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 to Figure Concrete Volume?
Concrete volume is an important consideration for a variety of construction projects. Whether you are building a foundation for a new home or pouring a patio, knowing how to figure the volume of concrete you need is essential.
Fortunately, the process for calculating concrete volume is relatively straightforward and can be done with basic math.
Before you begin to figure concrete volume, you will need to know the dimensions of the area that you are pouring concrete into.
Measure the length, width, and depth of the space in feet, and then multiply those three numbers together to get the total volume in cubic feet.
For example, if the space is 20 feet long, 10 feet wide, and 4 feet deep, you would multiply the numbers together to get 800 cubic feet.
Next, you will need to convert the volume from cubic feet to cubic yards. To do this, divide the total volume in cubic feet by 27, which is the number of cubic feet in one cubic yard.
Continuing with the same example, you would divide 800 cubic feet by 27, giving you a total of 29.6 cubic yards. The last step is to convert the volume to the number of concrete bags needed.
This can vary depending on the size of the concrete bags available, but the most common size