AutoCAD Civil 3D :: Extract 3D Faces From Surfaces?

Sep 18, 2012

I am looking for a better way to get my 3D Faces from a surface into a DXF. Note: I need to have 3D Faces in a DXF as it is the only way my data collector will accept them. My current process is 1)export surface to a XML 2) open new drawing and import XML 3)make the surface style only display triangles 4)extract triangles from surface 5)change my surface style to no display 6)save drawing as a DXF. I don't like to extract the triangles from the original drawing because I am often making adjustments to the surface and then the old extracted triangles and still hanging around in the drawing. I don't want that. Looking to see if it would be possible to record a macro(or some other automated procedure) that would allow me to extract triangles as save them in a new DXF from a selected surface all in one step.

Civil 3D 2014
i7-3930K Overclocked
32 GB Ram
Windows 7 Professional

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AutoCAD Civil 3D :: Extract Polyline Where Two Surfaces Intersect Each Other?

Jul 8, 2008

is there a way to extract a 3D poly line where two surfaces intersect each other.

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Jan 11, 2013

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AutoCAD Civil 3D :: Volume From Surfaces

Sep 6, 2012

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Feb 5, 2013

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Nov 2, 2013

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AutoCAD Civil 3D :: Creating Two Surfaces Do Not Interact

Jun 14, 2013

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AutoCAD Civil 3D :: Comparing Surfaces As A Visual

Oct 9, 2012

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AutoCAD Civil 3D :: Correcting Surfaces / Contours

Nov 6, 2012

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AutoCAD Civil 3D :: Can Get CV Coordinates For Nurbs Surfaces

Nov 6, 2013

I want to ask, Can I get CV Coordinates for Nurbs Surfaces ? How can I get ?

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AutoCAD Civil 3D :: Multiple Surfaces On One Section?

May 16, 2012

How do I create sections that show multiple surfaces?

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How I miss LDD.

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AutoCAD Civil 3D :: Corridor Surfaces And Superelevation

Feb 26, 2013

I have an alignement to which I have applied superelevation.

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However when I create a surface of my corridor it does not show the superelevation, the surface is showing a cambered alignment throughout.

I have created a new alignment, a new corridor and surface and still the same.

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AutoCAD Civil 3D :: LiDAR Generated Surfaces

Jan 14, 2011

I have recently upgraded to Civil 3D 2011 when we started receiving LiDAR data.  I have been playing around with the data a bit and have a few questions on how the data is dealt with.  It appears that when a point cloud is added to a surface, it is using the point cloud display somehow to generate the TIN.  I believe that the point cloud display is showing a percentage of points based on the maximum number of 1.5 million points.  On these particular datasets (citywide LiDAR coverage, about 2,600' x 2,600' panels), we may have 4-7 million points in each LAS file.  Is Civil 3D ignoring all points beyond 1.5 million in surface building operations?  Also, when adjusting the slider, is there any way to know which points will be displayed...or maybe the points are reduced randomly??

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AutoCAD Civil 3D :: Volumes / Grading And Surfaces

May 30, 2012

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I created another surface (TIN) and pasted the existing topo surface and the proposed grading surface into it and I couldn't get any quantities.

I created another surface (TIN volume) and set the base surface as the existing surface and the comparison surface as the surface created from the grading but again could get no quantities.

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AutoCAD Civil 3D :: Connecting Separate Surfaces

Mar 3, 2013

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AutoCAD Civil 3D :: Combining 2 Cut Area Surfaces

Mar 19, 2013

I have an oddly shapped "cut" area with various elevations that I want to create as a surface so that I can compare the volume with existing survey data. I've been able to get the basic "cut" template in 2 seperate surfaces, but now I want to combine them into 1 surface. When I paste one surface into another, the surfaces go haywire. I have attached a plan and cross section view of what the 2 surfaces (cuts) look like in relation to each other. how I could combine them into one surface and "trim" off the inside grading that overlaps..?

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AutoCAD Civil 3D :: When Publish The Surfaces Will Not Plot

Oct 5, 2010

I have a set of sheets that have an surface (contours) on them.

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The surface is data shortcuted from another file.

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Oct 17, 2012

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AutoCAD Civil 3D :: Grading Groups And Surfaces?

Jul 8, 2013

I have created several pond embankments using the grading tools and have created surfaces using the grading groups. The problem I am having is when I turn on the triangles for one surface, I get the triangles for all the embankments and EG. The software keeps adding to the EG and doesn't cut out each embankment. I know I'm missing a step but I'm unable to find it.

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AutoCAD Civil 3D :: Corridors Surfaces And Intersections

Mar 7, 2013

I've created a T intersection and have created the surface for the T corridor and the entering side road. The surfaces appear correct. When I create a surface for the main road, which has been split into two regions, the surface goes thru the T corridor. How do I create a surface that simply goes up to the T intersection and picks up again after the T intersection?

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AutoCAD Civil 3D :: How To Build All Surfaces Into System

Oct 23, 2013

Until now I have used Civil 3D for small projects. Now I'm starting a large project, 30 parcels, 5 roads in rough terrain.

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How to build all surfaces into the system?

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AutoCAD Civil 3D :: Output Surfaces As XML Files

Oct 26, 2012

I need to export a DTM for use in another package which I previously did by Extracting the Triangles, Selecting the 3D faces & Wblocking to DXF for import to the other package.

The developers of the other package have introduced an XML import which I have been trying out but when the surface is imported into the other package via XML most (but not all) of the triangles honour the original 3D faces.

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IDSP Premium 2014 (mainly Civil 3D 2014)
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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AutoCAD Civil 3D :: Surfaces In Multiple Files

Aug 7, 2013

How practical is it to create and manage surfaces across multiple DWG files?  One of the reasons I'm asking is some of our users are insisting their work can only done in a single file, resulting in massive DWG files and naturally, Civil3D slows to a crawl.  I'll admit I'm not a full time Civil3D user or specialist - thats not my job.  I'm reasonably certain it can be done from the most basic of research (which apparently nobody else wants to do...), but am Uncertain what the potential pitfalls are.

They complain of slowness and are requesting better computers from IT (I've talked them down to more RAM).  I'm trying to forestall a potentially nasty political situation spiraling out of control: they get better computers, others will want them as well and either get them only because of connections, or won't get them and are resentful for the perceived lack of importance.  We don't need people doing 2D schematic drawings on gaming rigs.

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AutoCAD Civil 3D :: Combine Two Surfaces To Make One?

Oct 2, 2012

I'm trying to combine two surfaces to make one.  I saw lots of people saying create new surface and paste the two in the new surface.  Is there a way to create a copy besides doing the copy base, because that keeps causing my AutoCAD to error.  

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AutoCAD Civil 3D :: Intersection Lines Between Two Surfaces?

Oct 15, 2013

I wonder how to get intersection lines between two surfaces in Civil3D API. It seems that the "MinimumDistBetweenSurfaces" command in Civil3D can do this work. But I can't find corresponding API.

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AutoCAD Civil 3D :: Using Export To DEM Functionality For Surfaces?

Feb 21, 2013

Using the export to DEM functionality for surfaces?

My understanding is that it is supposed to use USGS dem format, but I'm having trouble getting the resulting dem to show up intact in ArcGis. The extents are off and it chopped off the northern half of the site...?

I think this is a Coordinate System issue, but can't figure out where I can change anything...

two screenshots attached. one shows surface in CAD, the other in GIS.

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AutoCAD Civil 3D :: 3D Faces In Standard Export Option

Nov 25, 2013

Just downloaded and installed this pack as was keen to see the Export Civil 3D drawing functionality but can't see any great advantages over the standard Export to AutoCAD option.

In fact in the drawing I tried all the surfaces were ignored whereas they were exploded to 3D faces in the standard Export optionAre there, in fact, any advantages to using the Productivity pack version of the Export to Autocad routine?

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AutoCAD Civil 3D :: Extrude Preview (Series Of 3D Faces)

May 6, 2013

I'm trying to extrude a series of 3D faces, a very large series, over 200,000 3D faces. I´ve done this before only it was not on so many faces as I can select only like 3,000 faces aprox at any one time or the computer crashes.

I think this problem could be solved, or at least I could save some time, if the extruding preview could be turned off. By extruding preview I mean that when I enter the extrude command and select the objects to extrude, then immediatly there's a preview of what the objects would look like once they're extruded and that's what's causing the delay and the crashes.

Is there any way this could be turned off?

I've attached an image.

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AutoCAD Civil 3D :: Volume Calculation For Faces Object?

Jan 9, 2013

I have a volume in my CAD file described by 3D Faces. Is there anyway to know what is the volume of this volume -that represents an open pit-?

Every time that I do a volume I do by the comparison of 2 surfaces but this is not the case now.

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