1. Click Define Vertical Surface, and on the toolbar, select the setting method and enter the height of vertical surface.
2. Select the entity that you want to define, and then right-click to confirm.
3. To view the height of the vertical surface, click View Vertical Surface.
1.When defining the height of vertical surface,you can select one edge to set.
2.To cancel the vertical surface, define the height of the vertical surface again, and enter 0 for the height.
Download Define Vertical Surface and View Vertical Surface