Select the ‘Structure Place’ button from the Linear Draft toolbar and follow the prompt to select a marker.
At this point, you should select one marker.
After selecting the marker, accept the choice by right-clicking the mouse button. A new prompt will appear asking you to select the rails.
Left and right rail selection will define the orientation of the structure and the annotation boxes.
In the example below, the chainage is increasing from right to left.
Accept the rail selection by left-clicking the mouse button. Once accepted, an additional prompt asking you to select the right rail will be displayed. The right rail for a TTC will be the right rail of a 2nd track.
Accept the selection by left clicking the mouse button and the ‘Create Structure’ form will appear.
Choose type 'TTC'.
- Editing a mast length value will automatically change the boom/gantry height.
- Changing the boom/gantry height will automatically update the mast length.
- Changing the Top of Foundation (ToF) height, with the numeric controls, will automatically adjust the associated mast length by the same incremental amount.
The ‘Create Structure’ from for a TTC will have additional information compared to a STC, as there is now a boom/gantry that can be edited. Also note that the ‘Track Details’ section of the form displays that there are 2 tracks associated with the structure.