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 :: More Dynamic Cursor Elevations From Surfaces?

Mar 29, 2012

When you hold your cursor over a surface it will display a window with different surface elevations if there is a surface where your cursor is located.Is there a way to make it display all of the different surface elevations rather than just 6, because I have a few more surfaces that wont display their elevation. Or is there a way to set the order in which they show up? I can get to see what I want to see if I isolate the selected surfaces but sometimes it takes awhile to load up the corridors, etc..

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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 :: How To Have Multiple Elevations On A Single Point

Dec 6, 2012

Is there a way to have multiple elvations on a single point?

Such as with a top & bottom of curb.

I have tried to add a component to the style, assign the name as the control, and put in the elevation

I want, but you can't have multiple points with the same name.

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AutoCAD Civil 3D :: Set Multiple Polyline Elevations For Contour Data?

Nov 13, 2012

I am working on three different projects at once. For each project, I was sent a drawing with contours as polylines. Each contour is broken up into polylines about fifty feet long each at elevation 0. I am trying to set the polylines to proper elevation without editing each one individually. Each drawing contains several hundred polylines to modify. I was hoping for some sort of way to use a fence and interval (2') with a starting elevation.

I've searched the internet but haven't found a lisp routine to do this. I thought I remember Land Desktop having something like this, but can't seem to find it in Civil 3D 2012. I have found several threads asking the same question. Each time the poster was referred to a blog 7629. That blog unfortunately seems to have been taken down. If I can’t find an answer soon, it looks that my best option would be to retrace each contour which makes me glad to be paid hourly.

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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 :: 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 :: 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 :: 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 :: Creating Lowest Surface

Apr 24, 2012

I will try to write this as clearly and shortly as possible.

I have two surfaces created lets call them Surface A and Surface B.

They have different elevations in different areas, sometimes Surface A is below Surface B and other times Surface B is below surface A.

Is there a way to easily create a Surface C which is a combo of Surfaces A and B taking which ever surface is lower?

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AutoCAD Civil 3D :: Finding Lowest Elevation Inside Of Polygon

Dec 16, 2013

I have a need to find the lowest elevation inside of a small rectangular polygon (6'x7'), then assign the polygon to that elevation. This is fairly easily done manually with feature lines, however I need to repeat the operation about 3,000 times to create a design grid (therefore, not obliged to using all of the design budget to do so).

I employed the GIS department to run the analysis, which they can do, however they can't rotate the DEM grid output to match my project because it doesn't run parallel to north/south, thus skewing the results.

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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 :: Connect The Lowest Points Of Series Of Cross Sections?

May 15, 2013

is there a way to connect the lowest points of each cross section, for a series of cross sections, and possibly make a pline or feature line in plan view?

Civil 3D 2013 SP1, Win 7-64 bit

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AutoCAD Map 3D :: Deleting Multiple Contours At Certain Elevations

Dec 2, 2011

I have topography in 5' contours that I need to shrink down to 20' contours (ex. Elevations:4670,4690,4710)

Is there some sort of quick selection I can use to select the elevations I need to delete? 

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AutoCAD Inventor :: Embossing Onto Multiple Surfaces

Dec 18, 2012

Is there any way of embossing onto

1. Multiple faces
2. surfaces that are not flat, cylindrical or conical

I have tried using the “stitch surface” command but I can’t seem to get it to select .

The surface was created using the loft command, but I don’t know how to select it as a composite surface . When I am doing the emboss. Maybe it has to be done using another method besides emboss?

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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 :: FG Elevations At Alignment

Sep 12, 2005

. How to assign proposed elevation to layout alignment along each station?. I know there is a way in LDT to assign proposed elevations to s specific range of stations or the full alignment, under menu "profiles/ FG Vertical Alignments/Create COGO Points" I am looking for the same one in C3D.

2. How to add connecting alignment label and station in profile view. For example I have an main alignment and in-between lot of other alignments are meeting with this alignment.

I want to show in profile view of the main alignment the meeting alignment's name and the station it meets with?

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AutoCAD Civil 3D :: How To Get Precise Elevations

Dec 1, 2013

How to get precise elevations at lowest and highest points. I need to get spots where  the water flows and its precise elevation at that spot as analysis.

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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 :: Calculating Volumes Between 2 Elevations

Nov 20, 2013

We have a good size channel and the section for the channel varies quite a bit.  We want to find the volume excavated in the channel between 2 elevations (it is the area of sand per the goetech report)?  A template was not used to create the channel surface, breaklines and gradings were used.

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AutoCAD Civil 3D :: Change All Point Elevations

Sep 2, 2013

Sounds simple enough, but how would I subtract 2.300 from every point elevation?  

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AutoCAD Civil 3D :: Determine Elevations Along Slope

Dec 3, 2013

I need to project a surface/grading (or something of that nature) across my berm and have it intersect with the inside bank. This is better explained if you see the attached image. In the plan view you see 4 featurelines. Outside TOE, outside TOB, inside TOB then inside TOE. I need to project the outside TOE across the berm (shown in the section view) then create a new featureline where the line and inside slope of the berm intersect. Note that all the elevation shots vary as does the widths across the berm. What's the best way to do this?

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AutoCAD Civil 3D :: Point Groups Elevations

Feb 28, 2013

I have two different point groups that I am using in my drawing.  One is from a survey done a few years ago and the other is from one that I did just the other day. 

I don't have a problem inserting the points or whatnot, but the issue I am having is that when I click "Datum" to adjust the elevations of my new point group (to make my benchmark 100.00'), Civil 3D alters all of my points; including the ones from the older survey. Is a way to adjust elevations to only one set of points.  

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AutoCAD Civil 3D :: Survey Figure With Bad Elevations?

Jun 29, 2012

I have a survey figure that no matter what will not come in with the correct elevations, its a spline (continous) curve that the elevations get blow up on.

Only thing I can think of is the when it starts to interpolate the curve it cant get the elevations correct, this only happens in the curved area, once it goes tangent everything goes back to normal.

Win7x64 6gb

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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 :: Elevations On A Curved 3D Polyline?

Aug 13, 2013

I am working on laying out data for some survey crews along the centerline of the road.  I have a BC and EC elevation, but the vertices along the CL are at different elevations, which were the original elevation of the poly line before being transformed into a 3D polyline.  Is there an easy way to make the full line follow the slope from BC to EC other than manually shifting the vertices?

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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 :: Elevations Change During Insertion Into Drawing

Jun 21, 2013

I have imported a survey file.  When I insert the points into the drawing, the elevation changes to something that isn't even recognizable.  When I view the point in the survey tab, the elevation is correct, when I view the point in the prospector tab it is different.

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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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