AutoCAD Civil 3D :: Combining Multiple Surfaces To Create Final Surface

Nov 28, 2012

I am creating my Final Grading surface with from 2 surfaces - a proposed road surface and a proposed grading surface.  (Note of roads within the road surface)

The issue is that when I paste the proposed road surface (that consists of several looped sections) over the proposed grading surface, the proposed grading surface within the looped road areas dissappears.

I have tried several options using boundaries for the inner looped areas on my road surface, and has altered my order of opterations for my final surface edits, and many other things also. 

I have attached an image for reference.

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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 :: Shortcut / Routine Required To Create Multiple Surface Intersections At Once

Jul 2, 2012

I am doing bulk earthworks with C3D 2013 and quite often I am modeling large dam walls with multiple raises, core sections, filter layers, etc so I end up with up to 50 surface models in one drawing. The process I follow involves modeling each raise of the wall by targeting an elevation 10 metres or so below NSL. I then use a volume surface to give me the intersecting boundary between the topography surface and the wall raise surface. I repeat this process for each raise/core/filter section - create volume surface to find intersection, extract boundary of intersecting volume surface, add boundary to wall raise surface, put both on a unique layer calculate volume - repeat for next wall raise - ad nauseum.

To speed things up a previous draftsperson created a shortcut button on the ribbon that does the volume surface trick with one click so all i need to do is hit the button, select topo, select wall raise and it gives me the volume surface between the two, all i need to do is extract the border and add it as an outer boundary to the wall raise. I would like to take this to the next level if possible and this is where I an stuck.

If my drawing consisted of a topography surface and "X" number of wall raise surfaces all named in a uniform fashion ascending numerically or alphabetically would it be possible to write a routine/shortcut button that did the following;

1.) Create a volume surface between topo & wall surface 1 - extract border as polyline - add polyline as outer     boundary to wall surface 1 - move both wall surface 1 and newly created boundary polyline to unique layer.

2.) Repeat process for topo and wall surface 2

3.) Repeat process for topo and wall surface 3

.....and so on until all wall surfaces have had volume surfaces created between them and the topo?

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AutoCAD Inventor :: Error - Importing Multiple Surfaces Results In 1 Composite Surface

Feb 16, 2012

When importing objects into Inventor, all surface objects are being joined together into 1 composite surface. What I need is multiple surfaces, or seperate surface/composite objects.

Capture 1

Shows 3 solids imported from Rhino

Each solid is a sepreate solid

Capture 2

Shows 2 solids and 1 surface composite imported from Rhino

Capture 3

Shows 1 solid and 1 surface composite imported from Rhino

1. Why is Inventor creating 1 composite from multiple non intersecting surfaces?

2. How can I avoid this from happening?

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AutoCAD Civil 3D :: Sample Multiple Surfaces For Multiple Alignments

May 18, 2012

I need to figure out a way to sample multiple surfaces for multiple alignments.

Example 1: I am creating cross sections for a river dredge showing the pre-dredge bathymetry, design dredge elevation, and post-dredge bathymetry results. I have 100's of alignments that I need to sample 3 surfaces and display in profile view. Due to the clients requirements for display, using the cross section tools don't work for me, so I have resorted to using a seperate alignment for each cross section.

Example 2: Working in a subdivision with many utility alignments it would save quite a bit of time to be able to choose a group of alignments and sample multiple surfaces in just a few clicks. 

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AutoCAD Civil 3D :: Combining New Survey Points Into An Existing Surface

Aug 28, 2013

Every week I recieve new survey data (typically around 20 points) to insert onto an existing surface of our local landfill.

The surface is displayed as minor and major contours.  The new survey data typically always has higher elevations then the exist surface and shot roughly 2 meters apart.

Here's my issue...when the survey data is inserted and the surface is rebuilt, the contours seem to turn into little cones at each new point.  see attached...

how to eliminate these 'cones' so the surface contours seem more relistic?

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AutoCAD Civil 3D :: Merge Two Or More Adjacent / Overlapping Surfaces Into Single Surface?

Jun 5, 2012

Is it possible to merge two or more adjascent / overlapping surfaces into a single surface?Is it possible to "Delete" multiple surfaces in one go?

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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 :: 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 :: How To Export Contours With Multiple Surfaces

Sep 8, 2013

where the contours of each surface are separated into different layers? Usually it just produces two layers for all of the contours, major and minor.

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AutoCAD Civil 3D :: Multiple Surfaces Lowest Elevations

Apr 30, 2012

I have many surfaces overlapping and I want to create one surface with the lowest elevation for each x,y coordinate from the existing surfaces. Does autocad civil 3D have a command for this?.

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AutoCAD Civil 3D :: How To Figure Multiple Volumes From Two Surfaces

Sep 26, 2013

using CIvil3D to figure volumes.  I have a very large aerial topo from a couple years ago to compare against a topographical survey I completed this year.  No problem creating surfaces. 

Question:  In the topo's, I need to get a volume from two different area being a fill area, the other being the borrow area.  Don't want any volume data throughout the rest of the site.

Do I just create one large surface for each topo and designate boundaries somehow?  Or do I need to create multiple surfaces for each topo?  If this is the case, will I need to make sure any breaklines, etc. don't cross from one area to the other?

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AutoCAD Civil 3D :: Data Bands - Multiple Surfaces Sampling From One Design Profile?

Jun 26, 2013

I have 2 different surfaces (Existing Ground & Proposed Pipe Invert) that I want to have the elevations shown for in a profile data band, but I want them to show at the design profile's PVIs (Proposed Road).  Is it possible to set up a data band style that samples at one profile's geometry points but displays the elevations from these points from a different profile?  My workaround is to set the data bands to all sample from the design profile first and label over the design profile's data band but I'm hoping for a cleaner solution.  Attached is an image showing the profile view in question.

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AutoCAD Civil 3D :: Create Cut Fill Surface From Existing Surface

Mar 1, 2013

Im currently using an addon for Civil 3D called Novapoint. It allows me to create 3D models of surfaces made out of 3d faces and easily models cut and fill 3d-models for me.

The only thing i need to create a cut and fill model is one or several ground surfaces (existing ground, earth layers, rock etc. whatever i need) and a closed polyline/3Dpolyline that represents the level I want my cut and/or fill model.

I enter the spcifications I want such as; earth cut angle, rock cut angle, fill angle, select which surfaces i want to include in the model calculation and select the polyline.Novapoint then calculates the cut/fill model from the surfaces to the polyline and models the different cut/fill angles and gives me the results in a 3d-face model and a specification of the volyme of rock cut, earth cut an fill.

1. Novapoint is quite unstable and crashes alot

2. You cant create profiles out of 3d faces

3. Novapoint does not automaticly combine the start surfaces with the modeled cut/fill surface

4. A large surface made out of 3d-faces demands alot of computer power 

So I want to how I do the same that Novapoint does for me in Civil 3D? (I have access to Civil 3D 2007-2013 depending on which one you're using)I know I can take the 3Dfaces i created in Novapoint and make a surface in Civil 3D with them but I want to exclude Novapoint completely.

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AutoCAD Civil 3D :: How To Create As Built Drawings Using Surfaces

Sep 11, 2013

how to create as built drawinngs in Civil 3d using surfaces

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AutoCAD Inventor :: Create Surface Bodies From Multiple Faces?

Dec 27, 2013

I've currently written an application for SolidWorks that reads file that geometry in the form of faces (ie. 3 or 4 double values that represent triangular and quadirilateral faces).  I am trying to create the same application to work for Autodesk Inventor, but I am having some issues.

First, I am basing my code off from the examples given in the help files.  There's a lot of pointers to objects being to get to the Face creation portion, this seems to be slowing my appliation down considerable compared to the SolidWorks counterpart.  SolidWorks API has a modelling method called CreatePlanarSurfaceDLL that allows me to provide an array of doubles representing the vertex points in order (x, y, Z) for each point, so the array looks like this for a triangle (P1.X, P1.Y, P1.Z, P2.X, P2.Y, P2.Z, P3.X, P3.Y, P3.Z).  Is there anything similar in the Inventor API to simply the process?

Secondly, when using the example, they all have a known "shape" and therefor there are a definied number of vertices, edges, faces, etc.  And when adding the faces, the known points / vertices are used.  In my case, each face contains information for it's 3 or 4 vertices.  I created these using the prescribed methods, but when the final surface body feature is created, and a repair is performed on it, it shows a lot of duplicate edges and vertices.  Do I need to take the time and filter out all of the duplicate vertices, and point to a single vertex that may represent a vertext used by up to 3 or 4 faces?

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AutoCAD Civil 3D :: Islands Of A Surface Using Multiple Boundaries?

Dec 18, 2013

I am trying to create islands of surface by multiple enclosed polylines as boundaries.

Each enclosed polyline has several 3d lines as drawing objects. 

After creating the surface from the 3d lines I use "Select similar" to select all boundaries(enclose polylines) and add them as boundaries using the "Show" option.

However, it is not working and I do not see the islands of a surface.  

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AutoCAD Civil 3D :: Comparing Multiple Surface Volumes

Oct 18, 2012

I have a big hole in the ground in my model.  Its easy to get the volume of cut with C3D.  But I have a topsoil layer, weathered rock layer and then solid rock, I basically need to break them down into different volumes.  The way I would normally do it is calculate the topsoil, then work out the weathered rock and minus the topsoil, then for solid rock cut I minus the topsoil+weathered rock.  I have attached the 3 volumes I need for info.

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AutoCAD Civil 3D :: Multiple Linetypes Per One Surface In Profile?

Sep 17, 2012

i need to transition from a proposed to a future linetype part of the way down my profile. It's the same surface, just that @ station XX+XX.XX it becomes future. I need it a diff linetype to faded back, for example. Is there a way to do that? I'm thinking my only option is two create two surfaces, one propsed and one future. My situiation currently is that I already have one complete surface and would like to know if it's possible.

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AutoCAD Civil 3D :: Multiple Surface Masks For Buildings

Feb 25, 2011

I'm now using a different computer. I have a drawing with an existing surface and contours. I have two buildings on site that I'd like to mask the contours that run through them. I used the mask feature for one of them, but that is the limit. How can I mask the contours so they aren't running through the other building.

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AutoCAD Civil 3D :: Create Surface On Something Other Than WCS

Aug 3, 2012

Can a surface be created from a UCS that is something other than the WCS? For example, can you create a surface for a vertical wall, or a battered almost vertical wall?

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AutoCAD Civil 3D :: Create Surface From 2D DGN?

Feb 3, 2010

I work in both Microstation(PowerCivil) and Autodesk(C3d 2010) platforms, unfortunately not very proficient in either. We use both due to project requirements. I have no say in the format what-so-ever. Now to the point.. I am working on a project thats survey is a 2d .dgn however I am to create a model from this information (which happens to be just text spot elevations no intelligence attached) and supply it in C3d..Is this Possible ?? Or would it be easier to just do it in PowerCivil (I have made surfaces with 2d objects before with) and convert to .dwg upon completion ????

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AutoCAD Civil 3D :: Pipe Network Move Multiple Manholes To New Surface?

Apr 19, 2013

Just as the topic says. I have about 40 manholes referenced to a surface that has no changed and I need to update them. I can go thru one by one and pick "structure properties" and change the surface. I did change the surface under the network options, but they all still reference the old surface.

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AutoCAD Civil 3D :: Multiple Selection Surface Site Grading On Prospector

Aug 28, 2012

When a file has many surfaces, gradings and sites manually delete them is slow ¿is there a method to select multiple sites, surfaces and gradings on prospector and delete them all at once and not one by one?

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AutoCAD Civil 3D :: Create Tin Surface By Cropping

Jun 5, 2012

Any experience with the Tin Surface CreatebyCropping Function.

The specific stumbling block I have come across is the best way to deal with the database that is required to export the new cropped surface to as it has to be different from the current drawing. I don't actually need the cropped surface to be saved but need to be able to adjust elevations and extract the tin from it. The tin would then be used to generate a pregrade surface in the base drawing. Previously I had done this with non-destructive boundaries but I find the cropped surface to be more accurate. 

Civil 3D 2013 - Windows 7(64 bit)

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AutoCAD Civil 3D :: Grading Will Not Create Surface

Jul 19, 2013

I have two separate graded levees in my drawing. One has created a surface just fine, the other absolutely refuses to generate a surface. I've deleted the grading even the feature lines and re-did them. In my grading group I have automatic surface creation checked and the volume base surface checked. I show the surface in the prospector but there is nothing there. The one levee will show contour styles but this one ZIP!

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AutoCAD Civil 3D :: How To Create Offset To Tie To Surface

Aug 17, 2013

I'm creating a containment dike around and island.  I want the berm to tie down to the existing surface, then offset from that tie point 21' to the surface again.  I can do an offset from Baseline, or a tie to an elevation in a profile.  What I can't do is make the offset 21' from the tie location over an additional 21' to another tie point on a surface.

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AutoCAD Civil 3D :: Create Surface From 3D Data?

Oct 31, 2013

I am working in Civils 3D 2014 and I have a survey with points already on the correct elevation layer, I have tried creating a surface from this but it does not show up.

My process:

- I create a new drawing and insert a block (my topo survey) and click explode when I do this

- I create the surface by TIN and make sure I have the correct layer for the points that I am selecting

- Click ok

- Then go into that surface and turn on all layers and refresh - still nothing

- I also made sure that my surface style was 1m contours so I would definately see this.

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AutoCAD Civil 3D :: Create Surface From GIS Data

Dec 16, 2013

I have created a contour layer in MAP and need to bring the data into Civil (to create and EGL surface) which I usually I do via an alter properties query.

There is the Create Surface from GIS data in 2014 but this requires shp files so the two questions I have are:

Can the contour layer be output as shp files (and if so how)?

If yes, is this easier/more efficient than my current workflow?

(No connection with Autodesk other than using the products in the real world)

IDSP Premium 2014 (mainly Civil 3D 2014 UKIE SP1 & Infraworks with some limited 3ds Max Design)
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 :: How To Create Actual EG Surface

Jun 12, 2013

I am start  work in civil 3d 2009,  I have a project started in LDD2009 and am trying to migrate to civil 3d 2009. I have imported the points, tin, and contours but cannot figure how to create an actual EG surface. Can some on etell me how to create and actual EG surface using tthe tin and points.

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AutoCAD Civil 3D :: Grading To Create Dump Surface

Apr 24, 2012

I'm trying to replicate a dump surface from a cad file, but this one is rather different from what i'm used to (more simple and poligonal).

This one is curved and the  top of the platform has inclinations has the picture shows.

I'm having trouble on finding the best way to aproach this dump surface. I tried to start from point 2 with the curved feature line and grade back 2% till EG and then grade forward 10% till it reaches point 3 at elevation (900) , but when i grade forward the sides obviosly dont hit my EG.

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