topic Re: Dynamic offset profile and widening in Civil 3D Forum

Dynamic offset profile and widening

Alessandro1985 — Wed, 12 Dec 2018 01:02:53 GMT

Hi all,
I have a problem with the cross slope using an offset alignment with dynamic profile plus a widening, I've set the slope at 3% from the crown, everything works great when there is no station on the transition zone as the image attached.
If I add a station on the transition zone, the slope became incorrect.
Have I done anything wrong? Is an incorrect workflow?
Thanks.

Re: Dynamic offset profile and widening

ytzvib — Wed, 12 Dec 2018 02:30:46 GMT

Hi,

I recreated your workflow and had no issue. Can you please post the drawing.

Thanks

Re: Dynamic offset profile and widening

Alessandro1985 — Wed, 12 Dec 2018 03:42:51 GMT

Sure

Re: Dynamic offset profile and widening

ytzvib — Wed, 12 Dec 2018 06:13:23 GMT

Hi,

The reason why it was not showing right is that your profile probably is not a 3% slope at that point.

An easier way to do this model would be to keep the offset alignment as the width target and to take away the profile as the elevation target. Set the slope of -3% on the subbassembly on the properties palette and then you would not have to make an offset profile. This is also dynamic because whenever you update the main profile and then you rebuild the corridor it will make sure to keep the 3% slope.

Re: Dynamic offset profile and widening

Alessandro1985 — Wed, 12 Dec 2018 17:31:43 GMT

Hi Thanks to reply,
I know that way and it works perfectly, but the offset profile in some situation fit better especially when you need to tie in regions with different slope.
I don't think the problem is the slope of the main profile because the offset profile is dynamically connected so should follow the main profile whatever slope it has.

Re: Dynamic offset profile and widening

ytzvib — Wed, 12 Dec 2018 17:45:23 GMT

Your profile has the same elevations as the corridor so the issue is in the profile not the corridor.

Re: Dynamic offset profile and widening

Anonymous — Wed, 12 Dec 2018 19:45:47 GMT

Yes, sure
What I mean is the problem is in the offset profile that does not follow exactly the main profile.

Re: Dynamic offset profile and widening

monika.gor — Wed, 05 Feb 2020 09:59:30 GMT

Hello,

Has anyone resolved the issue of messed up profile on dynamic offset profile ? Once I add widening the profile became ruined. This happen randomly. Sometimes is correct sometimes is not. This issue is ruining the whole idea of dynamic offset aligment and connected alignment for me.

I attached the example of incorrect profile.