AutoCAD Civil 3D :: Automatically Creating Breakline From Existing Surfaces?

Nov 15, 2012

Our company, was contracted to create a DTM of a residential neighborhood using our Lieca HDS C10 Laser Scanner.  Utilizing the Leica software I was provided LandXML file that contained a 2ft by 2ft Mesh surface along with breaklines for the edge of roadway, driveways and sidewalks, which was imported into Civil 3D 2012.   

Our client now wishes for us to provide them with a breakline for the crown of the roadway.  My first thoughts on calculating such breakline was to set the Contours at an interval of 0.05' to identify the crown of the road, then drawn the break line along the crown based on contours. 

Is there a way to automatically create a Breakline from Exisitng Surfaces? 

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AutoCAD Civil 3D :: Creating Surfaces With Existing Drawing With Polylines

Apr 18, 2012

Trying to create a surface with an exisitng drawing with 3D polylines. Trying to change the suface style with no luck, the only style available is Standard?

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AutoCAD Civil 3D :: Creating Surfaces From Existing Contour Map For Volume Calculations

Aug 30, 2012

I am working on a project, I was given a file with the contour already mapped out. I am tasked with finding volume of a fill I had to create. I made a 3-D polyline at the elevation I want my fill to start from and going down to my final grade. How can I make surfaces with my map. I do not have any files to make the surface off of. What is the easiest way I can make a layer, TIN has already been done but no surfaces are in the file.

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AutoCad 3D :: Creating 3D Solids And Surfaces From Existing Objects

Jan 10, 2013

What method will you choose to create 3D solids and surfaces from existing objects in autocad?

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AutoCAD Civil 3D :: Calculating Volume Using 2 Existing Surfaces?

Jun 9, 2013

I have create my surfaces and now need a volume between to two surfaces.  I created the surface by using the Surface/Create TIN Surface tool for both my OG and the surface after material has been imported.  I have gone to the volume dashboard and it will not let me add existing surface. How do I calculate the volume?

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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 :: Creating Inside Masks On Surfaces

Sep 19, 2013

I'm modeling a couple different alternatives, and I want to make an inside mask on EG where my FG surface will be.

Is my workflow the problem, or are surface masks just buggy? 

I've created three EG surfaces, EG-1, EG-2, and EG-3.  I pasted the dref'd EG into each one, so now I have three copies of EG, one for each design option.  Each surface is on its own layer.

I have three FG surfaces, one for each design, FG-1, FG-2, FG-3.  I want to use the outer border of each FG in turn to make an inside mask for its respective EG surface. I can make one, masking FG-1 out of EG-1.  When I move on and try to make the mask for FG-2 to mask EG-2, no mask is created. Is it not working because I pasted the same original EG into each of the three EG option surfaces? Do I need to promote the original dref'd EG and copy it two more times, so each mask is applied to a completely unique surface?

Win 7E 64-bit, Intel i7, 12 GB
C3D 2012

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AutoCAD Civil 3D :: Creating Thickness Contours (difference Between 2 Surfaces)

Mar 1, 2012

I have created 2 surfaces of a matierial that is buried, using drill hole data.  I have a surface for the top, and then a surface for the bottom of this material.  I then created a 3rd suface comparing these 2, creating an isopac contour showning the thickness of the material.  My question is this:.....is there a way to make the zero (0) contour show up?  I have a .5 contour interval, but 0 doesn't generate.  Could i be missiing something in the settings? 

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AutoCAD Civil 3D :: Creating Points Displaying Cut / Fill Depth Between Two Surfaces?

Oct 18, 2013

I created a volume surface between the as-built and design surfaces, now I would like to show the points that display the cut/fill depths between these two surfaces.  I tried modifying the surface property of that volume surface but doesn't seem to offer what I want. 

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

Jun 11, 2013

I have been given a survey on AutoCAD which was orginally 2D with the levels written in text next to it. I changed each point (690) to include the level in the Z-direction. I am trying to calculate volumes of topsoil removal and then cut anf fill volumes. 

So I opened up Civil3D in metric template and imported my drawing as I have not been given a ddata file with the co-ordinates. Unfortunately I am having trouble creating a surface between the existing points. 

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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 A Surface From Existing Points?

Jan 16, 2013

I am having some trouble creating a TIN from a point layer in Civil 3D 2011. Would the best course of action be to extract the points from the drawing and creating a surface from there, or is there a way to create the TIN around the existing points in Model space?

I'm much better versed in AutoCAD, but excited about furthering my understanding with Civil3D.

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AutoCAD Civil 3D :: Creating Existing Profile From Survey Data

Nov 14, 2013

I am fairly new to the Civil side of AutoCAD, as I used to work primarily in Map.  I am working on a street rehab project in which I need to take survey points showing existing elevations (centerline, flowline, and top of curb) and show existing profiles in a profile view.  I have no problems setting up the profile view(s) or the centerline alignment, but I am having problems with creating the profiles themselves, and I have a two part question about them

Question 1: According to the user's guide, the correct way to set up an "existing" profile is by extracting it from a surface, but I don't have a surface to use.  In reading through the various profile types, the best way to set up what I want seems to be by using the profile layout tools, but the help says that a profile layout is supposed to be for a final "proposed" profile, not the existing.  Does this actually matter?  Will I be breaking Civil functionality by creating an existing profile using the profile layout tools?

Question 2: In reading through the profile layout tools, everything seems to be centered around PVI's.  Even using the "tangent tangent" method to add in points seems to only use the first and last point as controls, with everything in between treated as a PVI.  If you look at the documentation here, points one and four are treated as actual elevations, while curvature occurs at points 2 and 3.  In my case, since what I have is a series of actual points on a surface, each point should be an actual surface elevation with curvature occurring between points and not at them.  What method should I be using to input the points in the profile?

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AutoCAD Civil 3D :: Creating Existing Pipe Network From Objects

Nov 3, 2013

I am working on creating an existing pipe network (stormwater) from objects, invert data, size, type and length given.  M

My question is how do I know where the start and end is and if I need to create more than one network for my project.  I have a current project location and I am assuming I am to create a network for the entire location?

I have attached a couple pics for you to see what I am working with at a couple different scales so you can get a good idae of my project.

C3D 2014 SP1
DELL Precision T3600
Intel Xeon E5-1650 @ 3.20GHz
NVIDIA QUADRO 4000 Dual Monitor
32 GB RAM / Win7 Pro 64-bit

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AutoCAD Civil 3D :: Creating Profile Along Lowest Point In Existing Ditch

Aug 21, 2012

In highway construction, I usually check for lowest ditch elevation and see how the existing drainage flows. Typically one would create or specify in CL profile creation with a 15m offset right and left which would then generate existing CL and 15m offset profiles in profile view. However, the 15m offset profile might not represent the lowest point in the ditch as the lowest elevation offset distance varies along the highway.

My question: Is there a way in civil 3D profile creation where it can automatically trace the lowest elevation in the ditch and plot it in profile view? 

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AutoCAD Civil 3D :: First Time User Creating Contours From An Existing Survey File

May 30, 2012

trying to create contours from an exiting survey file. I am new to Civil 3d 2012. What I need to accomplish is create a 3d topo from the points with contours and then create a 3d model of the area.

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AutoCAD Civil 3D :: 2011 - Creating Existing Curb / Gutter Spot Grade

Mar 21, 2012

creating a existing surface single Curb/Gutter spot elevation label using two existing surface elevation points and not cogo points.   I am a surveyor, and I want to be able to just click on both points one at a time (top of curb/gutter) to place the elevation label.  

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AutoCAD Civil 3D :: Editing Breakline Within Surface

Dec 3, 2013

I have a point in my surface that has a bad elevation. My question is this, I unlocked the points and edited the point containing the bad elevation and I am wondering why my surface is not automatically updating. I have a breakline in the surface that uses the "bad" point and by editing the point to the correct elevation, I was assuming that my surface would automatically update, which did not happen, so I selected the breakline and edited that also to the correct elev., and the surface still did not update until I chose "rebuild surface" even though I had "rebuild surface automatically" turned on, so I am a bit confused.

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AutoCAD Civil 3D :: Delete A Breakline And Keep It In The Drawing?

Dec 12, 2011

I have a feature line in my drawing. It is one of over 1000 breaklines in a surface. I want to delete it from the surface but keep it in the drawing. How do I do this?

In 2009 this was easy. I could erase the featue line then use the OOPS command to get it back in the drawing. Unlike the UNDO command, OOPS did not put it back in the surface definition. This was a wonderful feature/bug. In 2012 OOPS behaves the same as UNDO.

I found this post regarding finding a breakline in the surface definition but that is not realistic with 1000 breaklines.

Here are a few options I have tried:
 
Delete all breaklines from the surface and add the ones I want. (This is my best option so far.)Copy the featureline to the clipboard, erase it, then paste it back in. (Copying feature lines to the clipboard, or wblock, is very slow. The feature line should be moved back to the orignal site.)Explode the feature line into a 3D polyline and then convert back into a feature line. (Good option but does not work well for curves.)

Civil 3D 2012 SP3 | Win 7 64-bit SP1
Xeon E5-1620 @ 3.60GHz, 16GB Ram | NVidia Quadro 600

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AutoCAD Civil 3D :: Remove Breakline From Surface Using .net API?

May 3, 2012

I see BreakLinesDefinition prop, but only add methods.

I assume the RemoveAt is of no use, as you cannot get the objectID of each breakline to decide if its one that should be removed.

COM is the only way it seems.

[URL]

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AutoCAD Civil 3D :: Get Original Vertices (vertex) From Breakline

Nov 5, 2013

I would like to get original vertices(vertex) from breakline.

With  SurfaceBreakline.Vertices  property I can get a ObjectId collection of them but generally will contain more vertex that original vertex because it depend of "weeding factor" values and "suplementing factor" values.

How can I get only original vertex from breakline?Perhaps, API should have other property to get only original vertex from breakline.

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AutoCAD Civil 3D :: Surface Drawing Triangles Across Breakline

Jan 6, 2014

i am trying to add as a breakline. i have not been able to get this particular line to work as a breakline and the surface keeps drawing triangles through the line like its not even there. The figure properties show that it is a breakline. The figure prefix database brings the line style in as a breakline from the start.

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AutoCAD Civil 3D :: Create A Separate Surface Inside Breakline?

Jul 2, 2012

I have created a breakline from a feature line which cuts the triangles of my surface. Is there any way to create a seperate surface from the triangles inside the breakline.

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AutoCAD Civil 3D :: Surface Display Disappears When Breakline Added

Sep 24, 2013

After adding 9 or so breaklines, the display of my surface (e.g. contours) disappears when I add the next breakline.  Based on the surface elevation shown at the pointer location, the breakline seems to have been added and the surface rebuilt. 

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AutoCAD Civil 3D :: Adding Data To A Surface / Non-Destructive Breakline

Nov 7, 2012

When adding data to a surface, there is the option to add it as a "Non-destructive" breakline. [URL] .....

What is this good for? I created a surface, copied it, and created a volume surface between the two of them. As expected, the resultant volume was 0.

I then draw a 3d polyline and snapped to elevations on the surface. I then took that 3d polyline and moved it up 5'. I then added that breakline to the surface as a "Non-destructive" breakline and the resultant volume between the original surface and the one modified with the new breakline was still 0. Absolutely no change was made to the actual surface, it just added additional triangles. 

I'm trying to find a reason it's even option and I'm coming up blank. There has to be SOME reason it's there.

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AutoCAD Civil 3D :: API / Delete All Breakline Sets Included In Definition Of Surface?

Oct 29, 2013

I want delete all breakline sets of one selected surface using API.

There is "SurfaceOperationAddBreakline" but I don´t find "SurfaceOperationDeleteSetBreakline" for example.

Is there other way to delete all breakline sets of one surface?

Later, I want to create one set breakline for each layer which has been selected by user.

I know that I can use qselect, but I want do this process automatically.
 
Autocad Civil 3D 2014 +SP1
Quad Core Intel i7 3770-cpu 3.40Ghz.
ssd samsung 840 pro 512gb+ssd samsung 840 pro 256 gb+1tb hdd
32gb RAM 1600 Mhz.
nVidia Quadro 2000.
Win 7 Pro 64bit

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AutoCAD Civil 3D :: Remove (delete) All Breakline Sets Included In Definition Of Surface

Oct 30, 2013

I would like remove(delete) all brealkine sets inluded in definition of surface.

 try
{
Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;

[Code]...

However, I don´t understand how I can get type of Surface Operation..

This code line doesn´t work.

if (OperationColl[i].GetType().ToString()== "SurfaceOperationAddBreakline")

Autocad Civil 3D 2014 +SP1
Quad Core Intel i7 3770-cpu 3.40Ghz.
ssd samsung 840 pro 512gb+ssd samsung 840 pro 256 gb+1tb hdd
32gb RAM 1600 Mhz.
nVidia Quadro 2000.
Win 7 Pro 64bit

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AutoCAD Civil 3D :: Error Adding Breakline Message When Editing Surface With Feature Lines

Jul 11, 2012

I am working on a 6 mile highway project whose surface file is 85MB big. So, I created a Data Shortcut of this surface and used this for creating profiles. However, at some locations the corridors go below the surface(as per their original profile) which was not intended. So, I need to restrict the surface to follow the corridors but not go beyond it.

I have created feature lines from corridors and tried to add them as breaklines to the surface. But " error adding breakline" error pops up. 

Is it because I am trying to add the breaklines to the mirror surface which I created from Data Shortcut ??

Will it be useful if I copy feature lines to original surface file and add these feature lines as breaklines in that file??

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

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AutoCAD Inventor :: Creating A Solid From Different Surfaces

Sep 6, 2012

I'm having trouble creating a solid from different surfaces. 

I already tried the surface stick, but it seems that it is still not a solid. (How can I check this?) The part is still yellow. If I try to apply the sculpt feature it says: 

Modeling failure: A valid body cannot be constructed based on the selected inputs.

It 's a quiet complex shape. You find here: [URL].....

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AutoCAD Civil 3D :: Create All New Existing Surface Over Existing Ground

Sep 28, 2012

I'm trying to create an all new existing surface over existing ground. I have a TIN surface of the EG, and I have drawn overlay splines that describe the new surface, but how to go about creating that design surface.

It is a compound surface, open on one end and closed all around on the other, somewhat like a half of a football stadium, but with an irregular upper edge because I am needing to figure out cuts and fills to manipulate the EG into this new surface without costly major terraforming. There is about 40-50' vertical elevation between the "field" and the upper rim with a generally constant 7-10 deg. slope all around. I'm just at a loss to figure out how to approach this project, and am quite new to Civil 3D.

Civil3D 2013
MacBookPro 17 - 2.4GHz Intel QuadCore i7 (Late 2011 build)
Microsoft Windows 7 64bit
350GB Bootcamp volume

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AutoCad :: Blank Sheet Automatically Opens Along With Existing DWG File?

Mar 11, 2013

A blank sheet automatically opens along with an exisitng DWG file opening. How do I stop autocad from adding a blank sheet into an existing file opening and closing ???

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