When adding midspan poles to an existing OH conductor, is there a way that shows how much extra conductor will be required if the midspan pole is too high? or if you want to use the same conductor, if it shows that it will break or the tension will increase?
You can select any conductor and lock the length. This will show you an increase in tension when you add a new pole for example.
You can at minimum work out where there is too much tension, and then you can reduce tension to pass the conditions and get the cable length.
If you play around with this feature you should be able to work out what you need.