AutoCAD Civil 3D :: Exporting Curved Feature Lines And Retaining The Elevations?
Jan 3, 2013
I have a series of curved feature lines in Civil 3D where the elevation varies along the length of the curve. When I export the file in AutoCAD the feature line elevations are 0. In my previous version of 2010 civil 3D this did not happen but now I am running 2012 version and I can't find a way around it.
Why does 2012 Civil 3D not export feature lines the way it did in previous versions and retain the elevations?
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Sep 11, 2013
I have a curb return that was drawn as a fillet and I added two points at the PC and PT. Is there a way to create a feature line out of this with the two points associated so that it will interperlate between those 2 points?
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May 13, 2013
I'm currently using the Autocad Civil 3D 2014 on daily basis for urban infrastructure design. When using Autocad Civil 3D 2013, I always would create feature lines from corridors and then export this file to a ACAD 2007 version, which would read the feature lines as 3D polys. The company's topographer could then use this file to make his markings on the field very easily.
Now, when I do the same process using Autocad Civil 3D 2014, the ACAD 2007 file won't present the feature lines as 3D polys, but as 2D polys. This presents a major inconvenient, because I now have to export the file to ACAD 2007, open it in Autocad Civil 3D 2013, rebuild the surface from the design contours and create a feature line from the design surface; export the surface AGAIN to ACAD 2007 and FINALLY I'll get the 3D poly my topographer can read.
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Mar 12, 2013
We often have to create dxf files for surveyors to use in Trimble survey controllers. Usually, the linework has to be 3D polylines so that they can stake out the lines on the ground in 3D.
When compiling our design we often have to use arcs which do not function as 3D polylines. To get around this, we convert them to feature lines. This works for creating surfaces but we are unable to export these feature lines in our dxf files.
C3D 2012
Win 7 64 i5
8GB RAM Quadro FX 1800
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Mar 8, 2013
How to create a flow arrow label for a feature line that parallels the curve?
I've a vague notion that this could be done with a dynamic block and a few fancy expressions. I'm comfortable with expressions, but I've never used dynamic blocks at all, so I wouldn't know where to start.
To be clear, I know curved text is possible, but I'm looking for a curved line (ie an arc) that would look 'parallel' to the arc of the feature line (ie have the same centre point). This would have to be dynamic to allow for different radii and for flipping to the left and right side of the feature line.
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Aug 13, 2013
I am working on laying out data for some survey crews along the centerline of the road. I have a BC and EC elevation, but the vertices along the CL are at different elevations, which were the original elevation of the poly line before being transformed into a 3D polyline. Is there an easy way to make the full line follow the slope from BC to EC other than manually shifting the vertices?
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Mar 25, 2013
We are running Civil3d 2012. When converting a line or 3d poly to feature line, or just creating one it adds elevation points where it crosses surface breaklines even if you do not assign elevations. We want the feature to just have 2 elevations. The beginning and end. Is this a bug? Or is there another setting somewhere?
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Apr 19, 2012
I Created a Feature Line from Objects (a polyline). I added it to Site 1, gave it a name, layer. Do I Assign elevations during creation (conversion options)?
I set the Elevation to 8.5 (NOT From surface)
Then I go to
Modify Feature Line -
Elevation Editor.
Why are the elevations locked? I want to set them.
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Sep 13, 2013
Given a feature line/polyline(FL/PL) and a series of points directly on the FL/PL, how can you assign the elevations of the points to the vertices of the FL/PL?
Without using a surface?
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Feb 23, 2012
How does a 97 contour pass through a closed feature line with elevations between 97.3 and 97.8?
C3D 2011 (latest updates)
Win 7 Pro, 64-bit
16 GB RAM
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Sep 26, 2013
I have a finished grade surface and I have a feature line that is my waterline. I created an alignment and then recreated my feature line so they would be linked. I can then create a profile using my alignment and that shows my surface at that alignment. I can even add the waterline by using project objects to profile view.
I need to be able to edit the feature line elevations in the profile view by creating and erasing PVIs so this will tie back to my geometry.
AutoCAD Civil 3D 2012 SP4
Windows 7 (64)
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Apr 23, 2012
I have created several feature lines from which I graded to distance or surface. I am trying to edit all these feature lines raising them by 0.5 ft. In a few instances, I need to keep some of the elevs while raising others by 0.5 ft. I am changing the elevation of individual vertices.
Some of the features lines all me to change all the elevations. But on a few of the feature lines, I can change all the elevations except for one. The feature line station for which I cannot change the elevation has a white triangle in front of it in the Elevation Editor instead of a Green Triangle like most of the points. It's clear that the White Triangle means something that is not allowing me to edit the elevation of that feature line vertex, but I'm not sure what or how to fix it so I can edit it like the others.
Also, the Raise Incrementally icon does not work on these points with a White Triangle in front of them / does not change the elevation of them.
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Apr 25, 2013
Civil3d 2012 - is there a way to project standard autocad lines and curves to an existing surface to the lines and curves end up with the surface elevations? we are trying out that wants 3d lines exported in a dxf file. We have a surface and we have the lines...it's just that the linwork is all at 0 elevation.
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Oct 23, 2013
So here's an odd one (at least I think it's odd ): I have a drawing that it utilizing feature lines which are projected to the cross sections to display R.O.W., easements, etc. However, every now and then (there doesn't appear to be any similar operation that causes this) the feature lines will change their location, in this case they typically seem to move north and east about 200'. I can't deuplicate the problem...it just seems to happen on its own.
I'm running Civil 3D 2013 with SP 2.
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Jun 12, 2013
I have created a feature line from a survey which will be the inside shld of my new road design. I have created the feature line using my design elevations but need to add a PI and Elevation at a specific Northing. When I try to edit I can only seem to find the chainage and elevation but I also need to know the northings and eastings so I know where to insert my PI. I would like to just edit the table since I can't seem to figure out how to insert the PI. (I am new to C3D and still learning...) My final product will be a road with 2% crossfall and I intend to use offeset and grading features to accomplish my final design. How I make this edit...
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Feb 11, 2010
Over the past 6 months we have had the feature lines just up and disappear from the drawing for no reason. They were not erased. They just went away for some reason but the surface created from them was still there.
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May 6, 2012
I am new to civil 3d. I am building a site down the side of a mountain which consists of 4 tiers/ pads with different levels. Each of the 4 pads has its own feature line. To prevent any confusion or attractions of the feature lines to each other i have moved them to a site that i created called temp site locations.
What is the best way and location to do each of these gradings and how do i tie them all back on to the same drawing ? I assume (maybe wrongly) to do each separately and copy back into the the real drawing.
Do i need to create a new site for each pad. If i do my grading in the temporary site when i bring them back to the real site will the interact with the other feature lines.
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Aug 15, 2013
I have a created a surface from contour lines.I have drawn a feature line and assigned elevations (it slopes down from 3.5m elevation to 2m elevation). I have added grading from the feature line to the existing surface but have not merged the feature line with the surface.
I also have to make a low area (elevation at 1.5m) on the surface and know i need to grade at 1:1 from the feature line to the low point. Is there a way to grade from a feature line at a given grade (1:1) to a known height (my low point at 1.5m) without drawing another feature line for my low point? Seeing as the height of the feature line varies I can't just offset it at the grade.. I.e. the grade is the constant here.
I will have a few walls and lower / higher areas to grade to. I have drawn the top of my wall and mounds and have assigned them elevations but not sure whether to now make them all feature lines and try to merge with the surface by grading at a set grade or to do some sort of infill.
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Nov 27, 2013
I designed an upholstered furniture with curved surfaces. When I generate sections or elevation I'll see the invisible edges on curved surfaces! Is there a way to get the same result as the object viewer hidden line (or shaded with edges)?
2nd question. is there a way to control how many steps the surfaces are tessellated? The outline is not very smooth!
Top View
Elevation (too many edges visible)
Result of the object viewer.
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Apr 16, 2012
Is there a way to link feature lines to points? If I have a series of points and I've joined them with a feature line; I want the feature line to update automatically if I adjust a point elevation.
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Oct 7, 2012
I want to hide feature lines in realistic view. I changed corridor's feature lines style as pic1 but i can still see feature lines (pic2).
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Jun 14, 2010
I am using the Mill&Overlay sub set to overlay an semetrical road and a crown offset of zero. I one file the crown point feature line has gaps in it and in another file it zig zags along the road.
I forgot to mention that the triangles and the cross section look as expected. trouble is I want the crown profile
Civil 3D 2012 & 2013
HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram
64 Bit Win7 OS
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Feb 28, 2013
I've had cause to do some site grading by creating featurelines from scratch. What is the difference between gradient and slope (they are the same are they not?) when creating them as I always seem to go wrong when using this method??
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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May 8, 2012
I would like to export feature lines out as land xml file. Can this be done in Civil 3D or is there another work around.
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Oct 30, 2013
I brought a site into a drawing by LandXML which had 35 feature lines in it. How do you get the actual linework of the feature lines to show up in your drawing? It shows them in the site but the linework is not there.
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Nov 7, 2013
I want to do this: URL...to get vertex of feature lines.However, I have to select a Reference:Autodesk.AECC.Interop.Land
Can I use that Reference for Civil 3D 2014? is there limitations for Interop in Civil 3D to feature lines?
I use(agreate) all these References Autodesk. AEC.Interop. BaseAutodesk. AEC.Interop. UiBaseAutodesk. AutoCAD. InteropAutodesk. AutoCAD. Interop. CommonAutodesk.AECC.Interop.<domain>Autodesk.AECC.Interop.Ui<domain>
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Nov 26, 2012
I create a feature line including some arcs. While editing I need to redimension the feature line, but the arcs will lose tangency. Therefore I have to break/ trim/delete/manually edit the tangents until they intersect and then FILLET them to get a new arc. I tried EDIT CURVE with 0 Radius but it's not acceptable. Any workaround on this one (filleting feature lines like polylines or a closing option)?
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Aug 29, 2012
I would like to add elevation values of start and end of feature line segments within a table. I can set up start and end co-ords but can't seem to find where I can add the levels?
I can add lables to the plan with levels but really would like to have a table as well as some of the segments are too small to lable on the layout.
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Apr 17, 2012
I have a road corridor with feature lines connecting the road edges (cyan), ditchline (dark green), daylight_cut (yellow), daylight_fill (green) and daylight (white). At certain random locations along this corridor I am getting feature lines which span from one station to another, ignoring all of the corridor sections in between. The image below shows a daylight_fill line spanning over 60m, even though there is a daylight line through this region.
In this area a ditch line and a daylight_cut start at 4+110, skip over the next cut section at 4+120 and jump over a hundred meters to the next piece of ditch at 4+280..This corridor builds clean - no error messages reported.
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Oct 30, 2013
I have several featurelines that I wish to explode to be 3D Polylines (bad, I know, but it's a test for a way to get data across from our design group to our survey group).
Last week, in this drawing, I exploded a large selection of featurelines and they all became 3D polylines, preserving their elevation data. This week, I drew an additional set of featurelines in the same drawing. When I explode them once, they lose all elevation data, becoming lpolylines at z=0. Additionally, the Prospector shows me several errors: "breaklines not added to surface" or something similar. Which is an odd result for the explode command.
Why did this work once but not a second time?
Win 7E 64-bit, Intel i7, 12 GB C3D 2012
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Jul 1, 2011
I have reason stumbled across the offset assembly functionality of corridors, and for the most part, I have been quite impressed. One thing that has come up that is odd to me that when I create a surface from the corridor using feature lines, the feature lines that are created by the offset assembly are not added to the corridor surface, even though they are visible and can be selected. When I create the corridor using links, everything is fine and the surface looks great. I can work using the links, but the more curious part of my nature is a bit tortured not knowing why this is happening.
On a related note, any strong preferences/reasons for using links vs. feature lines, or vice versa?
C3D 2014, SP1
Dell Precision T3500, Windows 7 64-bit
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