AutoCAD Civil 3D :: Surface Profile - Use Interpolation To Get Elevation Of Unknown Points?

Jun 16, 2012

When creating surface profile Is civil 3D use interpolation to get elevation of unknown (points which not having elevation data) points?

Or just join  elevations which have elevation data(input data)?

AutoCAD Civil 3D 2012 SP 2

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AutoCAD Civil 3D :: Band Style To Display Surface Elevation - Horizontal PVI Points

Oct 8, 2013

C3D 2012 SP3 on Win 7 Pro:

I have an alignment with horizontal PVI points that are coincidental with COGO points.  I want to display in a profile view, a surface elevation at the alignment PVI points in a band style.  Is it possible to do this? If so, how?

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AutoCAD Civil 3D :: Change Reference Surface For Surface Elevation Label

Apr 4, 2012

Is there any way to change the referenced surface on a Surface Elevation Label. I can see the surface in the properties but cannot change it.

C3D 2011

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AutoCAD Civil 3D :: Showing Profile Elevation Differences Right Above Profile 2

Jul 17, 2012

differences in elevations of points along Profile 2 (the proposed new road elevation) and Profile 1 (the existing elevation/surface) should be computed and shown right above the Profile 2 line. For example, if at a certain point PT 1 the elevation of the proposed road is 132.44 meters and the elevation of the existing surface is 132.45 meters, the difference is -0.01 meters and it should be shown exactly above the Profile 2 line (or a little bit above it) but not on it. The same should be done for every chosen point along the proposed profile.

So far, I have done this manually, by dragging the difference (already automatically computed and shown in one of the bands below the profiles) to the correct place for every single point. However, I don't know how to do this automatically.

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AutoCAD Visual LISP / AutoLISP :: Connect Two Points With Given Elevation Following Surface File / Entities

Dec 4, 2013

I am working on a flood inundation, I would like to find a lisp or command(i'm not finding) to connect two points with a given elevation following the surface file or surface entities. 

here is a small section as example right now it's just guesswork, some of these have taken a week to connect all the sections.

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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 :: Profile Geometry Points Of Superimposed Profile To Alignment Label

Mar 1, 2013

I have an alignment label that I normally use to show the PVI's of a profile in the plan view.

This is a little unusual, but in a specific case I wanted to design my profile at one alignment, but show it at another.  I designed my swale profile in the pathway profile view and then superimposed the swale profile on the swale profile view.  I then went back to the swale alignment to add these labels.

It's a no-go AFAICT.  The only profile available for me to select for these labels is the original ground profile from the surface.

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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 :: 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 :: 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 :: Surface Profile Not Shown In Profile View

Nov 28, 2012

Attached are survey points that created the surface of a road embankment portion that caved-in. The road is very near a reservoir  shoreline. 

1. How can a surface profile be produce? I/'ve use line to change it into an alignement and then create a proile , then a profile view. But the the surface profile is missing. 

2.the points having higher elevation are the  top edge( road level) of the cave-n . A few few shots were take before the shorline elevations.

3. What the best way to come up with the rock volume to fill the cave-in given this surveying points., Also the shoreline elevation will be lowered some more while work is being done since the fill is not allowed to fall in the reservoir. 

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AutoCAD Civil 3D :: Difference Elevation Between Two Points

Mar 21, 2013

Any way to get an expression that calculated the difference between two points and pick up the results as point elevation.

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AutoCAD Civil 3D :: Creating Points According To Elevation

Jan 3, 2013

I have a number of 3D polylines that where exported from SDF previously created. They have numerous vertices, each one with a given elevation.

How can I create/highlight the higher and/or lower point in each 3D polyline??

A different solution would be automatically breaking these polylines in slope changing points (i.e. high or low points).

I understand that i can create points according to slope or elevation, but it has to be done manually, each poly at a time, and by tipping numeric values that i am sure that a powerfull software (as Civil 3D is) is able to calculate using the drawing information.

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AutoCAD Civil 3D :: TIN Surface At Zero Elevation

May 22, 2013

I used the Volume dashboard to cal volume so when I view the surface in object viewer or 3D I see my TIN volumes surface at zero elevation is this right? I think the reason is because they want us to see both surface so they are not on top of one to another.

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AutoCAD Civil 3D :: Exporting Points To Shapefile With Z Elevation?

Apr 12, 2013

Using Civil 3D 2013. I've exported my Civil 3D points to an SDF and then to a shapefile. I cant get the "Z" elevation to come with it. Northing and Easting is correct, only problem is that is holds a zero elevation. how I can get the elevations to show correctl in the shapefile?

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AutoCAD Civil 3D :: Adding Profile Elevation

Jan 21, 2013

I have a surface profile 1 and a corresponding water level profile 1 of a flood plain. Now I get an updated surface profile 2 and the engineer ask me to ajust the water level according to the difference of surface level 1 and 2. 

How can I add a irregular distance (water depth)  to surface profile 1?

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AutoCAD Civil 3D :: Zero Elevation For Volume Surface?

Sep 27, 2013

I'm getting a zero elevation for the surface I create when I compare surfaces to get volumes. What am I missing?

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AutoCAD Civil 3D :: Surface Elevation Labels

Jun 26, 2013

I have a drawing that someone else created that has a spot elevation label for a surface. It labels the surface (PAD) then automatically subtracts a set distance for another elevation (GFE) and adds a set distance for another elevation (FFE). After doing some research, it looks like it was created with an expression?

I have two questions:

First, where to go to get a better understadning of this? I'm not familiar with expressions.

Second, where can I find the expression in drawing to make an edit to the set distances. I can remove the GFE/FFE as they are separate components in the label style, but I don't see where to modify the distance it adds or subtracts.

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AutoCAD Civil 3D :: No Elevation When Hovering Over Surface?

Apr 25, 2013

I have created a surface, when I hover over a contour on it I used to get name,style, layer, elevation.  Now I get them all except elevation, I didn't change anything (not on purpose at least) in my drawings.

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AutoCAD Civil 3D :: Surface Analysis By Elevation?

Feb 8, 2006

I've tried to create a surface analysis by using a point group reading xdata to set the elevations and when I set my surface properties to display the elevation shades it will only allow me to set the range to 5 or less. All of the other analysis settings for direction, slope, and slope arrows allow me to input the nuber of ranges I want, but I need the elevation analysis.

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AutoCAD Civil 3D :: Surface Transparency (elevation)

Apr 17, 2012

In the previous C3D 2012 version I was able to set surface transparency just setting it on a layer with defined transparency. Example: I set my "existing ground" surface to a created  "EG" layer (example name) and set transparency layer to 50% (example, again) and it WORKS! My surface become transparent...

But now, in the C3D 2013, I can't get the same results... my surface is not getting transparent. I already tried to turn off/on hardware acceleration and adaptive degradation and show/hide transparency.

More details: I can get transparency on points, triangles, contours etc... but not on elevation, and this is my priority.

Autocad Civil 3D 2013 - Infrastructure Design Suite
Windows 7 64 i7 860 @2.80GHz 8GB Ram Quadro 2000D

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AutoCAD Civil 3D :: Surface Elevation Labels

May 3, 2012

We work with Hydro graphic surveys that have large numbers of points. We would like to be able to display girded spot heights colored to represent the elevation. (Similar to elevation banding)

I have created a surface and then created surface elevation points on a grid with spacing of 15m. I have tried looking at setting up a style  that will adjust the color depending on the elevation ie 0 to -1 = red but haven't made any progress.

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AutoCAD Civil 3D :: Manhole Rim Elevation From Surface

Aug 16, 2013

I have a question about pipeline networks.

I have a civil3d pipe network that has modeled by my co-worker before.

Now I want to put that pipe network on new surface and get rim elevation from surface automatically and also after stretch it can update rim elv based on that surface.

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AutoCAD Civil 3D :: COGO Points Not Displaying Elevation Properly

Jul 1, 2013

I have a rather odd situation.  I have input a small table of survey points (we don't have access to a data collector, so it had to be manual).

I have a properly located and back-sited setup, with all of the points located in 3 dimensions.

The Northing/Easting/Elevation data is calculated and displayed for all of the points in the "observations" table accurately.

Every point has the same display/labeling properties/settings, but only 2 points properly display the elevation as calculated.

The problem seems to be that the points aren't accurately retrieving the Elevation from the table.

For some reason, in the “Properties” dialogue for the points that display properly, the “Point Elevation” field actually contains a number; whereas the points that don’t, the same field reads “*PROPERTY NOT SET*”.

This makes no sense, because in the table that defines the points, the elevation is accurate for all of the points, and I can’t find a difference in the table- or in the point properties- between the correctly displayed points, and the ones that are missing the elevation label.

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AutoCAD Civil 3D :: Moving Points With Nod Grip Without Elevation Changing

Nov 13, 2013

I recently upgraded from Civil 3D 2009 to Civil 3D 2014.  In Civil 3D 2009 I was able to set the point style 3D modeling to flatten the point to a 0.00 elevation. In doing this I could move the point around freely using the nod grip without the elevation changing weather I used object snap or just freehand placed the point.

For some reason with 2014 when I grab the nod grip it changes the elevation to 0.00 as soon as I move it from the location it currently sits despite the fact that everything is set the same as it was setup for 2009.  Is there a setting that I need to change to fix this or is there a new way to go about moving the point without using a bunch of different commands.

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AutoCAD Civil 3D :: Profile Band Elevation Precision?

Jun 20, 2008

In the profile band the elevations are set to 3 decimal places. I just want to get it to 2 places.

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AutoCAD Civil 3D :: Profile Elevation In Alignment Label

Sep 25, 2012

I need to know how to display a proposed profile elevation in the major station alignment label, I mean, for example, I want to read in the label "0+000, 494.444". I've already edited my major station label style adding a (profile type) Reference text, and it only displays "?". I suppose I need to associate it with the correct profile, but I've not figured out how to. I show you how the label looks in the attached image.

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AutoCAD Civil 3D :: Getting Station And Elevation From Profile View

Oct 31, 2012

I am using LISP in C3D 2012.  I am trying to get the station and elevation of a point I pick in a profile view.  I found the Method that will get that info, but I can';t seem to get the syntax right.This is the Method;

HRESULT FindStationAndElevationAtXY(
    [in] double X,
    [in] double Y,
    [out] double * pStation,
    [out] double * pElevation,
    [out, optional] VARIANT * pInBounds

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AutoCAD Civil 3D :: Elevation Of Pipe Outside Top On Profile View

May 19, 2013

Need getting pipe top elevation in profile view data band? In labels it's possible to perform calculations via expressions. In data bands – not. Inablity to get pipe outside top elevation in profile view leads to dead end in my hunt for smooth workflow.

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AutoCAD Civil 3D :: Block Attributes Surface Elevation

Feb 18, 2013

I got this plan from a third person and, the point from the survey have the property " bloc ". In their attribute property, I can see the elevation value. but in the z of the actual bloc, it shows zero. I would like to tell C3D to use the attribute elevation for his actual Z in the drawing. How can I achieve this ?

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AutoCAD Civil 3D :: Export Surface Elevation Values

Nov 15, 2013

is it possible to export elevations from a surface at a given interval?  i can easily export all the data i used to build the surface, but now I am wondering if its possible to export/extract the surface to a CSV or TXT file with a position and elevations, say, every 5 feet?

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