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 :: 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 :: 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 :: Creating Surface From DGN Contours

Dec 10, 2013

This is the first time I have imported a .dgn file into Civil. The drawing contains contours lines with Z elevation data. When I create a surface using this geometry (polylines + some lines) the surface seems to be scaled in the Z axis by 12.

For example pline (from dgn) is at elevation 46' but the Civil3D surface is 552'

I assume this is a setting in the Surfaces dialog box, but I cannot find it.

Also the elevation field in Properties from the dgn contours is weird. For example, in one area the (pline) contours display -28', 26', -24', -22', -20', -18' in Properties but Civil3D interprets this as a downward slope - which is the actual field conditions. I don't understand the conversion going on here.

The geometry of the pline and contours generated from the surface seem to line up in a side or isometric view (see attachment).

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AutoCAD Civil 3D :: Labeling All Of Surface Contours At Once?

Nov 6, 2013

Often I've found myself dealing with some pretty complicated surfaces that have a lot of nooks and crannies, and many of the contour lines are only in a corner of the surface or are small and closed, and thus when I find myself wanting to have contour labels on all of the contours, there's not really one line I can draw using the "Create Multiple Labels at Interval" option to ensure that every contour is labeled. Thus I end up doing "Create Multiple At Interval" with a few different lines intersecting contours, but I often end up hitting some of the contours multiple times and I get a mess of labels.

I haven't been able to find a way to automatically just multiple labels on all of the contours at an interval in one fell swoop, so I started trying to program one...but then I got stuck with that, too.

Does any built-in method of doing what I want to do, or do I need to continue pursuing a programmatic solution?

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AutoCAD Civil 3D :: Surface Contours Do Not Print

Jul 24, 2007

I have a surface with 1' and 5' contours. In model space the surface behaves normally - I can select it, add labels, change the properties, etc.

But...I have several paperspace layouts and in some of them the surface is not 'selectable', it is visible but I cannot select the object (as though it didn't exist). It does not show up in the print preview or the actual plot either. (Oddly enough, the contour labels are selectable and do print out just fine...)

The paperspace layouts are pretty much identical (plan and profile sheets of a road). There are no layout overides of any sort as far as linetype, visibility, etc.

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AutoCAD Civil 3D :: Only One PC Will Not Print Surface Contours

Jul 15, 2013

Ok we have 6 identical PC's all with the same drivers, same support paths, same plotter paths. Only one PC will not print surface contours. I can open the same file(s) on any other PC and the things print w/o issue. This one PC will not print the srf contours on only a few files. Most files there is no issue...

Quite odd that it's only one machine messing up with a few files that another machine has no issue with.

Win 7 64, Xeon ES165@3.2Ghz,
64 GB RAM, Quadro K4000 (x2)

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AutoCAD Civil 3D :: Contours Disappear On Corridor Surface

May 14, 2013

I built a corridor, then corridor surface.  Then I changed the corridor onto a different profile.  I noticed that the contours at the end were going crazy: the new profile ended before the corridor and everything was going down to zero elevation.  So I went to edit my corridor region.  I enter the required station, and my contours disappear.

Observations so far:

If I set the end of the corridor region to 2+377.91 to  2+384.54 inclusive, the contours on the surface disappear.  The triangles and boundary still display, and the surface gives a Z reading when I hover the mouse over it.  If I set the region end to something above 2+384.54 or something below 2+377.91 the contours reappear.

My profile ends at 2+383.00, and I would like the corridor and the surface to end there too!

C3D 2013 SP1

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AutoCAD Civil 3D :: Creating Surface From Polylines / Contours

Oct 25, 2013

I am creating a surface from polylines and the surface is not being created per the what the polylines represent.  These are simple 5:1, 3:1, and 3.5:1 slopes.  The surface wants to create curves instead of straigtlines (see attached). 

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AutoCAD Civil 3D :: Prevent Surface Contours To Be Visible

May 22, 2012

I've created a surface using Civil 3D 2013. I made a boundary around the perimeter of the site and I've also made some boundaries inside the site where there are no survey points. I assigned "Hide" to these boundaries when I made them in order to not have contours projecting into these areas.

However, with the exception of one of the inner boundaries, some contours are showing up inside the boundaries as well as partial contours. Why are the contours visible and how do I stop them from showing up?

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AutoCAD Civil 3D :: Creating A Surface From Existing Contours

Sep 27, 2013

I have an existing surface and I need to creat a surface using contour lines of a at the high point on a spillway to the bottom of my pond to calculate volumes. How do I do this?

AutoCAD/Survey Tech
Merritt LS L.L.C..
743 Horizon Ct. Suite 100B
Grand Junction, CO 81506

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AutoCAD Civil 3D :: Creating Proposed Surface Out Of Contours

Nov 8, 2013

The engineers at my company digitize proposed contours in a drawing and then they want me to create a surface out of the contours....the contours usually are 2 foot contours with areas that the software tends to translate based on the contours that I selected to create the surface.....I then usually need to create a profile, which does not look accurate compared to the contours, such as low spots etc...............

My question is since the engineers at my work do not how to use the software, and I am not an engineer, making the profile look a certain way sometimes needs to be tweeked by me.... How to alter the proposed surface?I am pretty sure that feature lines cannot cross contours that I have selected to create the surface?

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AutoCAD Civil 3D :: Extract And Export Surface Contours And Labels

May 4, 2011

I want to extract contours with elevation labels from a C3D 2011 surface for use in another 2011 drawing without the surface, as polylines and labels.  Is there a way to do this?

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AutoCAD Civil 3D :: Create Surface From OG - Show Only Two Elevation Contours

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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AutoCAD Civil 3D :: Surface Contours Correct With One Layer State

Apr 9, 2013

I have a surface that shows perfectly when restoring the PCSM layer state (Old LMAN function). When I restore the Grading layer state - the surface contours show incorrectly.

It is like a hide or mask feature turns on and off.

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AutoCAD Civil 3D :: Evenly Space Contours Around Curves In Surface

Jun 21, 2013

Any way to evenly space contours around a curve in a surface.

Many times I have a steep area in a surface that needs to be displayed using 1 foot contour intervals, and in certain areas the contours are crossing each other around curved areas, like a curve in a ditch. In the past i have had to "fudge" the surface a little to get the contours to look correct.

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AutoCAD Civil 3D :: Can't Get Proposed Roadway Surface To Show Contours

Apr 12, 2012

attached is Roadway.dwg file

I made "Road" surface from Corridor Properties / Surfaces... but when I go to surface properties for "Road"...the statistics tab is blank.

2013 Civil 3D

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AutoCAD Civil 3D :: Contours (Lines / Arc) - How To Create Good Surface

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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AutoCAD Civil 3D :: Export Contours From Surface Using Genio Exporter

Nov 5, 2013

I need to output the contours my surface model to a genio for use in Mx. I have the Genio exporter tool installed but when i output the genio all that appears is the Boundary line without the contours, which when i think about it makes sense as the surface contours is more a display option rather than actual contours. Is there a way of exporting the contours via genio.

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AutoCAD Civil 3D :: Hide Portions Of Corridor Surface From Displaying Contours

May 3, 2013

I have tried multiple types of hide boundaries,etc. for this, and cant find a solution.  I'm sure it is very simple, but..

I need a corridor that transitions from 2% sideslope to 0% sideslope.  This transition occurs in a horizontal AND vertical curve.  I understand I could use EOP alignments, profiles, etc to achieve this.  I dont have the time or civil3D knowledge to figure this out on a friday afternoon...

So... my plan is to not apply the transition, and just hide the contours in the transition area and sketch them in by hand.  I want to corridor surface to remain so that when other profiles are created from this surface it is still somewhat accurate (instead of removing this portion of corridor surface, and adding simple contours to the surface).  I just want the surface hidden for +/- 50'. 

Everything I have tried hides the surface everywhere, including new profiles from the surface.

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AutoCAD Civil 3D :: User Defined Contours From Data Shortcut Surface Not Working?

May 2, 2012

I have a existing ground surface drefed into a model and am trying to get a user defined contour at a set elevation but nothing appears. I have userdefined layer on in the surface style and other ideas why it will not appear?

[URL] ......

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AutoCad :: Create Surface Not Using All Contours In A Drawing

Nov 17, 2011

I'm using AutoCAD Civil 3D 2012 and have a question about creating a surface. Firstly, I know how to create a surface and then add contours, how to add a boundary to the surface, and how to draw a polygon around contours and trim everything out and then create a surface of what's remaining but how can I create a surface from contours within a polygon I draw without trimming any contours out? That way I can have a smaller surface to work with but still have additional contours all around it.

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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 :: 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 :: 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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