Issue Description
You want to create a line type as a symbol to represent aspects of your project, such as water pipes, that you don't want to model. But you need the line type to work with multiple scales.
Solution
1. Set the scale to 1:1
2. Draw the line at true size using the line circle or polyline tool
3. Copy the text and go to the Options > Element Attributes > Lines.
4. Select New...
5. Select Symbol type > Name the line type.
6. Select > Paste to Pattern.
Now we need to edit the Dash and the Gap values. The dash value is the length of your created line from start to finish.
The Gap is the distance before the next instance of the line begins again.
Select Scale with Plan (Model Size) to make the line scalable