Conventional Tunnels Modeling

The workflow for modeling a tunnel that is using a conventional tunnel template is as follows:

  • User imports/creates or reference an alignment
  • User is adding a tunnel corridor on his alignment. By default, each tunnel corridor creates a default tunnel unit. The user will have to choose from the dropdown list for the type of the tunnel "Conventional Tunnel".


  • User is adding the reference lines that defines the start and end of the tunnel solid.
  • User is importing in the Tunnel Template GUI a tunnel cross-sections from the Tunnel Catalog.
  • User starts the Place Tunnel command.


The following options are available for input:

  • Tunnel Template - The tunnel cross-section which is used for extrusion. ?
  • Section Length-The length which is used to split the tunnel solid in smaller sections.
  • Start Station Offset - The offset from the start reference line of the tunnel. ?
  • End Station Offset - The offset from the end reference line of the tunnel. ?
  • Vertical Offset-The offset between the WP of the tunnel template and the profile elevation.
  • Template Orientation- If Normal orientation is selected, it will be placed perpendicular to the alignment. If Vertical orientation is selected, it will be placed perpendicular to the global axis.
  • Section Name Prefix-The prefix used to give a name to a section. ?
  • Section Start Number - The number which is used to start numbering sections. ?
  • User places the tunnel by selecting a start and end reference line. Take note that each tunnel unit can contain a single tunnel solid. If the user needs to model different tunnel/reinforcement geometry along the tunnel length he can create multiple tunnel units under the same tunnel corridor. Each unit can contain it's own tunnel solid created by it's own tunnel cross section.