AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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Mentor
Nik-D
Posts: 224
Registered: ‎09-10-2012
Message 1 of 15 (324 Views)
Accepted Solution

XREF'd corridor grading

324 Views, 14 Replies
03-20-2014 04:34 AM

Hi all

 

Is it possible to grade from a corridor that has been XREF'd into a drawing. I also want the grading to be dynamic so that if the corridor changes, when i relaod the XREF, the grading will update.

 

Can this be done??

 

Thanks in advance

Here's a link to a quick Video of the process. The design is poor but the workflow is there.

 

https://www.dropbox.com/s/851erqmqn6okmes/Link%20to%20Xref%20Target.mp4

I think the answer to your question is: if a dynamic FL from corridor can be made through an xref?

 

However, if if you create a dynamic offset alignment that corresponds to your corridor grading point, then clearly the answer is yes.

 

Make a surface profile on the offset alignment, DS the alignment and profile to the grading file, create a dyno FL from alignment and grade away.

 

if the corridor changes, so will the surface and surface profile and the the FL you grade from.

Valued Contributor
mconway
Posts: 62
Registered: ‎03-28-2012
Message 2 of 15 (296 Views)

Re: XREF'd corridor grading

03-20-2014 08:09 AM in reply to: Nik-D

The result that you want is possible. Your workflow is out of order. What you need to do is create your Corridor Surface in the Corridor Drawing, Then Data Share (not xref) the Corridor Surface with a Data Shortcut into your BIM Model or other drawings.

 

The Data Shared Corridor Surface will be able to be Styled, Labeled, and Pasted together with other Surfaces just like a normal surface and it will update dynamically with changes to the Corridor.

 

If you need direction on Data Sharing, I'm here to help. 

At your service,
Mark A. Conway
Director - Applied Technology
Autodesk Certified Instructor
AutoCAD & Civil 3D 2014 Certified Professional
Infrastructure Design Suite BIM Specialist
Follow me on Twitter @CADventurer





Valued Contributor
mconway
Posts: 62
Registered: ‎03-28-2012
Message 3 of 15 (292 Views)

Re: XREF'd corridor grading

03-20-2014 08:41 AM in reply to: mconway

Below is a link to a Corridor Surface Data Shortcuts workflow I wrote up to help you.

 

https://www.dropbox.com/s/05fy1runnoeh10s/Create%20a%20Corridor%20Surface%20Data%20Shortcut.docx

At your service,
Mark A. Conway
Director - Applied Technology
Autodesk Certified Instructor
AutoCAD & Civil 3D 2014 Certified Professional
Infrastructure Design Suite BIM Specialist
Follow me on Twitter @CADventurer





Mentor
Nik-D
Posts: 224
Registered: ‎09-10-2012
Message 4 of 15 (261 Views)

Re: XREF'd corridor grading

03-21-2014 03:36 AM in reply to: mconway
Hi Mark Thanks for your reply. I know that I can share corridor surfaces through DREF however in this particular case I have a model that is heavy. I have five roads going East West and five roads going North South in a grid shape. Imagine that the outer roads form a square and all the other roads extend to the edges of that square. I have all the junctions to add and road stubs for future access to sub plots. The roads are on embankments above the final grade and i have to grade down from the corridor to the final grade surface. Problems occur at the junctions where the daylight lines overlap each other due to the radius of the curb returns and the distance and grade of the daylight links. Because i have problems with overlapping links at corridor junctions I was using infill gradings. In the original master drawing i was using the drawing becomes unstable and the gradings keep disappearing or the surfaces become corrupted. I was experimenting with the idea of putting a certain number of corridors into individual drawings and DREF the alignments and final grade surface. Once the corridors are complete I could XREF all corridors to a final drawing to give a layout drawing and thus keep the file size of the final drawing small but as usual with my mad ideas there are hiccups along the way. So the question is still can i grade from an XREF'd corridor to a DREF'd surface and if so how?
Valued Contributor
mconway
Posts: 62
Registered: ‎03-28-2012
Message 5 of 15 (249 Views)

Re: XREF'd corridor grading

03-21-2014 07:20 AM in reply to: Nik-D

My aplologies. I see your dilema. I have done some experimenting in 2014 and 2015, and unfortunately it appeares that although I can create an Alignment or Parcel with a polyline through an Xref. You cannot access a Feature Line to create Grading Objects in this way. HOWEVER!!

 

What you might consider (since your in a relativly small area (@ curb curves)) is

 

1. Create  a Feature Line from Corridor (in your Source Drawing) make sure it's set to Dynamic

2. Creating an Alignment at where you calculate your desired Slope to be. (In your Design Drawing)

3 .Create a Profile of the Desired Target Surface from that Alignment.

4. Use an Assembly with a Generic > Link Width and Elevation.

5. Target the Auto Feature Line through the XREF. (This will only work in 2014.)

At your service,
Mark A. Conway
Director - Applied Technology
Autodesk Certified Instructor
AutoCAD & Civil 3D 2014 Certified Professional
Infrastructure Design Suite BIM Specialist
Follow me on Twitter @CADventurer





Valued Contributor
mconway
Posts: 62
Registered: ‎03-28-2012
Message 6 of 15 (244 Views)

Re: XREF'd corridor grading

03-21-2014 07:49 AM in reply to: mconway

Here's a link to a quick Video of the process. The design is poor but the workflow is there.

 

https://www.dropbox.com/s/851erqmqn6okmes/Link%20to%20Xref%20Target.mp4

At your service,
Mark A. Conway
Director - Applied Technology
Autodesk Certified Instructor
AutoCAD & Civil 3D 2014 Certified Professional
Infrastructure Design Suite BIM Specialist
Follow me on Twitter @CADventurer





Mentor
Nik-D
Posts: 224
Registered: ‎09-10-2012
Message 7 of 15 (232 Views)

Re: XREF'd corridor grading

03-22-2014 04:47 AM in reply to: mconway
Hi Mark Its not quite what I was looking for but probably the best workaround that there is. It took me a while to figure out that you have to select the Auto Feature Line using a crossing window selection. I was hoping that the feature line created in the corridor prior to XREFing could be used as a feature line in the XREF drawing. I still do not understand why AutoDesk do not allow DREF of corridors with restricted parameters the same as surfaces. So that we could modify code sets and feature lines of the DREF corridor but not modify the extents etc. Also it would be nice in the future to see DREF subassembly so that large drawings that have to be broken down don't have to keep recreating and copying unnecessary objects. Anyway that's a gripe for another day. Thanks for your help. Nik
*Expert Elite*
Joe-Bouza
Posts: 5,183
Registered: ‎12-15-2008
Message 8 of 15 (222 Views)

Re: XREF'd corridor grading

03-22-2014 06:03 AM in reply to: Nik-D

I think the answer to your question is: if a dynamic FL from corridor can be made through an xref?

 

However, if if you create a dynamic offset alignment that corresponds to your corridor grading point, then clearly the answer is yes.

 

Make a surface profile on the offset alignment, DS the alignment and profile to the grading file, create a dyno FL from alignment and grade away.

 

if the corridor changes, so will the surface and surface profile and the the FL you grade from.

Thank you

Joseph D. Bouza, P.E. (one of 'THOSE' People) Civil 3D 2012 & 2013
HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram


Note: Its all Resistentialism, so keep calm and carry on

64 Bit Win7 OS
Valued Contributor
mconway
Posts: 62
Registered: ‎03-28-2012
Message 9 of 15 (207 Views)

Re: XREF'd corridor grading

03-22-2014 08:31 AM in reply to: Joe-Bouza

NIK-D,

  Joe's solution is a much better workflow than what I came up with. I forgot that you could make a Feature Line from a Dref Alignment.

 

I was glad to help, but, Joe's workflow should be marked as the Solution. It wll give you exactly what you need.

 

Joe, Thanks for the lesson. I am now a better User. 

 

At your service,
Mark A. Conway
Director - Applied Technology
Autodesk Certified Instructor
AutoCAD & Civil 3D 2014 Certified Professional
Infrastructure Design Suite BIM Specialist
Follow me on Twitter @CADventurer





Valued Contributor
mconway
Posts: 62
Registered: ‎03-28-2012
Message 10 of 15 (203 Views)

Re: XREF'd corridor grading

03-22-2014 08:38 AM in reply to: mconway
and Bonus!! You don't even need to have the HEAVY Corridor Xrefed in, because the Dref Offset Alignment is all you need!!

Betterer and Betterer
At your service,
Mark A. Conway
Director - Applied Technology
Autodesk Certified Instructor
AutoCAD & Civil 3D 2014 Certified Professional
Infrastructure Design Suite BIM Specialist
Follow me on Twitter @CADventurer





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