Multi-Copy with Secondary Structure is used to make multiple copies of two separate structures along two individual tracks. Select ‘Structure Multi-Copy’ from the Linear Draft toolbar, follow the prompt to select a single support structure.
Once you have selected a structure to copy, the ‘Copy Structure’ form will appear.
Enter a count of how times you want to copy the structures, define the span distance (in metres) between the structures and choose the name increments.
N.B. When inputting span length, you can determine which direction to place the structures along the track. A positive figure will place the structures up-track when viewing in a forward direction, whereas a negative figure will place the structures down-track in a forward facing direction.
To maintain relative foundation height, copy all wires, alternate stagger, copy all equipment and alternate between push off and pull off cantilevers you will need to check each of the respective boxes.
When editing the fields on the 'Copy Structure' form, you will see a marker preview of where the copied structures will be placed.
If there is no requirement to multi-copy a secondary structure, click 'Confirm'.
To copy a second structure along a 2nd track, with the defined values set from the process above, click 'Select' in the 'Secondary Structure' section of the form.
Follow the prompt in the bottom left of the screen.
Select the structure opposite to the one you have already chosen to multi-copy. 'Secondary Structure' will change from 'None Selected' to the structure that you have chosen (see below).
N.B. Preview markers will NOT appear along the second track.
Once you have defined all elements click ‘Confirm’ to accept.
The 'Structure Multi-Copy will now copy both structures. All wires and equipment specific to each structure will also be copied.
The span length will be applied exactly to the primary structure that was chosen to be multi-copied and the secondary structures will be kept directly opposite. Therefore, the span length on the secondary structures may differ slightly (e.g. if the copy is on a curve).
N.B. If you are working with a referenced track file that is made up of broken lines, then the multi-copy function will only create structure up to the end of the section that you are working on. Also, if the track for the primary structure (that you have copied) extends further than the second track, then you will find that the structure(s) at the end of the second track will not be created as there are no tracks to place the structures on.
Once the structures have been confirmed, you can then edit each individual structure using the ‘Structure Adjust’ function to define any specific requirements.