Grade Slope Along Surface

Grade Slope Along Surface

Win32 and 64, English

Red Transit Consultants, LLC
Creates a 3D polyline at a desired grade or slope along a tin surface.

General Usage Instructions

The app is quite easy to use beginning by prompting for a tin surface.

Next, the user may enter the desired grade/slope (default value is 2.00%) or pick the start point for the 3D Polyline.

After selecting the start point, the app will show two arrows at the grade/slope value, if applicable.

The user can again adjust the grade/slope as desired and the arrows will reflect the entered value.

Entering a grade/slope of a negative value will indicate a downslope, positive indicates an upslope.

Picking a point on one side or the other will plot the 3D Polyline in that direction until the desired grade/slope can no longer be achieved.



Ribbon/Toolbar Icon Command Command Description


Creates a 3D polyline at a desired grade or slope along the tin surface.


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 7/8/8.1/10) and uninstall as you would any other application from your system.

Additional Information

This product has been tested for both Windows 32bit and 64bit systems.

Known Issues

The app will only process on tin surfaces. If the entered grade/slope exceeds a possible slope, the green graphic arrows representing that grade/slope will not appear.


Company Name: Red Transit Consultants, LLC

Author/Company Information

Red Transit Consultants, LLC

Support Information

Contact at any time for support at

Version History

Version Number Version Description

Upgraded for 2019 product (No change in version number). Resolved an issue where command would get stuck in an infinite loop and ultimately lock up. To resolve, added a maximum number of vertices. The default value is set to 1000 but can be overridden with the keyword Max when running the command.

Added 2018 product support (No change in version number).

Initial release.

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