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 :: Creating Proposed Surface Out Of Contours

Nov 8, 2013

The engineers at my company digitize proposed contours in a drawing and then they want me to create a surface out of the contours....the contours usually are 2 foot contours with areas that the software tends to translate based on the contours that I selected to create the surface.....I then usually need to create a profile, which does not look accurate compared to the contours, such as low spots etc...............

My question is since the engineers at my work do not how to use the software, and I am not an engineer, making the profile look a certain way sometimes needs to be tweeked by me.... How to alter the proposed surface?I am pretty sure that feature lines cannot cross contours that I have selected to create the surface?

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AutoCAD Civil 3D :: Grading Tools - Creating Proposed Grade Surface?

Feb 21, 2013

I'm trying to create a proposed grade surface using the grading tools. I drew the outline boundaryof the proposed surface as a closed polyline then created a feature line from it and assigned different elevations to it. When I try to select the feature line in order to create the grading, I get "THIS FEATURE OVERLAPS ITSELF AND CANNOT BE GRADED". What could be a possible reason for this?

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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 :: Revising Proposed Surface

Aug 27, 2013

I had a proposed surface in Civil3D2010 that was fine,  made revisions to the proposed contours using grips or deleting/adding contours. Now when I  try to add the new contour data to the surface either the program hangs up or I get contour error messages and the surface never gets re-built.

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AutoCAD Civil 3D :: Can't Get Proposed Roadway Surface To Show Contours

Apr 12, 2012

attached is Roadway.dwg file

I made "Road" surface from Corridor Properties / Surfaces... but when I go to surface properties for "Road"...the statistics tab is blank.

2013 Civil 3D

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AutoCAD Civil 3D :: Proposed Surface Not Linking To Correct Codes Of Assembly In Corridor

Nov 20, 2013

When I paste the proposed surface with the corriodor surface and I check the profile the proposed surface ties to the bottom of the kerb ignoring the footpath.Also in the same drawing file I can't seem to export it to ACAD.

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AutoCAD Civil 3D :: Structure Table That Lists Both Existing Surface Elevation And Proposed

Mar 5, 2012

So we have to adjust the elevation of hundreds of drainage structures from their existing elevation to the new finished ground elevation.I know we can give this information within the structure label by adding a reference surface but we would like to produce a table with three columns:

Structure No.      Existing Rim Elev.      Proposed Rim Elev.

How to produce such a table?

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AutoCAD Civil 3D :: Creating Conditional Subassembly - Proposed Cross Section

Oct 1, 2013

I am at a crossroads with this corridor that I have to create in Civil 3D 2011, with a sub assembly that logically seems very simple...the conditions for daylight can be found in "Proposed Cross Section".  In short I have 4 fill conditions and 2 cut conditions, based on height above original ground...(there are additional requirements for guardrails and retaining walls but at this point i will settle for my slope reaching original ground)

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AutoCad :: Change Google Map Elevations For Proposed Site Plan To Build Off

Feb 9, 2012

I have a finished 2D autocad drawing but I want to use the proposed elevations and change the ones in the google maps import.Does Civil 3D have it built in?

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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 :: 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 :: Proposed Profile And Existing Surface Not Showing In Profile

Jun 17, 2013

I have a profile showing proposed storm sewer, existing sanitary, rock surface, existing surface, and proposed profile. Today for some reason the proposed profile and labels, and the existing surface are not showing on the profile and I'm not sure what has changed or how to get them back.

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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 :: Create Proposed Profile From Surface Profile

Mar 17, 2011

We have an engineer who is taking an existing surface and wants to show a proposed road 2" higher than existing.

I told him to simply adjust his assembly for his corridor to account for the 2" difference, but the County agency needs to see a profile.

My questions:

1) Is there a way to easily copy a profile made from a surface and "convert" it to a proposed profile?  If we copy and explode, it turns into hundreds (thousands?) of tiny pline segments and it would be a mess to convert all those to a profile 1 by 1.  If we make the corridor, and choose "profile from corridor", we do not have an option that could be used to represent the centerline. 

2) Other than loss of dynamic updating), would it make sense to adjust the assembly so the top surface would be accurate, then copy the profile, explode the copy to a block and simply shift that (as essentially basic linework)?

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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 :: 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 :: 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 :: Surface Area Of The Bottom Of A Pond

May 31, 2012

I have a surface built for the bottom of a pond. The way to get the surface area  (not the volume) of the bottom of this pond?

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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 :: River Bottom Surface From 3DPolyline Sections

Sep 4, 2012

Is there an easy way to create a tin surface from 3d polylines that are generated by actual measurements of a river/ditch or imported from Hec-Ras (River Analysis -extension)?

The problem seems to be that the triangles should be long and narrow (like the ditch bottom in the example) instead of normal triangles the triangulation method normally generates. (The triangles in the example are generated by 3dwin -program).

When using Hec-Ras one way to go around this problem is to interpolate sections (XS:s) with very short distance. Hec-Ras does the interpolation very well, but I would like to have a better solution without tricks with other programs. Also in the long rivers the result is a very large file.

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AutoCAD Civil 3D :: Creating Subset Surface From Main Surface

Sep 15, 2013

I need to create a sub-set surface from my main surface. not sure what the vernacular is for a "subset surface" in c3d but i do have a feature line that bouinds the desired area, but that is as far as i can solve.

i did try creating a new surface - pasted the main surface in the edit definition, then deleted triangles until the boundary alighned wiht my featureline.  This seemed to work, but  when i view the properties of the smaller subset suface, it shows a mimum and maximum elevation that is incorrect.

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AutoCAD 2010 :: Create Proposed Surface Using Grading?

Feb 21, 2013

I am trying to create a proposed surface using grading. I created a closed polyline representing the site's outer boundary then created a feature line from it. When I try to select the feature line in order to create the grading I get "THIS FEATURE OVERLAPS ITSELF AND CANNOT BE GRADED".

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AutoCAD Civil 3D :: Creating A Top Surface?

Dec 11, 2013

If I change a point or link code in one of my subassemblies, is there a way I can build my top surface using those?

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AutoCAD Civil 3D :: Creating A TIN Surface

Aug 19, 2013

In the Surfaces Tutorials: Exercise 1: "Creating a TIN Surface". The first instruction is to click "NEW", which I did. I selected "Surfaces.dwt per instructions and clicked open. I have executed these steps a number of times to be sure I am doing what the instructions say. But, every time the same thing happens. "Drawing2.dwg" opens instead of "Surfaces.dwt". I also make sure the file type is set to dwt.

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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 :: Creating Surface From Corridor

Jul 11, 2013

I am trying to create a surface from a corridor.  I have a sub-assembly attached, which I believe is working correctly.  I managed to create the empty surface and when I try to add surface data nothing seems to happen.  I keep changing the specified code to Base which is my finished gravel structure and hit the + but again nothing seems to happen. 

Ultimately I am trying to determine a volume between my corridor and original topo.

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