How Much Ready Mix Concrete Do I Need For My Extension Foundations?

Building concrete foundations for an extension foundation can sometimes be a very stressful endeavour. Creating the right footing foundation for your extension is extremely important, and will have huge implications on the success of the build. Working out how much ready mix concrete you need for extension foundations is a process that requires consideration of the full project. Taking time to consider this now, and accurately determine the amount of ready mix concrete you need will undoubtedly prevent a great deal of headache on the day of installation. There is nothing worse when installing concrete foundations than realising you do not have enough ready mix concrete to finish the job. Here, we will discuss the steps you should take to ensure that you are fully prepared on the day of delivery.

Building foundations are responsible for safely supporting the weight of your home. They prevent the spreading of subsoil, and ensure an equal settlement of the structure. Getting extension foundations right the first time is essential. Failing to do so could be very costly.

To do this, you must first ensure that all your measurements are completely accurate. Check the plans for the building and discuss these plans with anyone else who is working on site, to ensure that everyone agrees with these measurements. Realising that the concrete footings should be a foot wider on the day of delivery would be very frustrating.

Part of the measurement process is realising the required depth of the concrete. This value will be predicated on the conditions of the ground and the weight of the extension that it supports. Once you have the dimensions for your foundation, and know the width, length and depth that the extension foundations should be, you can then begin the process of calculating how much ready mix concrete you need for your extension foundations.

When ordering ready mix concrete, you’ll have to provide your supplier with the volume of concrete that you require (in cubic metres). This can be done by using a Ready Mix Concrete Calculator.

The first thing you’ll have to do is draw out your foundations and their dimensions. Once you’ve done this, split your drawing it rectangles or squares. This will allow you to determine the width, length and depth of each section of your foundation, which can then be used to determine the volume of each section of your foundations. From this you’ll be able to determine the total volume of ready mix concrete you require for the project.

Once you have the length, width and depth of each section of your drawing, input these values into the Ready Mix Concrete Calculator, one section at a time. By doing this, you will be served the required volume of ready mix concrete for that particular section of your extension foundations. Complete this process for each section of your extension footings.

Once you’ve obtained the required volume for each section of the extension foundations, add these values together to find the total required volume for your foundations. Theoretically, that value is the amount of concrete that you’ll need. However, in real terms, you will likely need a little more. This is because spillage, spreading and variations in measurements can often use up a lot of your ready mix concrete supply. Because of this, we recommend that you order 5 to 10 percent more than the volume you’ve calculated. By doing this, you will minimise the likelihood of a shortage of ready mix concrete, and your project will likely run much smoother.

That’s all there is to it. Good luck with laying your extension foundations!

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