Concrete Calculator for Round Stairs - Metric

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For the top step you need to add the length, width and rise.

For each additional step you have to take the previous steps length and width and add two run lengths to the previous steps length and you have to add one run length to the width of the previous steps width.


Like this: 
Previous step's length + run + run becomes new step's length.
Previous step 's width + run becomes new step's width.

When you have added all the steps you require the total amount of concrete needed will be displayed in the box below.

You will have to remove options you did not use from the form before the final total will be shown.

Use this button to add the first step to your form:



Use this button to add the next step to your form:



Total amount of concrete needed in cubic yards and cubic meters:
Total amount of concrete needed in cubic Meters: m ³
Total amount of concrete needed in cubic Yards: yd ³

When Ordering Concrete

This concrete calculator will help you in estimating the amount of concrete needed for your project. The amount given as needed, does not include any waste. It is recommended, depending on the job you are doing, to add anywhere from an extra 4% to 10% to your concrete order to make sure you have enough concrete to finish the job. Ask when ordering the concrete. They will be able to give you a good idea of what is needed.


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