AutoCAD Civil 3D General

Reply
*Expert Elite*
jmayo
Posts: 2,699
Registered: ‎11-13-2006
Message 11 of 12 (62 Views)

Re: Surface "Blending" Issues

11-20-2012 06:56 AM in reply to: sumanthap

You may have better luck getting help if you post the file. The method you are using works best in large open areas with relative uniform slopes. It is not going to work well if you are crossing walls, channels or any major surface breakline areas unless both surfaces share a common closed boundary. The boundary must be identical at every vertex x,y and z. 

John Mayo, PE
IDSP 2014
Win 7 64, Xeon ES165@3.2Ghz,
64 GB RAM, Quadro K4000 (x2)
*Expert Elite*
troma
Posts: 2,519
Registered: ‎05-21-2008
Message 12 of 12 (61 Views)

Re: Surface "Blending" Issues

11-20-2012 07:05 AM in reply to: sumanthap

OK, I'm familiar with streams, just not the technical terminology.  I think you've explained it pretty well.

 

I think you'll have to get into some pretty detailed design.  I would use feature lines to define the top of each basin (sort of in a circle for each one) and another one for the bottom.  Then another two or three running down the length, crossing each basin to define your thalweg.  Another couple of feature lines running down each sidie to define the edges.

You could start off by using the elevations from surface command to pick up the existing elevations at the points where you're tying into the existing stream.  Then edit the middle parts.  The elevation editor shows you the % grade of each segment of the feature line.

 

You could add this to the rest of your proposed surface, or build it seperately as a 'Proposed Streambed" surface.  Then paste that in to your combined surface at the end.


Credit where credit is due! Give kudos or accept as solution whenever you can.

You are not logged in.

Log into access your profile, ask and answer questions, share ideas and more. Haven't signed up yet? Register

Announcements
Are you familiar with the Autodesk Expert Elites? The Expert Elite program is made up of customers that help other customers by sharing knowledge and exemplifying an engaging style of collaboration. To learn more, please visit our Expert Elite website.

Need installation help?

Start with some of our most frequented solutions to get help installing your software.

Ask the Community


Civil 3D Exchange Apps

Created by the community for the community, Autodesk Exchange Apps for AutoCAD Civil 3D helps you achieve greater speed, accuracy, and automation from concept to manufacturing.

Connect with Civil 3D

Twitter

Facebook

Blogs