roundabout design reverse curve

[nazmirsh]

hello everyone, if anyone can help me please how to create the reverse curvature shown by yellow line in the left, to my roundabout ? thank you 🙂 

[cameronsmith89]

Are you trying to use the roundabout tool?

[nazmirsh]

Hello again , yes ! White lines are what i created with roundabout tool ,and the yellow ones or I better say the gray solid hatched, is the pavement edge i need . so I need to create a roundabout with tools so that the white lines align  with the edges of gray solid hatch. 🙂

[navya_gelli]

Hi @nazmirsh,

I wanted to check in and see if you still needed assistance, or if you found a solution to your question already? Let us know if you need further assistance by providing an update or if you have found a solution, please share it with the community so other members who may have the same question could learn from your experience.

All the best,

Navya | Community Manager

[nazmirsh]

Hello Navia thank you for your consideration. No . unfortunately , i couldn not find solution so that if i need to taper the central gap width . and also is there a way to have such a reverse curve designed ? i am not sure what is the benefit of that reverse curve at the exit though , but anyway . i need a Splitter island which is kind of constant width at first , and then get to zero at  a  length later . thank you . i got zero reply here . 

[ecfernandez]

Hi @nazmirsh, are you trying to get the roundabout tool to do the geometry of your legs as shown by the yellow lines?

I was wondering. If you got this using the roundabout tool and you have the alignments in place, why not editing them manually to make them look as desired? I think it can be quicker than playing around with roundabout  assistant

Le me know your thoughts.

Regards,

[nazmirsh]

Thank you for your reply . I couldnt figure it out to create roundabout corridor with the shape i needed ..... So , i forgot about Roundabout tool and i just created a roundabout with my own alignment i used offset alignment and connected alignment , but i dont know how to proceed further to get a unified corrdidor out of all these alignments . I would appreciate if u know a good way 

Regards

[ecfernandez]

Hi @nazmirsh, you've made good progress. All of those alignments will be your baselines. One corridor with multiple baselines should be the approach. What you need to think of is which part of your roundabout geometry every alignment is going to control. With the setup you have, I could think of the following:

 

Do you have the design profiles for your alignments? if not, start with the circulatory road, then design the legs. When you create your corridor, make your circulatory road your starting baseline. Then add the rest clicking here:

Choose the alignment, profile, and baseline, and then define the start and end stations (not always you'll need the whole thing).

For alignments like the ones I painted red and orange in the image, you'll need to stop at the edge of the circulatory roadway. That's why this step is important.

If you still have questions feel free to post them. Regards,

[navya_gelli]

Hi @nazmirsh ,

I wanted to check in and see if you saw @ecfernandez  follow up questions and you still needed assistance, or if you found a solution to your question already? Please share any available screenshots or screen recordings so the community can assist you further.

All the best,

Navya | Community Manager

[nazmirsh]

Thank you for checking , I am still working on the Solution Dear Mr. @ecfernandez kindly suggested. I will keep the update of the result soon . Best Regards

[nazmirsh]

@ecfernandez dear Fernandez , as u mentioned legs and circle was built , for orange small parts , i appreciate if u help me with . should i base line ICD or the blue line *Alignment of end of my pavement * is better to define as baseline , i dont know how to get elevations from . Thank you again .

[nazmirsh]

in fact if i can find a correct asssembly for these corners , that the lane both side can be targeted between both green lines , then i guess the problem is solved

[ecfernandez]

HI @nazmirsh, these alignments you show in your last post are slightly than those on the post I used for the sketch. But, I think you can still find a way of of that. 

Draw a feature line where I drew the red line. Make sure it has the right elevations. Then target that feature line using your circulatory roadway baseline (green arrows). You might need to slightly modify your circulatory roadway assembly, though.

Does this make sense? let me know. I hope it helps. Best regards,

[navya_gelli]

Hi @nazmirsh ,

Did the info from @ecfernandez help answer your question?

If it did, it’d be great if you could click the "Accept Solution" button so others can easily find it too.

If you’re still needing more help, feel free to share an update here. The community will be happy to jump in with any next steps to help you get where you need to be.

Best, 

Navya | Community Manager

[nazmirsh]

Hi Thank you for following it up , I found this solution easier for me . Regards . 

https://www.youtube.com/watch?v=5i3GXxltgfI&list=PLzw5mfM-mNcG6MPROieX7c9wjIUA6v0L9&index=14

[nazmirsh]

i appreciate if u could help me with the one point problem in corridor as shown below 

[Joe-Bouza]

This is a typical targeting scenario. I would agree that the roundabout tool is for concept. It needs refining on the development side to be ready for production work

[navya_gelli]

Hi @nazmirsh ,

Did the info from @Joe-Bouza  help answer your question?

If it did, it’d be great if you could click the "Accept Solution" button so others can easily find it too.

If you’re still needing more help, feel free to share an update here. The community will be happy to jump in with any next steps to help you get where you need to be.

Best, 

Navya | Community Manager