calculate yards of concrete?
how much concrete do i need for a 10' x 10' slab?
- @ 4" thick you'll need 1.25 yards of concrete
- @ 5" thick you'll need 1.6 yards of concrete
- @ 6" thick you'll need 2 yards of concrete
What is the formula for a yard of concrete?
To produce a cubic yard of 4000 psi concrete, you have to adjust the concrete mixing ratio to:
- 611 pounds of cement or (277kg)
- 1450 pounds of sand or (657kg)
- 1600 pounds of stone or (725kg)
- 33- 35 gallons of water or (133L)
How to figure how many yards of concrete you need?
To help you calculate concrete, here are a couple of steps that you can follow:
- Establish the right thickness that you want the concrete to have.
- Get the right length and width of the area that you want to cover.
- Multiply the length by width so that you can get the correct square footage.
- Convert the thickness of the concrete from inches to feet.
How do you figure out a yard of concrete?
Aside from style alone, few people know how to choose between stone, brick, or concrete pavers for their patio ... A standard patio ranges between $800 and $4,500, though the size of your yard and patio might dictate the materials you choose to work ...
What is the formula for figuring out concrete?
Use the formula. 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.
How many yards are in a 24x24 concrete slab?
7.11 yardsFor example, for a concrete slab that is 24' X 24' X 4”, simply enter 4 in the Thickness/Depth field, 24 in the Width field, and 24 in the Length field. Click “Calculate”. Your answer should be 7.11 yards. Note: The Concrete Volume Calculator can also be used to determine yardage for aggregate products.
How many yards of concrete does it take to pour a 10x10 slab?
1.3 cubic yardsThe 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 sq ft does a yd of concrete cover?
Concrete volume is measured in cubic yards. When poured on a perfectly level surface, one cubic yard will cover 27 square feet at one foot thick.
How many yards of concrete do I need for a 10x12 slab?
Regarding this, “how much concrete do I need for a 10×12 slab?”, at 4 inches thick, generally you will need approximately 1.46 cubic yards or 39.6 cubic feet (either 86 bags of 60lb or 67 bags of 80lb) of premixed concrete for a 10×12 slab, at 5 inches thick slab, 1.85 cubic yards or 50 cubic feet (either 109 bags of ...
How much does it cost to pour a 24x24 slab of concrete?
A typical 24x24 garage slab costs between $3,057 and $5,944 with prices ranging from $5.31 to $8.31 per square foot for a 4” reinforced slab of concrete, and $6.83 to $10.32 per square foot for a 6” slab of reinforced concrete.
Does a 10x10 concrete slab need rebar?
Rebar is not necessary for every concrete project. The general rule of thumb is that if you are pouring concrete that is more than 5 inches in depth, you are probably going to want to add in some rebar to help reinforce the entire structure.
How many bags of concrete do I need for a 10x10 slab 4 inches thick?
At 4″ thick, for a 10×10 slab, generally, you will need 1.23 cubic yards or 33 cubic feet or either 74- 60lb or 56-80lb bags of premixed concrete.
How many square feet is a yard of concrete 4 inches thick?
81 square feetOne Cubic Yard of Concrete: 4-inches thick – covers 81 square feet.
How much does it cost to pour 1 yard of concrete?
On average, homeowners pay $117 per cubic yard of concrete, with a typical cost range between $104 and $144 per cubic yard.
How do you calculate yards?
Now, let's convert all three dimensions to yards. Here's how to do this: Convert the dimension in inches to yards (6 inches ÷ 36 inches = 0.167 yards) Convert the dimensions in feet to yards (12 feet ÷ 3 = 4 yards)
What size is a yard of concrete?
how is a yard of concrete measured? There are 27 cubic feet in one cubic yard. A cubic foot measures 12 inches wide x 12 inches high by 12 inches deep.
How to find cubic yards of concrete?
Essentially you are solving for volume and then converting to cubic yards. For concrete, the formula for volume is as follows: length x width x thickness.
How many yards of concrete do you need to order?
Many ready mix companies will have a minimum order of 1 yard, and will charge shortage fees when ordering partial batches. The average truck holds between 9 and 11 yards total. If your project requires more concrete, multiple trucks will be necessary.
Why is it important to check the size of the concrete on your footing?
The excavator may have dug too deep, or it may have rained and footings needed to be dug out deeper to reach firm soil. So it is important to check a variety of spots on your footing and get an average size. Then use the calculator to figure the amount of concrete needed.
What is bagged concrete used for?
Bagged concrete is ideal for: Pouring small slabs for sidewalks or patios. Setting posts for fences or mailboxes. Making repairs to foundation walls, walkways or steps.
How many linear feet are there in a 6' step porch?
The porch also has 9 linear feet of 6" step. So enter in the footing calculator, 6" depth by 12" width (always figure steps with a 12" width) by 9' length. This totals .17 cubic yards.
How much to add to slab for concrete?
Rule of thumb: add 1 / 4 " to the thickness of your slab for your slab concrete budget. This assumes you have the job evenly graded to the right depth, and the grade is well compacted.
How thick is a 12x12 footing?
This 12" x 12" footing needs to be calculated 12" x 16" so the footing is figured to go above grade to reach the 4" slab thickness.
Concrete calculator formula for floors and slabs
This is how you use a formula to calculate concrete for a square concrete slab or a rectangular shaped floor or slab.
concrete calculator formula for a round slab
The formula to calculate concrete yardage for a round slab is very different than the formula for a square slab. Square footage is calculated using Pi and the diameter of the circle to help determine cubic yardage.
calculator formula for a concrete wall
Calculating concrete yardage for a wall uses the same formula as a slab.
Formula to calculate concrete for a footer
Calculating concrete yardage for a footing is done much like a slab, you just usually have smaller units of measurement for width.
Concrete calculator formula for a square column
Calculating concrete for a square column first starts with calculating the cubic feet of the column.
Formula to calculate concrete for a round column
The formula to calculate concrete yardage for a round column is just like the round slab formula above. The difference is a column's height is usually much greater than a slab.
How to calculate concrete for steps
This is how you calculate concrete yardage for a set of concrete steps.
Calculator Use
Calculate volumes for concrete slabs, walls, footers, columns, steps, curbs and gutters. Enter dimensions in US units (inches or feet) or metric units (centimeters or meters) of your concrete structure to get the cubic yards value of the amount of concrete you will need to make this structure.
Curbs & Gutters
We calculate the volume in sections from the ground to the top of each section. The Curb and Gutter are each a section.
How to calculate how many yards of concrete do you need for different applications?
These calculations often use simple mathematical equations, depending on the shape of the object. For example, slabs, columns, holes, beams, and walls, often have the shape of a rectangle, square, or a circle.
How many square feet in a yard of concrete?
Generally, a yard of concrete means a cubic yard, which resembles volume. Whereas, a square foot is an area unit. Hence, in order to calculate how many square feet in a yard of concrete, we should also consider thickness.
How many yards of concrete do I need for a 30x30x4 slab?
For a slab of 30x30x4, you will need 11.11 cubic yards of concrete. Actually, the calculation is simple, in order to calculate the volume of the 30 feet x 30 feet x 4 inches slab, you need to convert the units from inches and feet to yards first. Hence, you will end up having the following equation, volume = area x thickness = 30/3 x 30/3 x 4/36 = 11.11 cubic yards.
How many yards of concrete do I need for 800 square feet slab 6 inches deep?
For 800 square feet slab, 6 inches thick, you will need exactly 14.81 yards of concrete. The formula is as follows, 800/9 x 6/36 = 14.81 cubic yards. We divide by 9 in order to convert square feet into square yards, and by 36 to convert inches to yards.
How many yards of concrete do I need calculator?
CONCRETE CALCULATOR FORMULA Multiply the length by the width to determine square footage. Convert the thickness from inches to feet. Multiply the thickness in feet by the square footage to determine cubic feet. Convert cubic feet to cubic yards by multiplying by.037.
What does 1 yard of concrete weigh?
Concrete Weight per Cubic Yard A solid slab of concrete weighs 4,050 pounds per cubic yard.
How much concrete do I need for a 10×10 slab?
For a 10 x 10 slab, we’d suggest a mix with a capacity of about 4,000 pounds per square inch, or psi. This is basic for residential projects, and it can withstand traffic and support heavy loads.
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.
How many cubic feet is a bag of concrete?
45 cubic feet of concrete when mixed with 2.5 quarts of water. In order to have enough concrete for one cubic foot, you’ll require 2.2 bags of 60 -lb concrete.
How much is 5 cubic yards of concrete?
A full truckload of concrete generally holds 10 cubic yards, while partially filled trucks or “short loads” cost $53 per cubic yard more, or about $172 per yard. Short-Load Concrete Prices.
How many bags of cement do I need for 100 square feet?
4 bags ( 401 kg) of cement and 1593 nos bricks are required for 100 square feet 13.5 inch brick wall.
How to calculate cubic yard of slab?
Once you find the dimensions of your slab, input them into the calculator along with the thickness. Enter your project area measurements rounded to the nearest foot. If you’d rather do the math yourself, simply measure length, width and height in feet. Then multiply these dimensions together. Divide the resulting number by 27 to find the cubic yardage.
How to calculate how much concrete I need for a slab?
How do I calculate how much concrete I need for a slab? To calculate the amount of concrete you need for a slab, you should find the cubic yardage of the area you will be filling. Just follow these steps: Measure the area in feet. Multiply length by width, and then by thickness.
How many square feet does an 80 lb bag of concrete cover?
One 80lb -bag covers an area of about 2 square feet, for a slab 4 inches thick. Two 60lb -bags of concrete cover an area of about 2 square feet for a slab that is 6 inches thick.
How many cubic yards of concrete can a truck hold?
A truckload of concrete can usually hold a maximum of 10 cubic yards.
What factors affect the cost of concrete?
There are several things that can affect the cost of your concrete project, including: How complicated the project is: stairs will likely cost more than a slab, for example. Materials: polymer concrete is often more expensive. Labor prices: jobs that take longer and need more workers will have a higher price.
How long does it take for concrete to harden?
Here are a few common varieties of concrete: Quick-set: Hardens in 20 to 40 minutes. Best for small projects. Regular-set: 24 to 48 hour set time. Used more for large projects. High-strength: Usually sets in 10 to 12 hours.
Does adding rebar to concrete cost more?
Extra strength: adding rebar or mesh to the concrete will up the cost. Additional tasks: if pros need to remove debris, get rid of your existing patio or dig before starting, it will be more expensive.
How much concrete do I need?
Enter your length, width, and thickness then hit calculate and you'll see how many cubic yards you need.
How high should I grade concrete?
Once I've determined the average grade of the dirt, I can set the finish concrete floor grade up 4, 5, or 6 inches from that, depending on how thick I want my concrete floor.
What to do if you don't order concrete?
If you make a mistake and don't order enough concrete, (hopefully not) just call the concrete dispatcher and he will send another concrete truck with the balance on it. But be prepared to wait if the concrete company is busy and doesn't have a truck waiting.
Can you use a laser level on a yard stick?
Using a laser level this can be done quite easily. I use a laser level that self-levels itself when you turn it on, that way you can be sure the readings you get are accurate. For a grade stick I use a long, narrow piece of wood with a yard stick attached to it.