Calculate that quantity of rainwater that will be collected in a group of shapes - "Other > Rainwater Collection"

Note: To use the Add Group feature, you must be logged-in to a Pro account. To learn how to upgrade, visit this link: How to upgrade to a Pro account

Create the shapes

1. Create two or more shapes: For example; a rectangle and a polygon.

   To learn how to create the shapes, visit these links:

    

   Rectangle Tool—Draw a rectangle

   Circle Tool—Draw a circle

   Polygon Tool—Draw a polygon
   

    

Add the overlays to a folder

2. At the top of the Layers Panel, click on the Folder Icon displaying the tooltip: "Add Group".
   You will see the folder added to the Layers Panel.
    
3. Click and drag each shape’s row into the folder.
   The folder now holds a set of overlays, so the folder is considered a Group.

   To learn more about grouping overlays, see; Grouping markers/elements by using folders.

Configure the calculation

4. At the top of the Layers Panel, click on the Toolbox's gear and wrench icon.
   You will see a window with Core Operations and Plugin options appear.
    
5. Under the "Analysis" heading > "Other" subheading, click on the link: "Rainwater Collection".
    
6. Under the "Select Group" heading, click on the button: "Select".
    
7. Click on the group you created.
    
8. Under the "Rainfall" heading, type in the quantity of rainwater that falls on a square meter. You can click the up/down arrows to make fine adjustments.
    
9. Under the "Rainfall Unit" heading, select the unit for the quantity of rainfall that falls on a square meter. The options are:
   • Millimetres.
   • Inches.
    
10. Under the "Coefficient" heading, type in the percentage of rainwater that will be collected.
    Note: The coefficient is the ratio of rainwater that will be collected, to the rain that falls. The coefficient can be affected by features of the location, such as; material, slope, etc.
     
11. Under the "Output Unit" heading, select the unit for the quantity of rainfall that will be collected. The options are:
    • Liters.
    • Gallons.

Calculate the data and view the results

12. Click on the button: "Calculate".
    You will see a new page display the:

    • Area measurement of each shape.
    • Total area of all shapes.
    • Quantity of rainfall that will be collected in each shape.
    • Total quantity of rainfall that will be collected in all shapes.
     
13. In the top-right corner of the Toolbox window, click on the "X" button, to close the window.