Create a Tunnel Inspection Map

Use the Create Tunnel Inspection Map command to create a tunnel inspection map that allows you to compare the shapes of two tunnel meshes using the Tunnel Inspection View. You can select to compare a designed tunnel mesh to an as-built tunnel mesh (for example, compare the design mesh to an as-built excavation mesh). Or, you can select to compare an as-built tunnel mesh to another as-built tunnel mesh (for example, compare an as-built excavation mesh to an as-built shotcrete mesh).

Prerequisites:

To create a tunnel inspection map:

  1. Do either of the following to display the Create Tunnel Inspection Map command pane:
    • Select Create Tunnel Inspection Map in Tunnels > View.
    • In the Project Explorer, right-click the Tunnel node and select Create Tunnel Inspection Map.
  2. Enter a Name for the new inspection map.
  3. Optionally, select a Classification to apply to the inspection map that identifies the type of comparison being made (for example, compare the design to the as-built excavation).
  4. Select an existing Layer on which to display the inspection map, or select to create a new layer.

    Next, you will select a base mesh to which you will compare a comparison mesh to identify differences between the two in the Inspection Map View. Delta distances are displayed as underbreaks and overbreaks in the comparison mesh when compared to the base mesh.

  5. In the Base mesh drop-down list, select either a design tunnel mesh or an as-built tunnel mesh to which you want to compare the mesh selected in the Comparison mesh drop-down list.
  6. In the Comparison mesh drop-down list, select the as-built tunnel mesh you want to compare to the mesh selected in the Base mesh drop-down list.
  7. In the Start station and End station drop-down lists, select the tunnel alignment stations that define which parts of the tunnel meshes you want to include in the the map.
  8. Click Apply.

    A new Tunnel Inspection Map node is displayed in the Project Explorer nested beneath the Tunnel parent node.

  9. Double-click the Tunnel Inspection Map node in the Project Explorer to view the map's Properties pane.

    Here you can change the name of the map, its classification, its layer, its associated tolerance values, and its display properties. Click any of the properties to see a description of its function.

    If an individual mesh cell or a group of contiguous mesh cells in the inspection map exceeds the Delta tolerance specified in the Tunnel Inspection Map Properties pane, an out-of-tolerance error flag is displayed in the graphic views. Also, if a delta cannot be computed, an error flag is displayed. Select Flags Pane in Home > View to see details about each displayed error flag.

  10. To continue, do either or both of the following:
    • Run the Tunnel Inspection View command to view the comparison of the two tunnel meshes you selected for the tunnel inspection map in a set of related graphics tabs (see Compare Tunnel Meshes Using the Tunnel Inspection View).
    • Run the Tunnel Inspection Report command to view the comparison of the two tunnel meshes you selected for the tunnel inspection map in an MS Word-based report (see Run a Tunnel Inspection Report).

Related topics

Compare Tunnel Meshes Using the Tunnel Inspection View

Run a Tunnel Inspection Report