AutoCAD Civil 3D :: Overhang Correction - Corridor Surfaces?

Jun 5, 2012

how and when I should be using "Overhang Correction" setting in my Corridor Surfaces?

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AutoCAD Civil 3D :: Corridor Surfaces And Superelevation

Feb 26, 2013

I have an alignement to which I have applied superelevation.

The superevation has been applied and the alignment has been annotation and it shows the change from camber to superelevation on  the curves.

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 :: Merging Corridor Surfaces That Run Parallel To Each Other

Dec 11, 2012

How do I merge 2 corridor surfaces that are running parallel to each other. Due to this being an overlay project the CL will stay the same just raised 4.5" from existing CL and the existing cross slope varies which we are matching until you hit the sawcut. We are not ripping out or milling any apshalt, it is strictly an overlay of the exisitng with 4.5" of new asphalt. We are saw cutting 2' either side of theedge of paveement and matching in with proposed.  

 I have created a feature line over the existing cl then raised it the required height. the cl has been offset 10 both sides to create my left and right shoulder alignments,  I then created a left and right shoulder corridor assembly which has supplied 2 seperate surfaces. I now would like to merge the 2 surfaces using the raised cl feature line as a break line to create the final proposed surface. I would prefer not to have to create feature lines from my corridor and create a new surface because i would like to take asphalt and subgrade quantaties at the end with out having to hand calc but will if need be.

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AutoCAD Civil 3D :: Corridor Datum To Follow Protruding Surfaces

Dec 4, 2013

Am trying to create a corridor datum surface that goes around Protruding lanes but it seems I am Short on knowledge here. the outer lane, LaneOutSideSuper has a greater thickness than the inner lane (same sub assembly) and I would like my datum surface (actually, not only the datum surface but other layer surfaces) to attach its self around the bottom links of both surfaces but it shoots from the Crown_sub to the outer lane Datum.

I have used the bottom links overhang and adding feature lines to the surfaces but it doesn't seem to cut it. Attached is an illustration of the section view. The top figure is what I hope to get and below is what i seem to get.

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AutoCAD Civil 3D :: Surface Corridor Is Not Triangulating Entire Corridor Boundary

Sep 14, 2012

I have created a surface from a corridor.  I set the boundary of the surface to the daylight of the corridor.  In some areas of the corridor the surface does not triangulate see attached.

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AutoCAD Civil 3D :: Copy Corridor Or Corridor Station Values Only?

Dec 13, 2012

Copy a corridor successfully? I'd like to try this just a little worried about the explosion of evil this may cause to my Civil 3D session.

Even all the properties of the corridor setup from one to another would be useful. I'm building one corridor and an 2nd one that matches everything except I need to replace my Assembly with one meant for stripping.

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AutoCAD Civil 3D :: Corridor Surface Is Not Matching Corridor Top Links

Mar 21, 2013

My corridor surface is not matching my corridor top links.  see attachments.  this is affecting my volumes!

The section-plan(surface red).png is showing the section editor and the plan view.  the red highlighted line in section is the corridor surface and as you can see in plan view the surface is incorrect and wiggly.

The pdf is all my sections with the red linework being the corridor surface.

C3D ver 2012
Win 7, 64bit

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Revit :: Why Won't Roof Install With Overhang

Jan 13, 2013

how do I post revit files and jpgs?why won't the roof install with the overhang? I set it to 12", click on the walls and no matter what I try, I get a general message that I can not produce roof. When I click on lines, I get a roof without an overhang.How do you fill in the gable ends?

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AutoCAD Civil 3D :: Volume From Surfaces

Sep 6, 2012

i'm jumping into 3d late in life...playing with volumes. i've created surfaces from aerial surveys and have saved the surfaces as separate files. i would now like to run volumes of the two as they represent the same quarry site from different years. it appears (?) i need to have both surfaces listed in prospector to run volumes. each separate file has its own surface listed. do i get (import?) the second surface drawing into one of the files so i have both listed and can run volumes? i see where i can create a surface from importing a .tin file...but i don't see how to export the surface as a .tin file.

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AutoCAD Civil 3D :: Surfaces Are Not Updating

Feb 5, 2013

I am having a problem with my data shortcuts for my surfaces not updating. I have 2 surfaces (one ex and one prop) both are on auto-rebuild.  Both of them are in separate files and data short cutted into my profiles files (I have one for water, one sewer and a third for storm drains). Any time I make a change whether I add or subtract data the file the data does not update in the profiles. As a work around I have been creating a new data short cut and adding it to my profiles files. What am I doing wrong that would make them not update?

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AutoCAD Civil 3D :: How To Connect The Surfaces

Nov 2, 2013

When you paste a surface into another how does it connect the surfaces?  Does it create a vertical wall where at the edge of the paste surface?  Can you tell it to grade a certain slope to the surface you are pasting into?

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Revit :: Overhang Of Roof On Left Doesn't Get Trimmed

Jan 8, 2013

I have two sloped roofs that are joined as shown in the first image ( the site plan). The overhang of the roof on the left doesn't get trimmed when the two roofs are joined as shown in the second image ( the section).

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

Jun 14, 2013

I'm trying to create a surface under my 'existing ground' surface. There is shallow rock where one of our projects is located and using geotechnical data I want to create a 'rock surface' at the known rock elevations. I just want this surface for visual reasons and do not want it to interact with the existing ground or pipe network.

I have 4 places along the roadway where I know the rock elevations. I created new points around each known point with the same elevation so there would be more than just four points on the surface and so I could make it the width of the road allowance. But when I look back to my profile of the road, it shows the existing profile drop to the rock surface at each place that I created points for the rock elevation. Not sure how to make it so the existing ground surface doesn't pick up the new points I added for the rock elevations.

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AutoCAD Civil 3D :: Comparing Surfaces As A Visual

Oct 9, 2012

We will be doing some grading in a park with trees.  Probably maximum depth or fill of 12 inches.  The question has come up to be able to show cut and fill quantities as a visual shade of colors.  I have a way to display cut and fill ticks and it will give me the value, but that's not what they want.  I change the cut ticks to red and the fill ticks to green.  What is the best way to represent this like when you turn on slope percentages and assign different colors.  but I want like 0-2" fill to be red, 2" - 4" to be green, etc.

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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 :: 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?

All surfaces are existing, none are design. (existing ground, grubbed surface, bedrock surface)

How I miss LDD.

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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

I have an existing topo surface created as well as grading for a proposed elevated pad of earth done in civil 3d 2013. I simply want to calculate the cut and fill quantities. I created the grading with automatic surface creation checked on. When I use volume tools to see what the quantities are, it says 0.0 for both cut and fill.

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

I created a grading and a surface for a pond that is abotu 30' away from a roaway that has a seperate surface.  What would be the best way to connect the two surfaces?  I need a uniform slope from the edge of pavement to the top of berm of the pond.

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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.

When I plot them individually the surface plots fine.  When I publish them using the same page setup, the surface will not plot.  The contour labels do plot, just not the actual surface contours.

The surface is data shortcuted from another file.

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AutoCAD Civil 3D :: Junction Corridors And Surfaces

Oct 17, 2012

I've changed my workflow slightly and have created 4 junctions via the wizard but kept them all in the same Corridor (previously I kept each one in its own corridor).

I now need to create the formation surfaces for the corridor (in the way I always have done it) but only one of the junctions has a surface. I then added a show boundary and the "missing" surfaces appeared but with many connecting triangles and superfluous triangles in the curved areas.

How to get a nicely shrink wrapped surface or is it a matter of brute force removal of triangles etc? 

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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 :: 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 :: 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.

Earlier I got some problems with some surfaces of the new construction that unwanted connected together. This time I want to get control of all small new "constructions" (parcels and roads) and connect them to the surface. I realize the original surface will be covered 100% of new terrain. How will I be able to connect all the surfaces together so that I can eventually create a single surface with all the new designs? (and run the waterdrop :-)

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.

The question is therefore: Does the XML output contain sufficient information to allow the other package to "join the dots" in the correct way so as to mirror the original 3D faces and thus create an exact copy of the DTM??

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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