# Creating aligments-profiles-corridors from Polylines3D

**URL:** <https://forum.dynamobim.com/t/creating-aligments-profiles-corridors-from-polylines3d/61999>\
**Category:** Civil 3D\
**Created:** [March 23, 2021, 11:34am UTC](https://forum.dynamobim.com/t/creating-aligments-profiles-corridors-from-polylines3d/61999 "2021-03-23T11:34:49Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![javiermend](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/javiermend/32/84371_2.png) [@javiermend](https://forum.dynamobim.com/u/javiermend)\
**Post date:** [March 23, 2021, 11:34am UTC](https://forum.dynamobim.com/t/creating-aligments-profiles-corridors-from-polylines3d/61999/1 "2021-03-23T11:34:49Z")

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Hello i wonder if is there a node that transform a Poly3D into a profile.

The target is to generate corridors from poly3d.

1. I transform a Poly3D into Poly2D ( with Civil3D commands, is there a node for that in dynamo?) ,
2. so that it is possible to get an aligment associated by AlignmentExtensions.CreateAlignmentByPolyline node.
3. Once you get the aligment, I would like to associate the poly3d geometry as the profile of the aligment.  
The target is to generate corridors from poly3d.

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/a/8/a868b9c5efad4d778520e4322c86fbca02f4836b.png)

Thank you very much.

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**Author:** ![javiermend](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/javiermend/32/84371_2.png) [@javiermend](https://forum.dynamobim.com/u/javiermend)\
**Post date:** [March 23, 2021, 7:15pm UTC](https://forum.dynamobim.com/t/creating-aligments-profiles-corridors-from-polylines3d/61999/2 "2021-03-23T19:15:55Z")

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> **[Dynamo for Civil 3D - Corridor by Polyline 3D | AutoCAD 2020 | Autodesk...](https://knowledge.autodesk.com/support/autocad/learn-explore/caas/screencast/Main/Details/aef901c7-678a-4c35-9ead-897991badb2b.html)**
>
> This video demonstrates how to create a corridor in Civil 3D starting from a polyline 3d using Python

Hello @Paolo_Emilio_Serra1 hope you are fine! Maybe i miss something, does this node from video exist in the package?  
If I want to create this node, would the inputs be polilyne3D? And outputs alignment & Profile ? and then use the package’s corridor formation nodes?

Thank you

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**Author:** ![mzjensen](https://avatars.discourse-cdn.com/v4/letter/m/b77776/32.png) [@mzjensen](https://forum.dynamobim.com/u/mzjensen)\
**Post date:** [March 24, 2021, 3:19am UTC](https://forum.dynamobim.com/t/creating-aligments-profiles-corridors-from-polylines3d/61999/3 "2021-03-24T03:19:24Z")

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> [@javiermend](#):
>
> is there a node that transform a Poly3D into a profile.

Not one node. It will take a couple.

[AlignmentProfileFromPoly3D.dwg](https://forum.dynamobim.com/uploads/short-url/yMfDyIEdb5qHclNrxeDEhlHgNk4.dwg) (943.6 KB)  
[AlignmentProfileFromPoly3D.dyn](https://forum.dynamobim.com/uploads/short-url/6ouueWdqouhJ1KWbe4eEIotD90v.dyn) (84.3 KB)

![ProfileExample](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/7/e/7e2da9b3ad9483b1678be7e9d9a0923f501f433e.gif)

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<div class="post-metadata">

**Author:** ![javiermend](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/javiermend/32/84371_2.png) [@javiermend](https://forum.dynamobim.com/u/javiermend)\
**Post date:** [March 24, 2021, 8:19am UTC](https://forum.dynamobim.com/t/creating-aligments-profiles-corridors-from-polylines3d/61999/4 "2021-03-24T08:19:30Z")

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Thank you @zachri.jensen , I’ll take a look to this. I see, there is a step before , creating geometry in dynamo in order to get inputs to other nodes.