Skewed Corridor Sections

[andrew_milford]

There are often times where the design of a road requires the corridor to stop at an angle other than that perpendicular to the baseline (i.e. at bridge locations).

Civil 3D currently has no way to skew a corridor region, and we must either stop the region short and fill in with feature lines, or extend the region beyond the skew line, extract the feature lines and trim. In either case, this results in an untidy corridor model.

It would be ideal to have an option to create a skewed corridor region. This can be partly achieved with a custom subassembly (see second image), but this is a bit of a hack, and does not actually skew the links at the desired skew angle (only the strings)

 

[callejatemoc]

Add grip points at the end of each corridor region as in the sample lines to generate non-orthogonal endings.

[joantopo]

We can do this with a custom subassembly (auxiliary subassembly with an offset target):

http://forums.autodesk.com/t5/autocad-civil-3d-infra-geo/genial-muestrear-obra-lineal-en-diagonal/m-...

[callejatemoc]

Hola joantopo si conozco ese metodo, me refiero a que seria muy bueno que agregaran grip points a los extremos de las regiones que te permitan manipularlas de manera rapida tal como en las samplelines.

[Dexterel]

I don't think a custom subassembly will do the job joantopo. Imagine you have a full road section and you need to cut everything, lane, gutter, curb and sidewalk.

Maybe a more general solution will be to be able to cut parts of an corridor, to be able to add a hide boundary to corridors.

[doni49]

I think the idea of a HIDE BOUNDARY could actually work pretty well.  The corridor would be processed as normal.  Then anything within the hide boundary would be removed from the corridor.

I can definitely think of several projects in which that would have been very helpful for me.

[joantopo]

The trick to not define several regions is using 2 offset targets for each subassembly.

The first offset target is that diagonal and the second one is an offset alignment.

It is very important that the default width in each subassembly was 0. 

[joantopo]

Hide boundary is not valid if you compute shapes (it is only for surfaces).

I have to create a new idea here about intelligent assemblies where the subassembly can recalculate (re-shape) itself by a defined border line which cuts the assembly vertically.

Then, each subassembly gets new shapes..links are cut, etc...

Subasssembly Studio does this.

[Dexterel]

I think the shape is not a problem. Think if you make a sample line and tilt it, same as AFTER picture above. In the sample line profile you see the shape. So Civil 3D knows how the shape should look there. Please tell me if I don't make any sense (so I can try to explain better).

[joantopo]

I quote your sentence:

"Civil 3D currently has no way to skew a corridor region"

And this?

But I agree with you.... in my workflow is a tedius task  😉

[doni49]

I'm with @joantopo,

Although it would be nice if there were a simpler way, I have been able to do this (albeit using a tedious workflow).

I created an alignment across the corridor representing the skewed end of the corridor.   Then the links within that range used conditionals to see if that alignment was found before the FL was to be placed.  If not, then it allowed the creation of the FL.  This resulted in a skewed ending.

[joantopo]

A virtue or a powerful and useful utility about skewed corridor section would be also for this case: (setup custom subassembly).

Imagine that you have your main road (main alignment) and your entrance ramp alignment.

In this case, I must to create a setup corridor about the main road (with extra-width) to get its profile surface. Then I use this profile as the layout profile for my entrance ramp alignment.

Instead, if we were able to project skewed corridor sections (my setup custom subassembly) from the entrance ramp alignment to the main alignment (which is an offset target), we didn´t need that setup corridor.

The skewed angle would be according to the perpendicular to the offset target, this is the key.

[callejatemoc]

hello is similar to my idea:

https://forums.autodesk.com/t5/autocad-civil-3d-ideas/corridor-region-grips/idi-p/6578701

[snoyolar_ddscad]

VIDEO

https://knowledge.autodesk.com/community/article/76451

https://www.youtube.com/watch?v=aoe_0QDay6E&feature=youtu.be

SIMON NOYOLA

Simon Noyola Rivero
Application Engineer
Down to Earth Technologies, Inc.
Autodesk Authorized Consultant
Subject Matter Expert Civil&Map 
Civil 3D Country kit  development
para: Mexico, Central America, Caribbean & Venezuela
https://www.youtube.com/user/snoyolar

[KPerison]

Yes, a thousand times yes!!!

How about an extra tab in the Corridor Properties dialog (similar to the Corridor Surface Boundary function) that would simply allow you to Draw a polyline boundary that will create a "Vertical Cut-Off" and terminate/trim out your corridor as a Hide or Show boundary.

No more 200 step work arounds, just start/continue your main road region before/past your skew point and .. Chop it off!!

or......

Skip the extra tab and add the option to enable your Corridor Surface Boundary as a "Vertical-Cut-off".

There, problem solved by a simple check box. 🙂

[joantopo]

In my opinion, Civil 3D should have capabilities to cut a subassembly and regenerate the correct for the corridor section.

Don´t confuse offset target with cutting a subassembly.

For example, imagine if a polyline or FL crosses trhough a complex subassembly such as a curb and gutter. 

Currently, civil+plus with SaS (Subassembly Studio) can do this with its subassemblies.

[TimYarris]

This idea is under consideration for a future version of Civil 3D. Please visit the Autodesk Civil Infrastructure Product Roadmap for details and to vote for this idea to indicate its importance relative to other items that are under consideration.

[alan676415]

Hallo,

Corridor Frequency running perpendicular only, if Autodesk can provide hide option like in the surface or provide a "clip" option is better.

Regards

Thomas Benhur

[alan676415]

Please try to get an option that Hide or Clip Corridor partially in the inclined angle.

This will be a better option to work with Bridge.

Regards

Thomas Benhur

[TimYarris]

This idea is under consideration for a future version of Civil 3D. Please visit the Autodesk Civil Infrastructure Product Roadmap for details and to vote for this idea to indicate its importance relative to other items that are under consideration.

[ThomasBHansen_]

After watching Jeff Bartels newest video on Youtube on skewed Corridors I was so upset that I had to come here and create a post, and I`m somewhat glad to see that you had already made a post just as I would have myself. The somewhat part is that i see the post is from 2016.  As a landscape architect I use corridor for many things, and I always end up with skewed endings that results in manual time consuming targeting work or manipulating 3d-solids to match my desire.

Grip points at the end of a corridor would save A LOT OF TIME!