Corridor from feature lines waterfall effect

[Anonymous]

Hi everyone,

I made a corridor out of 1 assembly and 2 featurelines, one as baseline and one as a target. The corridor came out completely healthy, with the right elevation, as it was for the other corridors in my file. After saving and opening the file, suddendly the corridor is half-cut, and one half is down to  z=0.000 (check the image out). I didn't change anything in the corridor parameters, and after fews attempts of recreating it, it went back to normal. After an hour of work it went down again, just like when you don't match the allignmnent and profile lenghts on a "traditional" corridor. Anyone can please help?

some infos:

-the 2 feature lines are not automatically generated from the others corridors but derivated from 3dpolylines;

-every point of the feature lines have the correct z (no z=0 grips);

-the 2 FL are not overlapping and have no points in common;

-the assembly is simply made of a "LinkWidthAndSlope" subassembly;

-the target FL is set both as width target and slope target.

thank you

[Wojtek_Garczewski]

Hi @Anonymous 

Thank you for posting us. 

Do you use sites to store your feature lines and alignments? If so, can you try to move your feature lines and alignments to <None>.  

Is it possible to share your drawing with us? It would be helpful in further troubleshoot your issue.

Thanks,
Wojtek

[Anonymous]

Thank you fo your kind reply.

I didn't use the "sites" to group elements, and I always set them to <none> because I've already had some issues with that. Actually I could get over the problem mentioned in the topic: it was linked to the grey triangles in the first column into the 'grading elevation editor', that are automatically created (and very annoying).

As I couldn't edit them directly I exploded the feature line into a 3dpolyline, and deleted some problematic grips born on their own. Then I turned the 3dpolyline into a FL again, and it worked.

(Eventually I don't understand why the problem was going back and forth, I mean: either it's a problem or it's not, why does it work well for a while and then it goes crazy?)

To sum it up, I needed to use a feature line generated by a corridor to set the baseline for another corridor, but I can't do it unless I turn the "automatically generated FL" into a normal FL (by exploding into a 3dpoly and creating a new FL). On this transition some grips go crazy and create the grey triangles of the grading elevation editor. Is there a better way to build a corridor on another corridor without running into these troubles?

Unfortunally I can't share my file.

Thank you very much

[Joe-Bouza]

I suspect the original 3dpoly line was the culprit. How was it created? did it come from outside your office?

When I change drawing objects into Feature lines I like to MAPCLEAN them first. if they came from out side our office I do same and WBLOCK the selected before inserting to our files.

call me neurotic but it helps (lol)