# How To Calculate Concrete Yardage

More and more people are working on their own homes to save on construction bills. One of the projects that you can carry out on your own is cementing your own patio, porch, or walkway. To do this, however, you should have an accurate measurement of how much concrete you need to purchase to fill the space. Excess concrete cannot be returned, and while it is possible to store excess cement in the garage, this will take up valuable space. Here’s how to compute your concrete yardage.

Measurements. Begin by getting the measurements for your yard. This includes the length, width, and the height of the yard. Most yards have four regular sides, and are easy to compute when getting the concrete yardage. However, you can also have a yard with an irregular shape, such as a spherical or oblong shaped yard. For this, however, you will need to get the necessary measurements. Measure as exactly as possible, to get the most accurate results. If you are using tape measure and are covering large areas, you may want to ask a friend to help you keep the tape measure in place.

Getting the volume. Once the measurements are prepared, the next step is for you to get the volume for the concrete yardage. The formula for volume is length multiplied by the width and by the height. In mathematical terms, this has a formula of L x W x H. keep in mind, however, that unusual shapes will have specific formulas to follow.  For a yard that is 20 feet in length, 40 feet wide, and which will have a cement layer of half a feet, the volume of cement that you will need is 400 cubic feet.

Conversion. The next step is for you to convert the concrete yardage into cubic yards. The cubic feet measurement is the result of measuring the yard in terms of feet, which is how most measuring equipment are calibrated. Cement, on the other hand, is usual sold and purchased in terms of cubic yards. To undertake this conversion, you will need to divide the result in cubic feet by 27. For a yard that is 20 feet in length, 40 feet in width, and half a foot in thickness, the converted value in cubic yards is 14.81 cubic yards.

Additional concrete yardage. Before purchasing your concrete, however, you should add at least five percent to the sum of concrete that you will buy. The excess five percent will safeguard you from potential miscalculations that can lead to too little cement. The last thing that you want is to find out that you have a bit too little cement – after you have already mixed water into the cement. To add five percent to the concrete yardage, you need to multiply the cubic yard measurement by 1.05. For 14.81 cubic yards, adding fiver percent will result in 15.55 cubic yards of cement in total.

Once you have figured out exactly how much cement you need for your yard, construction can easily be done.  Through these steps, you can have enough for cement even for an emergency, but without having to waste too much cement.