Tunnel Driving Box

Use this dialog to define the size of the driving box.

Where to Find the Dialog

In the toolbox, select SFI Properties..., go to the Tunnel tab, and choose Driving Box...

Using the Dialog

You can enter the width and height values for the driving box manually, or retrieve them from the tunnel standards.

Procedure

1. Select the desired tunnel standard from the dropdown list, or enter values manually.
2. Adjust width and height as needed.
3. Click OK to confirm the settings.