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Cut and Fill Volumes

17 REPLIES 17
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Message 1 of 18
trynders
1643 Views, 17 Replies

Cut and Fill Volumes

I am working on a large park project.  I have a proposed and existing surface.  I have created a volume surface to show elevation banding with cut and fill ranges.  I need to create a drawing for someone who doesn't have civil 3d showing all the "cut" areas.  They really want a boundary of hatch.  What is the best way to do this after I change my analysis to -30 feet cut to 0 feet cut.

17 REPLIES 17
Message 2 of 18
trynders
in reply to: trynders

Basically I want to generate a boundary polyline from the elevation analysis I see for all the cut areas.

Message 3 of 18
troma
in reply to: trynders

I would extract the surface boundary and the 0 contour, and trim them up to each other. This should leave you with a polyline outlining the cut area.

Mark Green

Working on Civil 3D in Canada

Message 4 of 18
trynders
in reply to: trynders

Im looking for something a bit more quicker.  There are hundreds of areas (pockets) of grading changes.  That would take me days.

Message 5 of 18
troma
in reply to: trynders

Put the contour interval to 1000, or higher. Whatever you need to make sure that the only contour displayed is the 0 contour.
Then set the surface to only display the boundary and the major contours.
Then extract all.

Mark Green

Working on Civil 3D in Canada

Message 6 of 18
fcernst
in reply to: trynders

 

 

Capture.JPG



Fred Ernst, PE
C3D 2024
Ernst Engineering
www.ernstengineering.com
Message 7 of 18
trynders
in reply to: trynders

okay... Thanks... I'm on my way.  What is the best way to extract these lines?  Can I landxml out?  explode the surface and wblock the lines out?

Message 8 of 18
trynders
in reply to: trynders

This is what I have so far...

Message 9 of 18
ericcollins6932
in reply to: trynders

exploding works well, or save to vanilla autocad. I would have used a user contour.

Eric Collins, P.Tech.(Eng.)

Win 10
Intel i7 9700 @ 3 GHz
16 GB RAM
Civil 3D 2019
Message 10 of 18
troma
in reply to: trynders

Click on the surface.
On the contextual ribbon tab you will see the option to extract objects from the surface.

Mark Green

Working on Civil 3D in Canada

Message 11 of 18
trynders
in reply to: troma

Thank you very much!

Message 12 of 18
fcernst
in reply to: trynders

...Basically I want to generate a boundary polyline from the elevation analysis I see for all the cut areas...

 

Oh, I just did what you told me to do.... Extracted the Elevation solids from the elevation analysis and shrinkwrapped them with polylines...About 17 seconds from start to finish.

 

 



Fred Ernst, PE
C3D 2024
Ernst Engineering
www.ernstengineering.com
Message 13 of 18
trynders
in reply to: trynders

But what about holes in the surface when you shrink wrap?  See attachemnt

Message 14 of 18
fcernst
in reply to: trynders

Oh..I would shrinkwrap those Fill areas first then to get polylines in there ...Right?



Fred Ernst, PE
C3D 2024
Ernst Engineering
www.ernstengineering.com
Message 15 of 18
ericcollins6932
in reply to: trynders

Are those areas of fill? You only want to illustrate areas of cut. Holes in fill areas would be nice, assuming my assumptions are valid.

Eric Collins, P.Tech.(Eng.)

Win 10
Intel i7 9700 @ 3 GHz
16 GB RAM
Civil 3D 2019
Message 16 of 18
trynders
in reply to: ericcollins6932

The situation is this.  We are re-grading an existing park.  I told the volume surface to show elevation of -100 (which is way plenty) to elevation 0 with 1 band color.  I was asked to create a drawing for a non-civil 3d user to see just the areas of cut.  So yes, the areas of no color in my sample is fill areas.  I believe the user would like a closed polyline around the interior shapes also for hatching purposes.

Message 17 of 18
fcernst
in reply to: trynders

10-4...

 

If you do a range from 0 to +100 those holes fill with Solids, right?



Fred Ernst, PE
C3D 2024
Ernst Engineering
www.ernstengineering.com
Message 18 of 18
fcernst
in reply to: trynders

Are we making headway?

 

Try to do this in under 60 seconds from start to finish:

 

-Wrap the Fill solids from your analysis, then:

-Wrap the Cut solids from the analysis.



Fred Ernst, PE
C3D 2024
Ernst Engineering
www.ernstengineering.com

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