Past one surface into another with a Top or Bottom correction

[Dexterel]

The idea is simple but has a very large applications.

Think you have two channels intersecting you can past both surfaces together with a bottom correction and get a correct complete surface.

Two dikes intersecting, you can past both surfaces together with a Top correction.

You have a area you need to fill to a fix elevation, but the Existing Ground in some places is higher (than the fill elevation). Make a flat surface at that elevation over the interest area and paste it into Existing Ground with a Top correction.

No more "MinimumDistBetweenSurfaces" to insert in drawings 3D polylines to use as hide boundary's.

[peterfunkautodesk]

FYI, you can use a surface as a hide boundary for another surface without making any additional elements. The hide boundary is dynamic to any changes in the surface.

Cheers,

Peter Funk

Autodesk, Inc.

[Dexterel]

I'm still using Civil 3D 2016 and did not find any reference to the fact that you can place a surface as a hide boundary.

I guess it is possible to make a volume surface with only the positive or negative values (cut or fill only) and us it as a hide boundary.

Try I'm looking forward to upgrade to 2017.

[Dexterel]

I started a post about how to obtain this cut or fill volumes surfaces. I think it shows the necessity for the option to paste surfaces with top or bottom correction.

http://forums.autodesk.com/t5/autocad-civil-3d-forum/create-separate-surfaces-for-cut-and-fill/m-p/6...

[troma]

@Dexterel I'm going to repost your picture from the other thread. I think it illustrates this point perfectly

@peterfunkautodesk from this picture you can see that the 'hide' boundary option will not give the desired solution. AFAIK there is no way to obtain a surface from the top only or bottom only of two (or more) overlapping surfaces.

Imagine you are trying to create a surface that matches the top of Surface A and Surface B, leaving out the parts where A is below B and leaving out the part where B is below A.

Create separate surfaces for cut and fill.jpg

[Dexterel]

Any of this tools will (at least indirectly) will help a lot and make room for powerful workflows:

(all tools should be dynamical)

- cut one surface by an other surface

- add surface counters as boundary's/brakelines. Counters alones are not so useful. Maybe in surface analyst the possibility to generate new type of boundary's for example between: user counter 0 elevation and negative or positive boundary. The boundary's for the presented two colours:

2.png

- add surface boundary's as boundary's/brakelines

- add surface boundary's/brakelines/objects by layer

All this information's exists in Civil 3D its just not possible to accessed dynamically.

[Dandman01]

I need to do this for 7 surfaces, finding the lowest possible surface from the combined data. This tool would help a lot.