AutoCAD Civil 3D :: Assigning Elevations To Line Of Points Based On Surface?

Sep 11, 2013

I have a surface made by a wide array of points and a line of points that i need to use that surface to assign elevations to ..

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AutoCAD Civil 3D :: Interpolating Points From A Surface Based On The Sample Lines

Jul 21, 2013

I wanna interpolate points from surface but only in that area where my sample lines intersecting with the surface. There is a point creation tool that makes this based on polylines but I have to many data and it will get to much time to do this. So, for better understanding I attached some pictures, in the first picture it is shown the final result which I have made based on polylines, but here is also a problem, the tool is not putting points where the surface is changing ( on my second picture I highlighted with red circles). 

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AutoCAD Civil 3D :: Assign Feature Line Elevations From Points

Sep 13, 2013

Given a feature line/polyline(FL/PL) and a series of points directly on the FL/PL, how can you assign the elevations of the points to the vertices of the FL/PL?

Without using a surface?

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AutoCAD Civil 3D :: Adjust Invert Elevations Of Pipe Based On Cover Depth

Dec 20, 2012

Simple program that will adjust invert elevations of a pipe based on the cover depth.

I have a existing uitility maps that only label the the cover depths. I have to show these utility crossings in my profile views. I have different rules set up for various depths when laying out my crossing pipes in plan, but I need the ability to to edit the various cover depths  more quickly. I am using Civil 3d 2012 only.

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AutoCAD Civil 3D :: Points Names Without Assigning Point Numbers

Jun 15, 2009

I'm trying to import a GPS coordinate file where our Surveyor has used both Points Names (Alpha-Numeric) and Point Numbers. see below. I have setup a Point File Format for Pname, North, East, Elev and RAW Description, to import this comma separated point file. The problem is that Civil 3D does not want to seem to use a numeric point name as a Point Number, instead the number is used as a Point name and Civil 3D assigns a Point number from the next availible point number. Is it possible to automatically, when the Point Name is a numer only to also assign it the same value as the Point Names?

I would really want Civil 3D to allow users to use Both, Point Names without assigning a Point number.


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AutoCAD Civil 3D :: How To Know Surface Elevations

May 3, 2012

In C3D 2012, when I needed to know what elevation a surface contour was at, I simply hovered my mouse near the point in question and a small window would tell me what elevation my mouse was hovering at. Now, in 2013 I am trying to do the same thing but the little window only has the name of the surface and no elevations. So, how am I supposed to know surface elevations on the fly? Is there some setting to turn that back on?

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AutoCAD Civil 3D :: Scaling Points Without Changing Elevations

Oct 28, 2009

Any way to scale points, and or objects in a 2 dimensional manner only? I've got a bunch of survey points imported from a csv file, and they are at a grid scale. I need to scale the data by a factor of 1.000125 in this case to get ground distances between the points for the client. I do not want the elevations to change.

In LDDT this was not an issue as I always had the points inserted at zero elevation, but they maintained the elevation data as part of the point. It seams that in Civil 3D my points automatically appear at true elevation, so when I scale a group of points, the elevations changes as well as the elevation of any lines connected to the points. Is there a way to work 2 dimensionally with 3D data?

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AutoCAD Civil 3D :: Delete Zero Elevations From Surface?

Feb 1, 2013

I graded a commercial site with mostly feature lines. I added points where I needed them to get everything to work. After modifying my surface, I suddenly have zero elevations randomly throughout my site. They don't make any sense why they appear. Some are just added to my drawing and others are existing points that were changed to zero. I can go to a back up drawing from a few hours ago and redo some grading, but I would like to know if there is a way to just erase zero elevations from the surface. I remember LDD was able to create surfaces ignoring elevations below a set elevation.

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AutoCAD Civil 3D :: Make 2D Plines Take On Elevations Of Points At Their Vertices?

May 9, 2012

I know there are different ways to do this.  Would like to know multiple options so I can see which might be quickest for me.

I have points with elevations and 2D plines at elevation zero drawn between them.

I would like 3D plines instead.  This is the easiest way for me to transfer them to another drawing where I will make surfaces with them.  I don't want to have to transfer the points over.

I can redraw the plines as 3D plines but this is time consuming and seems unecessary.

I don't want to have to convert them to Feature Lines either.  I prefer they be 3D polylines.

Is there a simple command for this?  I already have a surface containing the points and lines as surface breaklines.

Is there a project objects to surface command that will make these 2D plines at elev 0 into 3D plines while assigning elevations (and vertices) only at the current vertices?

What about a simple series of commands to convert the 2D plines to 3D plines, then force the 3D pline to take on the elevations of the points at its vertices?  (I think this would be my preference, but don't know any of these commands or where to find them.)

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AutoCAD Civil 3D :: Rotating Points Elevations Change Tool?

Feb 29, 2012

By rotating points elevations change too!? I wonder what I am doing wrong!?

Just starting using Civil 3D 2012 version.

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AutoCAD Civil 3D :: Large Surface - Converting Points To Cogo Points

Mar 5, 2013

I have a large surface (over 1.5 million points and 20 000hectares)

I need to get a point file .csv from the TIN to be able to use it in another program.

-so i've extracted the points from my surface, but they are Autocad points.

-next step is to convert them to civil 3d points.

-I can not select them all when converting them or my computer crashes.

-so i select about 25 000 at a time, the converting takes roughly 10 minutes.

and i have over 1.5 million points to do.

how can i speed this up.

will more ram useful?

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AutoCAD Civil 3D :: Surface Elevations Table Colors?

Nov 29, 2012

Is there a way to lighten up the colors of my surface slope analysis that the rainbow gives me?  My drawing will be going into a report and the colors are too bold.  Pastels are a bit too bold. 

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AutoCAD Civil 3D :: Copy Surface Spot Elevations

Sep 6, 2012

In 2012 I can no long grip a spot elevation RC copy. It just ignores it an moves it to the new location.

Is there a setting I might have to re-set?

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AutoCAD Civil 3D :: How To Project Lines And Curves To A Surface With Elevations

Apr 25, 2013

Civil3d 2012 - is there a way to project standard autocad lines and curves to an existing surface to the lines and curves end up with the surface elevations?  we are trying out that wants 3d lines exported in a dxf file.  We have a surface and we have the's just that the linwork is all at 0 elevation.

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AutoCAD Civil 3D :: Creating A Proposed Surface With Bottom And Top Elevations?

Jun 26, 2013

I have a existing surface. I want to create a proposal surface so I can know the volume between boths. This proposal surface is represent for a disposal area that can be filled up to a elevation. I have a bottom of P-surface as a feature line at EL 1608, and I want top of P-surface to EL 1613.

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AutoCAD Civil 3D :: Create Surface From LandXML - Negative Elevations?

Jun 8, 2012

I've created a surface into Civil3D by importing a LandXML file created from contours in a .dgn file.  When I create profile views for the alignments, the elevations are shown negative (-500 to -20) where as they have to be in between 500 to 670. Also when I run the surface elevation analysis, all the elevation are shown in between 1000 to 2200 inches as shown in the figure attached.

Am I missing any conversion or some settings when importing the surface. 

Windows 7 x 64
Nvidia Quadro 2000
24 GB Ram
i7 960 @ 3.20 GHz
Civil 3D 2012

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AutoCAD Civil 3D :: Custom Color Range For Surface Elevations

Apr 2, 2012

I've got a number of scenario diagrams to produce where I want to show the volume of material to be dredged from a harbour. There will be no "fill" just cut. In some parts of the area of interest the existing ground is below the target depth, so these holes wouldn't need to dredged further.

Two question:

1. Given that the area in question contains cut areas, but also other areas that I don't want to fill. What is the best way to get a good surface map and volume estimation? Currently, I create a feature line surrounding the entire area to be less than the target depth, set the elevation of the line at that depth, then grade to surface and add an infill. This gives me cut and fill volumes (for the deep holes), of which I ignore the fill number. Is there a better way??

2. I've created my TIN volume surface (comparison of EG with the graded depth surface). Now I want to present the maps with "range interval with datum", so the cut volumes are shaded increasing from (say) yellow to red, whereas for the "fill" areas I don't want to show anything (transparent would be ideal or maybe greys). Is there a way to create customised color ranges for the elevation analysis? As I'm doing numerous maps I don't want to be manually editing and re-editing the analysis range details. I'm using AutoCAD C3D 2012.
Civil3D 2013 (infrastructure suite)
Self-built i7-3930K, 16Gb RAM, P9X79 m/board
SSD(system), HDD(data), GTX680, Win7Pro64

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AutoCAD Civil 3D :: Adding A Building Block With Elevations To A Surface

Sep 4, 2013

When working with multiple building pads and configurations change rapidly. Is there a method to add a Block or Xref into a Civil3D Surface under Drawing Objects? If so, how could you do it.

I want to have a building block type 1 that I can update the block or xref then updates the surface rather than doing each one individually. The Block would have a FFE of 0.00 and then the stoops, etc would either be a 0.1 drop or so.

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AutoCAD Civil 3D :: Surface Elevations - JPEG Image File

Apr 11, 2013

I am trying to edit the elevation of a JPEG image I have brought into my C3D 2010 file as an xref - I essentially want to 'drape' the image over the existing ground surface I have created to use for presentation purposes i.e. to show how our road layout is predominantly located along the ridge lines of the site.

Typically for other file types I would perform the following steps (using the classic toolbar): Grading > Edit Feature Line Elevations > Elevations from Surface > Select the existing ground surface > select object.

I don't seem to have the ability to select my jpeg xref using this approach... how else can I perform this task?

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AutoCAD Civil 3D :: Make Sure Annotated Surface Labels Spot Elevations From 3D Design Drawing

Dec 19, 2013

How can I make sure the annotated surface labels spot elevations from my 3d design drawing which is being xrefed into a new Precise Grading Breakout Sheet plots screened?

The Label Style which I created for the annotated surface label spot elevations has all its properties set to be ByLayer for example its color and lineweight.  The Layer I assigned the Label Style was assigned to a layer with a color and plot style that should plot any object screened.  Color 8 and Plot Style Screened.

What other steps am I missing to assure myself that this Label Style will plot screened in my new Precise Grading Breakout Sheet?

I also made sure that the xref drawing in which this Surface spot elevation has the correct colors and lineweights and Plot Styles in my new Precise Grading Breakout Sheet.

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AutoCAD Civil 3D :: Feature Line Elevations

Mar 25, 2013

We are running Civil3d 2012. When converting a line or 3d poly to feature line, or just creating one it adds elevation points where it crosses surface breaklines even if you do not assign elevations. We want the feature to just have 2 elevations. The beginning and end. Is this a bug? Or is there another setting somewhere?

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AutoCAD Civil 3D :: Can't Edit Elevations Of Feature Line

Apr 19, 2012

I Created a Feature Line from Objects (a polyline).  I added it to Site 1, gave it a name, layer.  Do I Assign elevations during creation (conversion options)?

I set the Elevation to 8.5  (NOT From surface)

Then I go to

Modify Feature Line -

Elevation Editor.

Why are the elevations locked?  I want to set them.

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AutoCAD Civil 3D :: Export Point Coordinates And Elevations Along Sample Line

Sep 4, 2012

I'm working on a stream restoration project and we need to determine the x coordinates and corresponding elevations along a stream alignment at certain sample lines.  The centerline of the stream's alignment has been created as well as sample lines for cross sections at 50' intervals. We need the coordinates & elevations of each sample line (cross section) exported into an excel/txt document.

For instance, at station 1+00 of the alignment  we have a sample line.  We need to know to the right and left along that sample line the corresponding elevations and that x coordinate) from the alignment.  Primarily, whole contour intervals but more information would be useful as well.  I was hoping this could be automatically generated.

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AutoCAD Civil 3D :: 97 Contour Pass Through A Closed Feature Line With Elevations Between 97.3 And 97.8?

Feb 23, 2012

How does a 97 contour pass through a closed feature line with elevations between 97.3 and 97.8?

C3D 2011 (latest updates)

Win 7 Pro, 64-bit


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AutoCAD Civil 3D :: How To Edit Feature Line Elevations In Profile View

Sep 26, 2013

I have a finished grade surface and I have a feature line that is my waterline. I created an alignment and then recreated my feature line so they would be linked. I can then create a profile using my alignment and that shows my surface at that alignment. I can even add the waterline by using project objects to profile view. 

I need to be able to edit the feature line elevations in the profile view by creating and erasing PVIs so this will tie back to my geometry.

AutoCAD Civil 3D 2012 SP4
Windows 7 (64)

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AutoCAD Civil 3D :: Import Point File And Assign Elevation Based On Existing Surface

Apr 12, 2012

I have a bunch (hundreds, so manual input not an option) of X,Y points without elevation data that I would like to import into a DWG and assign an elevation that is based on an existing surface object.  Is there a way to do this for a point file? The command for inserting individual points would be the "Create points - Surface > Random" but I don't see a way to do this in a batch type method where i have my PNE formatted input file to just move the points to sit on the existing surface. 

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AutoCAD Civil 3D :: Edit Feature Line Some Elevations Locked With White Triangle

Apr 23, 2012

I have created several feature lines from which I graded to distance or surface.  I am trying to edit all these feature lines raising them by 0.5 ft.  In a few instances, I need to keep some of the elevs while raising others by 0.5 ft.  I am changing the elevation of individual vertices.

Some of the features lines all me to change all the elevations.  But on a few of the feature lines, I can change all the elevations except for one.  The feature line station for which I cannot change the elevation has a white triangle in front of it in the Elevation Editor instead of a Green Triangle like most of the points.  It's clear that the White Triangle means something that is not allowing me to edit the elevation of that feature line vertex, but I'm not sure what or how to fix it so I can edit it like the others.

Also, the Raise Incrementally icon does not work on these points with a White Triangle in front of them / does not change the elevation of them.

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AutoCAD Civil 3D :: Creating Profile Bandsets With More Than 2 Profile / Surface Elevations Shown

Mar 14, 2013

Im creating a Profile Bandset and would like to have multiple surface/profile elevations shown, ie: EG, FG, Back of Curb and Back of walk. While creating this bandset I see that the text component editor properties only has code for profile 1 elevation and profile 2 elevation in the properties area, which the code for this looks like below.

<[Profile1 Elevation(Uft|P2|RN|Sn|OF|AP)]>
<[Profile2 Elevation(Uft|P3|RN|AP|Sn|OF)]>

Ive tried to write my own code using the profile 2 as an example but it doesnt seem to work as a 3rd surface/profile and only seems to mimic the profile 2 elevation when placed in the band

My questions are as follows

1) does Civil 3d only allow 2 surface elevations in any band set? if it does allow more profiles/surface elevations what am i missing to create it? 

2) if Civil 3d does alow for multiple surfaces to be shown in the band set how do i get the text component editor to supply the extra profile elevation codes? or would i need to create from scratch

3) if i need to write the code from scratch does any listing of the codes and meanings of each code ie what does RN, Uft, Sn and so forth do and mean .

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AutoCAD Civil 3D :: Creating A Surface From Points?

Jul 30, 2013

I have a grid survey of points and I've entered these points into Civil 3D.  Now what I want to do is use these points to create a surface so that I can create a slope analysis of the surveyed area.  My problem is that I can't get the points into a point group.  

I have a generic grid (15 x 15) of points set up and I've only used a portion of them (defined by the dimensions of the site).  So I want to create a surface that includes all of the points that aren't set at an elevation of 0.  

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AutoCAD Civil 3D :: Cannot Remove Points From Surface

Mar 29, 2013

I have an "existing" surface built. But there has been some construction since my company surveyed the site. So, my surveyor went out and got the new points in the area of the new construction. I am trying to remodel the "existing" surface without rebuilding the entire surface. I have removed the old (demoed) points from the point group used to define the surface. But, the points are not being removed from the surface.

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AutoCAD Civil 3D :: Extracting Points From A Surface

May 31, 2013

I built my surface by importing points directly, ie, not through the ribbon, so i have no points listed in prospector.  i have been editing the points (mostly deleting errant survey points) and would like to export the final data set.  The only step i found, was to show points in surface style, and then Extract Objects (of which i selected Points).

This seems to have no placed all the points into my DWG, but HOW do I export this files into a single text file??

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