AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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E_Shaft
Posts: 15
Registered: ‎12-11-2012
Message 1 of 5 (605 Views)
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Merging corridor surfaces that run parallel to each other

605 Views, 4 Replies
12-11-2012 02:59 PM

How do I merge 2 corridor surfaces that are running parallel to each other. Due to this being an overlay project the CL will stay the same just raised 4.5" from existing CL and the existing cross slope varies which we are matching until you hit the sawcut. We are not ripping out or milling any apshalt, it is strictly an overlay of the exisitng with 4.5" of new asphalt. We are saw cutting 2' either side of theedge of paveement and matching in with proposed.  

 

 I have created a feature line over the existing cl then raised it the required height. the cl has been offset 10 both sides to create my left and right shoulder alignments,  I then created a left and right shoulder corridor assembly which has supplied 2 seperate surfaces. I now would like to merge the 2 surfaces using the raised cl feature line as a break line to create the final proposed surface. I would prefer not to have to create feature lines from my corridor and create a new surface because i would like to take asphalt and subgrade quantaties at the end with out having to hand calc but will if need be.

 

any help or ideas would be much appreciated.

If you have done too much work to go back and start with a different approach, and this is simply a question of merging surfaces, you can paste them together.  Make a new surface and then paste in the two you have, to make one large surface.  You can also add other data afterwards (such as an additional feature line).

Valued Mentor
fcernst
Posts: 1,157
Registered: ‎01-07-2011
Message 2 of 5 (599 Views)

Re: Merging corridor surfaces that run parallel to each other

12-11-2012 04:10 PM in reply to: E_Shaft

It would be really helpful if you posted a picture, however it sounds like you can do this with one Corridor and one Corridor surface.

 

Two Offset Assemblies at your sawcuts and Links up to your CL crown (crown sampled from EG and raised 4.5")

 

 

Fred Ernst, PE
C3D 2015 SP2
Ernst Engineering
www.ernstengineering.com
*Expert Elite*
sboon
Posts: 2,225
Registered: ‎11-08-2005
Message 3 of 5 (593 Views)

Re: Merging corridor surfaces that run parallel to each other

12-11-2012 04:41 PM in reply to: E_Shaft

Take a look at the help files for the OverlayWiden subassemblies.  Based on your description it sounds like they will do exactly what you want.

Valued Contributor
tony1978
Posts: 92
Registered: ‎02-01-2007
Message 4 of 5 (579 Views)

Re: Merging corridor surfaces that run parallel to each other

12-11-2012 08:49 PM in reply to: sboon

An image would be helpful so we can better understand what you are tring to achieve. Sounds to me that you are just tieing down to an existing corridor surface but with a different shoulder height and location. Can you not just create a volume surface based off the 2 road surface? Then maybe run cross sections to see volume cut/fill per every 50'. It's my understanding that the existing corridor is acting as you existing surface. 

 

 

Tony

CAD Manager

Civil 3D 2012/2013

Win 7 64Bit, 24gb Ram

www.tonyscivil3dworld.blogspot.com

 

*Expert Elite*
troma
Posts: 2,525
Registered: ‎05-21-2008
Message 5 of 5 (558 Views)

Re: Merging corridor surfaces that run parallel to each other

12-12-2012 07:36 AM in reply to: tony1978

If you have done too much work to go back and start with a different approach, and this is simply a question of merging surfaces, you can paste them together.  Make a new surface and then paste in the two you have, to make one large surface.  You can also add other data afterwards (such as an additional feature line).


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