AutoCAD Civil 3D :: Contours Running Through Breaklines

Sep 27, 2012

I am having an issue with my contours running through my breaklines (feature lines).  I have tried re-ordering the breakline, edits, etc and have also set my settings to allow crossings.

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AutoCAD Civil 3D :: Breaklines And Contours

Nov 26, 2013

I'm having problems contouring in C3D 2014.

I'm using the command PL - polyline to create my break lines (Centerlines, top and bottom of curb)?.

 In this particular drawing the first point I click on is carrying the elevation throughout the entire length and yielding bad contours.

Essentially the bottom of curb on each side of the street should be the same elevation with a crown at the centerline.

Instead the elevations are about five feet different because the beginning point is around the corne at a point of tangency on a hill.

This has not happened in any other drawings and I've done them the same way.

I redid the breaklines with the 3DPOLY command and aside from a few minor edits the surface came out OK.

I've been reading about 3DPOLY command but have not found out too much about what the actual difference is between 3DPOLY and PL commands.

Seems like 3DPOLY is the way to go. 

I do not have too much experience with C3D 2014 and am making a huge jump from 2004 LDD. How to build 3D surfaces/contouring.

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AutoCAD Civil 3D :: Ignore Contours Between Breaklines

Aug 27, 2012

The situation is like this:

I am having a survey plan both with points and contour lines. Points are comming from the main road and contour from the outside areas.

I want to be able to make the surface ignoring the contours between the breaklines of the road since any contour inside professional survey is giving me errors on profiles and everything.

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AutoCAD Civil 3D :: Composite Surface Of Existing Surveyed Contours As TIN Pasted Into Existing Aerial Contours

Nov 15, 2012

Some background: We have a composite surface of existing surveyed contours as a TIN pasted into existing aerial contours that we received from a client.  We used polylines to generate our proposed contours, and then generated a proposed surface from that.  We've made a blank surface, pasted in the existing surface, and are trying to paste in our proposed surface...  only the existing contours outside of the proposed suface no longer line up correctly once we do.

We've tried applying the method laid out here: [URL] ........ (and the link referenced in the bottom) but are still having trouble getting the surface to work.  We've tried offsetting as little as 0.25' and as much as 5' with the feature line draped over the existing surface, but it seemed that the greater the offset, the greater the discrepancy.

Just to make sure we even tried that correctly - should the breaklines that we add be standard or non-destructive?  (I've tried it both ways with little success either way, so I don't know if it matters much in this instance, but perhaps for future reference it would work.)

I've attached a screen shot of our surfaces.  The pink and green lines are the proposed contours, the white dashed are the existing.  The outer red line is offset 0.25'.  As I've mentioned, we've tried offsetting various amounts with decreasing success.

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AutoCAD Civil 3D :: Non Destructive Breaklines

Oct 6, 2013

I can't just accept something cause it's the way it is. I like to know the reasoning behind it.

Case in point:

Why does the check box say "Non-destructive breakline?" Why doesn't it say, "Erase tin lines that cross boundary?" I doesn't seem to have anything to do with breaklines. Or am I wrong on that one?

While I'm on a roll, double negatives send me into a tailspin. Like "Disable description keys", True or False. Huh? Why not just say, "Description Keys", on or off?

HP DV7 Laptop
Intel Core i7-3820QM 3rd Generation Quad Core 2.7 GHZ CPU
16 GB DDR3 RAM ( 2 DIMM ) / 180 GB SSD
Nvidia GeForce 650M Graphics w/2 GB Memory
Windows 7 Professional 64 bit / AutoCAD Civil 3D 2014

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AutoCAD Civil 3D :: Get Surface Breaklines

Dec 4, 2013

I have this:

for(int i=0;i<= tinSurface.BreaklinesDefinition.Count-1;i++) { .................

 I have each breakline sets, but I want each breakline of each breakline set(breaklinesDefinition).

I can do this:

Autodesk.Civil.DatabaseServices.SurfaceBreakline sfb = default(Autodesk.Civil.DatabaseServices.SurfaceBreakline); SurfaceBreakline sfb= trans.GetObject(id,OpenMode.ForWrite) as SurfaceBreakline;
But how can I get ObjectIdcollection of surfaceBreakline of one breaklinesDefinition?

I have seen that there is "AECC.Interop.Land.SurfaceBreaklines". Do I have to use this?
Autocad Civil 3D 2014 +SP1
Quad Core Intel i7 3770-cpu 3.40Ghz.
ssd samsung 840 pro 512gb+ssd samsung 840 pro 256 gb+1tb hdd
32gb RAM 1600 Mhz.
nVidia Quadro 2000.
Win 7 Pro 64bit

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AutoCAD Civil 3D :: Mid-Ordinate Distance With Breaklines?

Oct 19, 2007

Where can I set the default for my mid-ordinate distance when adding breaklines to a surface. Would like to change it from 1.0 to 0.1.

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AutoCAD Civil 3D :: 2012 TinSurface Breaklines

Feb 27, 2012

Using the COM Interops we can find the entities which were used toi create surface breaklines:

foreach (AeccSurfaceBreakline brklin in brklines) { object[] ents = (object[])brklin.BreaklineEntities; for (int i = 0; i < ents.GetLength(0); i++) { AcadEntity en = (AcadEntity)ents[i]; //do whatever with the Entity }}

 I have, as yet, been able to figure out how to get the entity(ies) using 2012's .NET API. Is it possible, or do I have to stay with COM?

foreach (ObjectId surfId in CivilApplication.ActiveDocument.GetSurfaceIds()) {TinSurface surf = tr.GetObject(surfId, OpenMode.ForRead) as TinSurface;if (surf != null) {SurfaceDefinitionBreaklines brkdefs = surf.BreaklinesDefinition; for (int i = 0; i < brkdefs.Count; i++){Surface Operation AddBreakline brklines = brkdefs[i]; for (int j = 0; j < brklines.Count; j++){ SurfaceBreakline brkline = brklines[j]; //well, as of C3D2012 SP1 the actual entity associated with this breakline is not exposed via .NET} } } }

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AutoCAD Civil 3D :: 2013 Deleting Breaklines

May 30, 2012

In using 2013 I noticed when I delete a feature line which is added to a surface as a breakline it does not delete it from the surface. Even after a rebuild the surface does not update.  I am having to go into the toolspace and manually delete the breaklines from the surface list.

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AutoCAD Civil 3D :: Filter 3DPolylines / Breaklines

Aug 9, 2013

Can you filter 3dpolylines to find which ones have a vertex at 0 elevation? I do not see the option in the Object Selection Filters dialog. We have several 3dpolys which would take a while to go through each vertex.

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AutoCAD Civil 3D :: Selecting Breaklines Where Are Grips?

Dec 3, 2012

Using the select breaklines in the prospector doesn't do much of anything in my case. Zoom to Breakline works but how do you determine one particular breakline in the bunch if theye were never named?

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AutoCAD Civil 3D :: Arc Or Feature Line As Breaklines

Jan 7, 2014

I am building a surface and have back of curb, curb face, and curb flowline going around a curve.  I cannot create the lines with the usual pline as they will cross due to poor field collect.  I created the curbs with multiple arcs.  I was then going to change them into Feature Lines and am wondering if I can then use them as breaklines in a surface. 

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AutoCAD Civil 3D :: Insert Breaklines To Drawing

May 8, 2013

I have created linework using the line by object tool.  I have created a surface and am trying to add breaklines by selecting some of this linework.  Once I try to create the breaklines, it says that all those breaklines contain errors and have not inserted them into the drawing. 

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AutoCAD Civil 3D :: Resolve Non-existent Crossing Breaklines

May 30, 2013

Dealing with an old topo.  Building a surface from a point group of points in the drawing, and 2D polyline being used as proximity breaklines.

Here is my list of events after I rebuild the surface:

So I went to use the 'Resolve Crossing breaklines' tool, and here's what that looked like:

So are there or aren't there?

When I use the 'Zoom to' feature, it takes me to the midpoint of a TIN line on a breakline, with no other objects around.  Crossing window selection: only the surface and one polyline. I found one crossing breakline just by accident, not from either of these tools.  After I fixed it it didn't change anything.  I even deleted all the breaklines from the surface and added them again, closed drawing and reopened, no change.

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AutoCAD Civil 3D :: Triangulation - Adding Extra Breaklines

Apr 4, 2013

how to fix this triangulations.  Adding extra breaklines does not seem to fix the issue. 

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AutoCAD Civil 3D :: Breaklines Which Aren't Added To A Surface?

Feb 29, 2012

I am using a breakline to establish contours around the foundation of a building.  I've done this in the past with no problems.  Now I'm getting an Event Viewer, Error message saying that the breakline wasn't added to the surface because it crossed a point or crossed another breakline.  In one case there wasn't another breakline in the drawing. 

I've used 3d polylines & others to establish the breaklines.

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AutoCAD Civil 3D :: Locating Breaklines Amongst Many And Removing From The Surface?

Dec 7, 2012

I had some inaccurate survey points in my EG. Now I have new points and breaklines. How to locate thes old breaklines either within the list or visually within my surface editing / style. 

The zoom to doesn't work as there are many breaklines within the zoom extents, and 1000's of breaklines to sift through.  Is there a setting somewhere in the surface where i can turn on the breaklines that have been added already to something that's visible so i can delete those out of my surface?

I'm looking for anything on this one. (Not the obvious answers thought). Delete all and replace all (not happening).

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AutoCAD Civil 3D :: Breaklines Giving Wrong Contour Elevations?

May 19, 2013

I'm somewhat new to Civil 3D 2013 and have never encountered this problem before. I've got a top slope standard breakline (dark green line) and bottom slope standard breakline (light green line) with the highest elevation for the top slope at 72' and it gradually slopes down to about 54' within a 75' span. My problem, as you can see in the screen shot below, is I am getting 54'-59' elevation contours right next to a survey point with a 72' elevation whenever I hover my mouse over one of the contours. There are no nearby points with anything near 54' even outside of the surface boundary (shown in magenta).

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AutoCAD Civil 3D :: Added Featurelines To Surface As Breaklines - Triangles Still Crossing

Mar 25, 2013

I added three feature lines to my surface as breaklines.  But the triangles still cross them.  Triangles shouldn't be crossing breaklines.

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AutoCAD Civil 3D :: Export XML Contours Not The Same?

Nov 27, 2012

i'm exporting a surface from 2013 to be used in 2010 for presentation. works great but the contour interval is not the same as the surface i'm exporting. working in 5/25 contours...xml import comes in with 2/10 contours. looked for a setting but can't seem to find.

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AutoCAD Civil 3D :: How To Smooth Contours

Oct 23, 2012

I'm drawing a topo and trying to figure out a way to manually smooth out my contours. I'm not talking about the little jagged edges that you can remove if you use the smooth surface option under surface properties but the big ugly looking jumps you see when contouring a relatively flat lot. In the ancient version of AutoCAD my company used the contours came in almost like splines and you could move the vertices around to make them look good. I know you can go in and delete some TIN lines and edit point elevations but that is very time consuming and I'm hoping there is a quicker way.

I know I can extract them into polylines but there are too many little segments to be useful. I've seen the SIMPLIFY SURFACE option and while that takes away some of the roughness it creates some as well. Is there some better option than extracting and then drawing a spline between the parts I want to smooth out? These contours don't need to be 100% accurate, I just need them to look simple, like if someone was drawing them by hand.

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AutoCAD Civil 3D :: Add Contours To Surface

Nov 20, 2013

I have added contours to my surface (the blue lines).  For some reason the surface generated contour (the orange line) is jumping across the contours I've added. 

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AutoCAD Civil 3D :: No Contours On TIN Surface?

Apr 25, 2012

My TIN surface either did not generate contours or did not display them on my drawing. I created and tried  surface styles of many contour intervals(from 0.5' and 4' to 2' and 10') without success. I made sure my contour layers on both the Style Dialog box Display Tab and Layer Properties Manager were turned on, still no success. 

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AutoCAD Civil 3D :: How To Get Simple Contours At Once

Sep 9, 2012

When I generating contour(surface) using Civil 3D it gives very complicated contours.Some times those contours cuts each other and have very strange shape.

I used to use SURFER software to generate contours.It gives simple contours.But I like to use Civil 3D because.

I attached SURFER contours and Civil 3D contours. I also attached AutoCAD file those who using older versing of Civil 3D.

I know how to smooth contours in Civil 3D but it does not solve my problem. You may say "You should  use commands like swap edge,delete line .

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AutoCAD Civil 3D :: Computer Lag With AECC Contours

Mar 20, 2013

We have a total of three machine at our office that are running 64-bit Windows 7 with Civil 3D 2013. Two of the three machines have problems with drawings that include AECC_Contours. When you try and start a polyline or line the mouse will begin to jump and lag. As you move the cursor off of the AECC_Contours the mouse returns to normal operation. I have looked around throughout forms and have yet to find anything that relates to this. Also I have disable Aero within Windows, thinking that may have been the issue. All three machines are running the same version of Civil 3D with the latest service pack.

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AutoCAD Civil 3D :: Contours Disappear In 2010

Nov 8, 2013

While working in a drawing with civil 3D points and a surface created from those points, once in a while the contours will disappear. The contours disappear during any number of different commands, so it doesn't seem to be linked to a specific set of commands. If we save the drawing, close it, and then open it back up the contours are there with no problems. Is there a fix for it beyond closing and reopening the drawing. We are using Civil 3D 2010 in our office, and all of the current updates.

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AutoCAD Civil 3D :: Correcting Surfaces / Contours

Nov 6, 2012

Im working in Civil 09. I need to adjust the surface I created in order for the contours to be correct. Right now I'm interpolating point elevations to adjust the contours. I find myself adding lines and adding and deleting points. It's tedious. I tried changing the grid spacing to smaller one. It didn't seem to work.

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AutoCAD Civil 3D :: How To View Contours At Elevation 550

Dec 28, 2012

I have a surface with a bunch of contours. I want to view the contours at elevation 550. In Microstation there is a set display depth command. Is there a tool in autocad where I can view certain elevations.

I want to make layouts/viewports that are clipped to different elevations. For example I have a surface with 5' contours. I want to create multiple viewports on a sheet showing what each contour looks like at its elevation.

Civil 3D 2012 SP4.0 Windows 7 Enterprise 64-bit
C3D 2014 SP1
Dell M6600, Core i7 @ 2.3GHz, 16 GB ram
Dell T3500 workstation, too much ram to post

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AutoCAD Civil 3D :: Creating Points To Contours

Apr 1, 2013

I encountered a problem while creating contours from the points. what actually is the problem with the points or tell the steps once again that would be great. I'm attaching the points file.

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AutoCAD Civil 3D :: Labeling Contours In Every Drawing

Mar 15, 2013

I'm running 2012. Is it still true that I need to label my contours in every drawing? I have a drawing that contains my existing surface (about 90 Acres). I have labeled the contours in that drawing. I then have a output drawing that the existing contours are a data shortcut. The contour labels do not show up.

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AutoCAD Civil 3D :: Contours Disappear When Zooming Out

Mar 20, 2012

Whenever I zoom out in a drawing in Civil 3D with surface contours, some of the contours disappear. I imagine this is a result from a system variable setting but could not find it.

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