AutoCAD Civil 3D :: Create Surface From 2D DGN?
Feb 3, 2010
I work in both Microstation(PowerCivil) and Autodesk(C3d 2010) platforms, unfortunately not very proficient in either. We use both due to project requirements. I have no say in the format what-so-ever. Now to the point.. I am working on a project thats survey is a 2d .dgn however I am to create a model from this information (which happens to be just text spot elevations no intelligence attached) and supply it in C3d..Is this Possible ?? Or would it be easier to just do it in PowerCivil (I have made surfaces with 2d objects before with) and convert to .dwg upon completion ????
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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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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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Jun 5, 2012
Any experience with the Tin Surface CreatebyCropping Function.
The specific stumbling block I have come across is the best way to deal with the database that is required to export the new cropped surface to as it has to be different from the current drawing. I don't actually need the cropped surface to be saved but need to be able to adjust elevations and extract the tin from it. The tin would then be used to generate a pregrade surface in the base drawing. Previously I had done this with non-destructive boundaries but I find the cropped surface to be more accurate.
Civil 3D 2013 - Windows 7(64 bit)
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Jul 19, 2013
I have two separate graded levees in my drawing. One has created a surface just fine, the other absolutely refuses to generate a surface. I've deleted the grading even the feature lines and re-did them. In my grading group I have automatic surface creation checked and the volume base surface checked. I show the surface in the prospector but there is nothing there. The one levee will show contour styles but this one ZIP!
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Aug 17, 2013
I'm creating a containment dike around and island. I want the berm to tie down to the existing surface, then offset from that tie point 21' to the surface again. I can do an offset from Baseline, or a tie to an elevation in a profile. What I can't do is make the offset 21' from the tie location over an additional 21' to another tie point on a surface.
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Oct 31, 2013
I am working in Civils 3D 2014 and I have a survey with points already on the correct elevation layer, I have tried creating a surface from this but it does not show up.
My process:
- I create a new drawing and insert a block (my topo survey) and click explode when I do this
- I create the surface by TIN and make sure I have the correct layer for the points that I am selecting
- Click ok
- Then go into that surface and turn on all layers and refresh - still nothing
- I also made sure that my surface style was 1m contours so I would definately see this.
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Dec 16, 2013
I have created a contour layer in MAP and need to bring the data into Civil (to create and EGL surface) which I usually I do via an alter properties query.
There is the Create Surface from GIS data in 2014 but this requires shp files so the two questions I have are:
Can the contour layer be output as shp files (and if so how)?
If yes, is this easier/more efficient than my current workflow?
(No connection with Autodesk other than using the products in the real world)
IDSP Premium 2014 (mainly Civil 3D 2014 UKIE SP1 & Infraworks with some limited 3ds Max Design)
Win 7 Pro x64, 256Gb SSD, 300Gb 15,000 rpm HDD
16Gb Ram Intel Xeon CPU E5-1607 0 @ 3.00GHz (4 CPUs), ~3.0GHz
NVIDIA Quadro 4000, Dual 27" Monitor, Dell T3600
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Jun 12, 2013
I am start work in civil 3d 2009, I have a project started in LDD2009 and am trying to migrate to civil 3d 2009. I have imported the points, tin, and contours but cannot figure how to create an actual EG surface. Can some on etell me how to create and actual EG surface using tthe tin and points.
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Apr 24, 2012
I'm trying to replicate a dump surface from a cad file, but this one is rather different from what i'm used to (more simple and poligonal).
This one is curved and the top of the platform has inclinations has the picture shows.
I'm having trouble on finding the best way to aproach this dump surface. I tried to start from point 2 with the curved feature line and grade back 2% till EG and then grade forward 10% till it reaches point 3 at elevation (900) , but when i grade forward the sides obviosly dont hit my EG.
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Jul 8, 2013
I just upgraded to Civil3D 2014 and Windows 8. When I create a TIN surface using a DEM file no contour lines are displayed. Points are processed and triangles are created and can be displayed but no contour lines. Contour line layers are set to display in the style file.
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Mar 6, 2012
I use RocTek for cut/fil calculations, but the program is old and basic, I'm trying to transition to Civil 3D 2012 right now. Typically I create "no work zones" around my building footprints, so that I can do a more detailed take-off in those areas for over-excavations and that sort of thing. Right now I'm using Civil 3D to create an existing surface, a proposed surface, and then a volume from between the two. I thought if I just traced my proposed contours over the existing within the building footprint that I would get what I was looking for. However, analysis of the cut/fill volume shows that there are still some changes being made around the edges of the building.
Is there a specific way to make a proposed surface, but leave parts of the existing surface untouched?
See attached photo. The upper middle portion of the screen is where the building is (forgot to turn on layer).
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Jun 14, 2013
I was wondering is it possible to create a surface from a Revit model ? There are retaining walls etc in the revit model !
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Jul 28, 2011
I would like to create surface from contours and extract points (with value) from on it. I had contours in my drawing; each major and minor contours are single polyline with elevation (Z value).
If I create surface form CONTOUR, some polylines (major or minor) are not included in to surface. After the creation of surface, I tried to erase the existing contour lines (Polyline) from drawing but the surface will be disappearing.
If I create the surface from ''DRAWING OBJECTS'', I'm not able to select the polylines (attachment 01) .
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Apr 19, 2012
Attached is a dwg file that refuses to complete the surface triangulation. Can some try this? The maximum triangle length is set to off. I'm out of guesses. If I move the furthest point around it will complete the surface but just not in it's current location. Point number 69
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Oct 25, 2013
I recently upgraded to Civil 3D 2013 and now all of my "Create Surface" commands do not work. I get the message " _AeccCreateSurfaceGridFromDEM Unknown command "AECCCREATESURFACEGRIDFROMDEM".
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Nov 13, 2013
If i have a GPS Survey which i can create a surface from and 2D mapping from GIS records, is there any way to turn the 2D mapping into 3D using the surface data?
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Aug 3, 2012
Is it possible to model a surface in Civil 3D with an inverted rock face as in the cross section below? We will be scanning a large hill for quantitiy before and after they blast so will be using point clouds.
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Jul 2, 2012
I have created a breakline from a feature line which cuts the triangles of my surface. Is there any way to create a seperate surface from the triangles inside the breakline.
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May 4, 2012
I need to create a subgrade surface for a landfill project. I have already created profiles and sections on a 200x200 ft grid along a baseline alignment that follows the center of the proposed landfill. In my profiles and section views I have drafted in my proposed subgrade elevations.
Is there any way to create a surface by selecting critical points along the profiles & sections? I would prefer not to use a grading group b/c the site is in excess of 200 Acres, and the grading tools tend to crash Civil 3D 2009 on large sites.
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May 8, 2012
We are using Civil 3d 2012 with Topcon Data Collectors. Topcon will not read a profile created by using "create surface profile" command but it will read a profile using "Profile Creation Tools" command. We are not sure if this a civil 3D, Topcon or a LandXML issue?
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Jun 8, 2012
I've created a surface into Civil3D by importing a LandXML file created from contours in a .dgn file. When I create profile views for the alignments, the elevations are shown negative (-500 to -20) where as they have to be in between 500 to 670. Also when I run the surface elevation analysis, all the elevation are shown in between 1000 to 2200 inches as shown in the figure attached.
Am I missing any conversion or some settings when importing the surface.
Windows 7 x 64
Nvidia Quadro 2000
24 GB Ram
i7 960 @ 3.20 GHz
Civil 3D 2012
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Mar 2, 2012
I created surfaces in Civil 3d 2011 for existing and proposed and I did a surface volume between them. Is it possible to create a specific contour in the volume surface that represents the fill volume elevation (daylight line I think)? My proposed surface is a flood water elevation and I need to define the boundary at that elevation.
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Oct 1, 2013
I created a new surface, pasted my OG surface into it, set the build to exclude elevations less than and greater than but my surface still is showing every contour range. I want to only show contours at elevations of 371.5 and 370.5
Is it because it's a pasted surface?
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Aug 21, 2013
I just tried to create a subgrade surface using the base link. The surface turned out to be wrong because some of the points in the Lane Outside Super Layer Varying Width subassembly are uncoded. Everything I've looked at seems to be programming related (over my head). Do I need to download a composer for 2014? I didn't see one on the list for 2014.
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Mar 27, 2013
I have in front of me a survey of a small section of road (it's only 10m x10m or something). I want to be able to create a profile along the road section to demonstrate the surface level changes. I have created a network surface but Civ3D doesn't seem to able to use this type of surface to create a profile. Is there anything I can do, perhaps a way of transforming the network surface into another type of surface? Or am I going to have to manually create this profile in ACAD!
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Feb 14, 2013
So I received a whole bunch of contours from an architect. They are lines and arc. big sweeping arcs. Whats the best and fastest way to create a good surface. I can change them globally to a polyline but I need to add vertices like every 5 or 10 feet to get a good surface. Can I select multiple feature lines (after converted) to add vertices?
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Apr 17, 2012
I am doing some car park designs with Corridors at the moment.
The method I am using is to create a dummy surface and apply surface profiles to all Baselines and Targets (mostly Offset Alignments). This way if I have to change my levels, I simply amend my dummy surface and everything updates straight away.
This works great, but I recently got a (typically random) Fatal Error. I recovered the Recover drawing which was saved and for some reason all profiles changed to Static and I can't change them back to Dynamic.
I know that if an alignment cant find the surface it will change to Static and I assume that during the fatal error or recover process, something must have triggered for this to happen?
Is there any way (other than resampling all profiles and updating each corridor target individually) of making the profiles dynamic again?
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Intel Xeon E31230 - 3.20 GHz
4.00 GB RAM
Windows 7 Professional - 64-bit
Nvidia Quadro 600 - 1GB DDR3
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May 3, 2013
I am trying to create a localized existing surface from a very large topo. I promoted the existing surface shortcut into my drawing, then created a cropped surface to be put in a new drawing. After creating the cropped surface the new file shows that a surface has been created, however, the surface contains no data. I am using c3d 2012.
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Jan 9, 2013
I need to create points with surface elevations along sample lines. The points need to represent the verticies one would see in the section editor. I've attached an image of my section editor for one of my sample lines. I need to create points that represent these 24 verticies along this sample line and do so for the rest of my sample lines as well. Is there an automated process to create these points?
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Nov 28, 2012
I am creating my Final Grading surface with from 2 surfaces - a proposed road surface and a proposed grading surface. (Note of roads within the road surface)
The issue is that when I paste the proposed road surface (that consists of several looped sections) over the proposed grading surface, the proposed grading surface within the looped road areas dissappears.
I have tried several options using boundaries for the inner looped areas on my road surface, and has altered my order of opterations for my final surface edits, and many other things also.
I have attached an image for reference.
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