I am trying to place or insert a vertical PI in a profile. However, InRoads is automatically placing a curve. How can I keep this from happening?
Check to make sure that you do not have Design Criteria toggled on by going to Geometry > Vertical Curve Set > Design Criteria. This command controls whether the behavior of Add Vertical PI / Insert Vertical PI is modified. When checked off then the Add Vertical PI / Insert Vertical PI command behaves as always, only lines are added to the alignment. When checked on the Add Vertical PI / Insert Vertical PI command behavior changes. The software looks up the minimum radius and optional spiral length from the Vertical Design Checks.txt file.