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 :: Can't Get Datum To Stop At Corridor Boundary

Dec 5, 2012

I've set the corridor's surfaces to use the corridor boundariy & the datum's overhang correction to top links & bottom links, but for some reason it doesn't respect the corridor's boundary. 

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AutoCAD Civil 3D :: Super Elevations - How To Get Corridor To Follow Default Crossfall In Assembly

Dec 13, 2012

I did a user defined super for my road.  This worked well.  However when I deleted the super data.  To try something else.  The corridor shows 0% camber or crossfall.  How do I get the corridor to follow the default crossfall in the assembly again?

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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 :: Can't Use The Corridor Surface As DATUM Surface

Feb 7, 2013

My problem added with pic ... I want to make volume calculate for sample road project. When I try to  compute materials I cant use Corridor surface for DATUM... There is only target surface on option..

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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 :: 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 Inventor :: Changing Default Datum ID On Datum Target From A To Z?

Dec 4, 2012

We do not use "A" as our default datum ID.

Instead of manually changing this each time I place a Datum target can I change the default?

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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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AutoCAD Civil 3D :: Create A New Datum Conversion?

May 15, 2012

how to create a new datum conversion, but it has six parameters...It is a similarity transformation i want to put in a new configuration.

following data are:

centroid: x=453106; y=7076452

traslation in X=-179.2

traslation in Y=-386.302

scale in ppm= -832.154

ang in rad = 2.5*10^6

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AutoCAD Civil 3D :: Datum In Compute Material

Oct 18, 2012

“Datum” in the “compute material”,

I’m not sure about the correct choice for the “datum” to proceed in plotting “mass haul diagram”

What might be the proper selection for the “datum”?

Software: AutoCAD 2014, AutoCAD C3D, AutoCAD M3D, Revit
Windows 7 (Ultimate 64 bits),
Firefox 20.0,
Kaspersky 2013.

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AutoCAD Civil 3D :: Plot Profile Below Datum

Apr 14, 2012

I have a profile view that shows two ditch profiles in it, for right and left ditch.  They are similar in elevation, so they overlap some in the profile view.  Is there a way to show one of them at a set interval below its actual datum, like say, 5'?  Short of drawing in a dummy profile or expolding it - which I'm going to do shortly....

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AutoCAD Civil 3D :: Existing Elevation Labels At Datum And Top Grade Breaks?

Aug 28, 2012

i created section view as in pic1. In Bands, Existing surface elevation labels at existing surface grade breaks, top of road elevation labels at top grade breaks, datum is the same. Can i add existing surface elevation labels at top of road grade breaks? (pic2)

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AutoCAD Inventor :: Creating A Globe With Protruding Continents?

Sep 19, 2012

I'm attempting to create a spherical globe with continents uniformily protruding from the surface (say 1 or 2 millimeters). I've given it a few tries, but every method I've used either fell short or resulted in huge distortion. There are really two signifcant hurdles, the first being etching the continents onto the globe, and the second being giving them a greater diameter than the globe.[URL]

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AutoCAD Civil 3D :: How To Follow Each Peak Of The Surface

Nov 9, 2012

we are missing tool in SAC  for stripping a surface exactly the same way how Stripping Pavement or Striping TopSoil works. There is no tool to copy and vertical offset part of the surface. I found out some workaround with Point Delta X on Surface and then vertical Offset, but this is very complicated and I am not able to follow each peak of the surface. Surface link is not suitable for Topsoil stripping.

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AutoCAD Civil 3D :: 2013 Line Does Not Follow Osnap?

Feb 25, 2013

When trying to draw or stretch a line or grip along an object in 2013 it does not follow the osnap like it does in 2012. For instance if I draw a line and then want to draw another line from the beginning of that line along that line using the nearest osnap and inputting a distance, the line follows the cursor rather than the snap.

Civil 3D 2013 SP1
Win 7 x64 SP1
Intel Core2 Duo 2.67 GHz
NVIDIA Quadro FX 3500

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AutoCAD Civil 3D :: Pressure Pipes Follow A Surface

Aug 22, 2013

I am trying to create a pressure pipe network (right now I have 2 pipes) and have it follow a surface. When I click to follow surface it lowers the vertices but does not add any additional vertices to make the entire pipe network 5' below surface. My pipe lengths are set to 18' and the surface I want to use is set in my network properties.

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AutoCAD Civil 3D :: Getting An Assembly To Follow A Top Of Curb Profile

Nov 6, 2012

I am trying to get a street assembly to follow a top of curb profile.  The profile is at the face of curb.  The centerline of the street is my assembly target profile and alignment.  I do not want to create an alignment for the curb.  The curb profile is based on the centerline alignment.  I can't figure out how to get a link that will track the curb profile at the face of curb.

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AutoCAD Civil 3D :: How Does Contour Follow Command Work

Mar 28, 2013

I got a scanned image and wanna to get contour lines from it, so i'd like to know how does "Contour Follow"  command work in A.C. civil 3d???

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AutoCAD Civil 3D :: Pressure Network - Don't Follow Surface Anymore

Jan 31, 2013

So, I really like the ability to have a pressure network pipe follow a surface but, what if I no longer want the pipe to follow the surface? Is there any way I can get rid of all the extra grips that are added to the pipe in the profile? The only way thing I've come up with is to delete the pipe and recreate it.

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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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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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