Click on the TLBWI icon from the Add-ins tab on the ribbon or type in the command manually to show the TL BWI Calculator Palette.

Once the palette is visible type in the input parameters to compute the barrier needs an index. Optionally use the copy to clipboard button and paste the calc log in cad, spreadsheet, or elsewhere for project documentation purposes.

Note: Verify results manually against the Barrier Need Nomograph before making final barrier need decisions especially when the computed index is within 5 units from 90

Refer to the BC Supplement to TAC, Pages 610-3, April 2019 edition, BC Ministry of Transportation, Canada for a discussion on the roadside barrier index calculation.

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin. You may need to restart the Autodesk product to activate the app/plug-in. To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10/11) and uninstall as you would any other application from your system.

Refer to the BC Supplement to TAC, Pages 610-3, April 2019 edition, BC Ministry of Transportation, Canada for a discussion on the roadside barrier index calculation.