I have a question on geometry edits in ORD 10.12.02.04 (2022R3).
I know that OpenRoads’ design intent and rules were intended to be timesavers. But I’ve reached a point where – after trying to make extremely simple edits to a horizontal geometry – they are proving anything but. I freely admit user error is most likely to blame. What I’m doing should take minutes. Yet I have not been able to accomplish the task in a couple hours. Are you up for a challenge? Try and make the edits I’m requesting in this file and please tell me how to accomplish it. I’ve viewed many videos on how to modify OpenRoads geometry to no avail.
The attached DGN has a single alignment, “RampTest”. It has all simple curves, no spirals. There are four curves; I’m simply trying to modify the radii of the southerly two… and that’s it! No moving PIs, nothing else. The southernmost curve with PI 13+15.92 - I’ll call it Curve 1 - has a radius of 9046.7020’, or 38 minutes. I want to modify it to be 9549.2966’, or 36 minutes. The next curve to the north with current PI 27+47.75 – let’s call it Curve 2 - has a radius of 6875.4935’, or 50 minutes. I want to modify it to be 7473.3625’, or 46 minutes. I want the ending station to be the same, so my start station will be 9+xx.xx.
I can readily modify the radius of Curve 2. Type in a new radius, it updates, great. But that’s all I can do.
Curve 1? That’s trickier since it’s an arc at the end of an alignment. Back when, I’d have added a PI off the geometry end, modified the radius, then deleted the additional tangent. There are PI-based commands in OpenRoads to create geometry, but not modify PIs (so far as I know). So, as holding the PI location means the curve will get flatter, I need to append the geometry off the south end so it can lengthen. And that I’ve done a number of times, with a “dumb” regular line and also a geometry line created in OpenRoads. I’ve tried to do so by snapping, and not snapping. Whatever the method to create the tangent, I then append the complex geometry with that line, then try to change the radius. When I do that, it doesn’t simply change the radius of Curve 1. It also changes the PI location… the PI moves. What’s really weird is that changing the radius of Curve 1 also moves the PI of not just Curve 1, but it also moves the PI of Curve *2* as well!
???
If I start by changing the radius of Curve 1 before doing anything else, it will still move *both* the PIs of Curves 1 and 2.
If there is a rule at play, I cannot figure it out, cannot disable it, and it’s driving me crazy.
On a hunch, I created new geometry myself in this file, another test alignment. I was able to modify curve radii and not a single PI moved.
As far as I know, this geometry originally came from an SS2 ALG a while back (I'm not 100% sure and don't have access to that ALG). I have no desire to re-create the geometry. We have sheet cuts and a profile based on it already (the changes are very minor, to where modifying two named boundaries manually is not a big deal) so re-creating it would present other issues.
I want to like this program. Please, help me eat crow... tell me how make these edits. What am I doing wrong?
Thanks for any and all information!
communities.bentley.com/.../RampTest.dgn
