AutoCAD Civil 3D :: Copy TIN Surface
Aug 31, 2012
I've been wondering if there´s an easy way to copy a TIN surface or at least an easier way than what I'm currently doing. What I do is:
- Exctract objects > points/contours depending on the surface and border
- Create a new TIN surface
- Definition of the new surface > add point group or add contours
- Convert the 3D poly of the border to a 2D poly
- Definition > add border
I'm looking for an easier way that would save me the trouble of isolating the points or contous because my drawing has too much data and its very time consuming. Isn't there a command that lets me copy a TIN surface which creates another with the same objects as definitions?
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Sep 13, 2010
Can I do that? I want to import a surface from another drawing to my design drawing.
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Jun 14, 2012
I tried usign the xml export and import it on the other file, the surface comes in fine but the break lines do not come in.
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Sep 6, 2012
In 2012 I can no long grip a spot elevation RC copy. It just ignores it an moves it to the new location.
Is there a setting I might have to re-set?
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Mar 20, 2013
You can copy both the surface and the original (in this case contour polylines) data or only the surface. In both cases paste operation results into a copy of both data and surface.
Ok, But when paste and rebuild, the distance from original base point and destination point is applied in turn to the surface itself. Maybe it is a BUG ?
Civil 3D (2013)
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Dec 2, 2011
I often have to do storm pond surfaces that (for the purposes of planning) are flat on the bottom. These surfaces are created from a combination of survey data and grading groups and the tin of these surfaces is perfectably acceptable. However, when contours are shown, the flat bottom is shown with contours jig-jagging all over the place.
The attached image shows a comparison of the same pond. The top was created with survey data and grading groups; the bottom was created using contour data only. The generated surface on the top shows the bottom contour going in different directions and has parts where the an expected contour is missing.
How to correct/manipulate the surface to show a proper flat surface?
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Oct 22, 2012
Has instances where you set your tolerance for the maximum triangle lenth to say 50m to reduce the amount of triangles along the edge that run at long distances. When I do this I end up with multiple surface holes and I'm not sure why as there are points in the area.
I thought well maybe it's because i should've reduced my max triangles first then added breaklines. Would this matter? I also thought I could add a line to the surface to fix the holes vs. deleting surface lines along the entire edge of a surface for many many miles.
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Nov 14, 2012
I am trying to add points into a surface. I have done this before without any problems, but now I am having issues.
When I ID points which makes up the surface it gives me the correct Z level e.g. 24.5m, however when I hover over the surface it shows me the surface name and a different z level e.g. 0.65m. What is the reason for this difference in z levels? I think this may be causing the issue I am having when I add new points.
I select the surface and use the 'edit surface command' in the ribbon, choosing add point.
When I add a point at the level I require(23.89m), it puts it in a lot higher than the surrounding area, so I tried to put the point in to the lower z levels (0.4m) it puts it in a lot lower!
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Dec 10, 2012
My goal is coming up with the volume bounded by the design surface and the existing surface. I don't have the design surface modeled yet.
Do i need to create alignment offsets?. Alignment 1 profile view is also attached. Then Alignment2.
What about starting with alignment1 profile view? Since I have created a polyline as the design profile ?
how do I shrink labels? Where is it in the settings ; the Align folder had been check.
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Oct 2, 2012
I am issues with DEM files that I am downloading from the USGS website.I download 24k, elevation for the area I need. I then choose staged 1 second, add a surface to a blank drawing, then upload the DEM files to the surface.
The surface imports correcty, but when I try to import points taken by a surveyor on the same drawing, they plot incorrectly.The DEM surface and the points from the surveyor do not correspond. Also, the DEM surface is in meters, not feet. I have tried changing drawing settings, datum types, coordinate types, etc.
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Apr 4, 2012
Is there any way to change the referenced surface on a Surface Elevation Label. I can see the surface in the properties but cannot change it.
C3D 2011
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Jul 29, 2013
I have a project involving 3 programs. I am creating a planned development in 3d to be 3d printed when finished. The project is a 5 acre tract containing 8 buildings. I have built the surface in C3D and each building in Revit. The buildings are not in the same Revit file. For my solid work, I will bring the files over into 3ds Max Design to section into smaller quadrants to build in the 3d printer.
The questions:
Would it be better to import the surface into Revit to merge surface and buildings together?
Would it be better to import the buildings into C3D to merge entities?
Would it be better to bring those entities into 3ds Max and then merge them into one? Will 3ds Max Design allow me to insert entities accurately in the environment?
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Sep 15, 2013
I need to create a sub-set surface from my main surface. not sure what the vernacular is for a "subset surface" in c3d but i do have a feature line that bouinds the desired area, but that is as far as i can solve.
i did try creating a new surface - pasted the main surface in the edit definition, then deleted triangles until the boundary alighned wiht my featureline. This seemed to work, but when i view the properties of the smaller subset suface, it shows a mimum and maximum elevation that is incorrect.
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Mar 1, 2013
Im currently using an addon for Civil 3D called Novapoint. It allows me to create 3D models of surfaces made out of 3d faces and easily models cut and fill 3d-models for me.
The only thing i need to create a cut and fill model is one or several ground surfaces (existing ground, earth layers, rock etc. whatever i need) and a closed polyline/3Dpolyline that represents the level I want my cut and/or fill model.
I enter the spcifications I want such as; earth cut angle, rock cut angle, fill angle, select which surfaces i want to include in the model calculation and select the polyline.Novapoint then calculates the cut/fill model from the surfaces to the polyline and models the different cut/fill angles and gives me the results in a 3d-face model and a specification of the volyme of rock cut, earth cut an fill.
1. Novapoint is quite unstable and crashes alot
2. You cant create profiles out of 3d faces
3. Novapoint does not automaticly combine the start surfaces with the modeled cut/fill surface
4. A large surface made out of 3d-faces demands alot of computer power
So I want to how I do the same that Novapoint does for me in Civil 3D? (I have access to Civil 3D 2007-2013 depending on which one you're using)I know I can take the 3Dfaces i created in Novapoint and make a surface in Civil 3D with them but I want to exclude Novapoint completely.
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Mar 26, 2012
all of a sudden whenever I run audit on my corridor file the surface definition becomes a snapshot. To add to the drama, the corridor surface will not paste into an empty surface. Why?
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Feb 7, 2013
My problem added with pic ... I want to make volume calculate for sample road project. When I try to compute materials I cant use Corridor surface for DATUM... There is only target surface on option..
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Mar 6, 2012
I am trying to visualize a road project. The problems is, whenever the corridor surface goes below the EG surface (when the road is in cut) the EG surface is the only visible surface.
I sort of need to subtract the corridor surface from the EG surface, or merge the both surfaces into one.
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Aug 3, 2011
I recently upgraded to Civil 3D 2011 from C3D2010. I have used the same ACAD.PGP file for years that includes the shortcut C for the COPY command. Up until C3D2011 this would always allow me to copy an entity multiple times, (the default when COPYMODE is set to 0).
I am running C3D2011 64bit on WIN 7 64bit OS. It happens with other commands too that use a dialog box normally, i.e. INSERT - it only brings up the command line version of it.
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May 3, 2013
I was wondering if there is an easy way to trim one surface to another. Right now, I have two slopes (3:1) that are perpendicular to each other. They meet at a corner and I have extended them past each other so that I could see the intersecting edge. Now I would like to trim them to each other like you would a polyline etc... but I am not sure how to do this.
If I select surf trim, it tells me they are the wrong object type, but they are tin surfaces?
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Nov 17, 2013
So I have multiple objects in the scene, its a weapon comprised of several parts. All the parts are touching. Is it possible to select all the objects and create a single object of just the outside surface area? I know I can go through and connect them peice by peice using boolean but the polys are off so it starts to distort my objects when the peices connect. I dont want to just group the objects I only want the shell so I can use pepakura to flatten the single object out.
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Oct 24, 2012
I used a 2d polyline to create a surface boundary for a surface created. The polyline is a closed loop. For the boundary type it is outer, unchecked Non-destructive breakline, and mid-ordinate distance = 1.
My problem is that when I do this I only get a small portion of the surface to show up within my surface boundary. If I don't have a surface boundary the entire drawing surface shows up no problem.
The purple polyline is my boundary and the light blue is the surface created within the boundary.
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Dec 17, 2013
Is it possible to export created surface from civil to revit architecture? If yes , How? And if its not possible - maybe i can somehow import cogo points to revit?
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Aug 23, 2013
I have a keyboard shortcut for Copy (see directly below). This command doesn't copy multiple. But if I type "Copy" at the comment prompt (AutoCAD 2013) the copy multiple is the default. Copymode is already set to "0".
(DEFUN C:C()
(setvar "SNAPMODE" 1)(COMMAND "_COPY")
(PRIN1)
)
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Jul 28, 2013
I'm working on a grading plan which excavates down from just outside the waterline of an existing pond. When I create a surface from the grading, it looks like a whole bunch of strange break lines have been added, messing up the surface. I thought it might be the mid ordinate distance but changing that doesn't seem to fix it it. Interestingly, when I grade from the original waterline, this doesn't seem to happen.
Here is my workflow, a picture of the result is shown below.
1. Turned the current waterline into a feature line.
2. Created new feature line by offsetting outside that feature line by 3.16 ft.
3. From new feature line, grade down 10 feet at 3:1
4. Create new surface using grading.
The grading lines (shown in white) look correct. But when I create the surface (green and yellow), it is all messed up.
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Dec 11, 2013
If I change a point or link code in one of my subassemblies, is there a way I can build my top surface using those?
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Jul 8, 2013
I know my surface is there but somewhere I have turned it off.
I know the surface is there but I'm not able to see it.
Can you paste a surface from a different dwg?
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Mar 21, 2012
When i try to create a material list, i don't see my corridor surface - just the EG surface appear in the list.
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Nov 24, 2009
I am in need of subtracting Surface A from Surface B to display the surface intersections between the two. I have a geological top of clay surface and a bottom of clay surface where the bottom intersects with the top thus showing holes in a geological clay layer. I am wanting to know if Civil 3D supports the subtracting of two surfaces.
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Aug 3, 2012
Can a surface be created from a UCS that is something other than the WCS? For example, can you create a surface for a vertical wall, or a battered almost vertical wall?
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Feb 29, 2012
In LDD the surface, alignments etc were easily accessable in any dwg in a project.
How can I do this in C3D?
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Aug 3, 2013
I'm trying to export a surface as a DEM so that I can import the object into Bryce 7.1. I have a number of sample DEMs that I have downloaded from USGS site that import into Bryce quite nicely. These samples also import to another DEM reader named "3DEM Version 20.7." I'm able to import into Bryce when I set the grid at 10, but the quality of this surface/object is not very good. The DEMs from Civil 3d are referred to as "USGS DEM"s, but they do not load on common DEM readers such as Bryce or 3DEM software. Any way of converting a C3d DEM to a USGS DEM that one of these other readers can import?
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