Free Tributary Area Calculator – No Login Required

This free tributary area calculator can be used to compute and visualize influence areas of columns.

• Check out this youtube tutorial and the documentation to get started.
• Use the toolbar to the left to add floors and columns. Click on the buttons and follow the instructions at the bottom.
• Use the mouse to zoom, pan and select objects in the viewport.
• Click on the “Compute Tribs” button to calculate and visualize tributary areas.
• To see numeric values of the computed tributary areas, use the “Labels” tab to the right.
• If you want to read more about the topics of column tributary areas, see these two articles: Tributary areas of columns and how to best calculate them and Irregular Tributary Areas and How To Best Calculate Them.

Note that the calculator works best on devices with bigger screens, such as laptops and tablets.

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Please note that the tributary area calculator above is a limited version of Tribby3d. To get access to the full version and more functionality, please create an account. See below for examples of additional features that are available in the full version.