AutoCAD Civil 3D :: Volumes Along An Alignment

Mar 13, 2013

I am trying to find an easy way of calculating the volumes I have been asked to do. I have a road, with an alignment created along the centreline. I have created a finished surface which incorporates the cutout for the boxing, and I have been supplied with a surface of the natural (original state) ground.

What I have been asked to do is calculate volumes at either 10m or 20m chainages (station).

Obviously, I can create a boundary, and then shift the boundary to where I want the volumes to be, but this road is 3km long, resulting in calculating 150-300 different volumes. The road is not a straight line either and includes a number of bends.

Is there a quick way of calculating this? Or do I need to use the boundary option?

The way they would normally calc it is to add all the details from the cross-sections into an excel sheet, and makesome complex formulas to figure it out. Even doing the boundary method is quicker than that.

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AutoCAD Civil 3D :: Composite Volumes

Jun 29, 2012

I have a question concernig a wrong result of computed volume.

EG surface with all EG points H=100.00m

FG surfase, created by FL-Square 100x100m H=101.00m, added to FG surface as breakline.

The Result-Fill=9149.59???

Why not 100x100x1=10 000???

P.S. EG points at above example were around 80, randomly spread at area say 150x150m

When I deleted 76 and moved remainig 4 at the corners of the square, the result is OK 10 000cu.m

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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 :: Corridor Volumes Into Sections?

Jun 7, 2012

I have sevreal corridors with various spurs.  The contractor wants the cut/fill volume in sections along the corridors, not one big cut/fill calc.  Is there a way to do this in C3D?  I have got the volume table with the chainages on, but he does not want a cumulitive figure for the whole corridor.

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AutoCAD Civil 3D :: Inaccurate Grading Volumes

Aug 29, 2012

I have noticed that the value I get when I use the surface volume comparison tool or look at a graded item in the grading group properties box is different than if I calculate it by hand and the discrepancy isn't even consistant.  After spotting this problem in a job I am working on graded two simple ponds to check this.  The first one is 100' x 100' and 5' deep w/ 2:1 side slopes.  Calculating the volume by hand I get 1500 cu. yds but the grading group properties come up to 1506.17 cu. yds.  The accuracy is off by less than 0.5%  The second pond is 100' x 100' and 2' deep with 3:1 side slopes.  The hand calc gets me 654.52 cu. yds. and the grading group properties reads 655 cu. yds.  This discrepancy is closer to 7%. I really need to know if I can trust the volume tools in the program. 

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AutoCAD Civil 3D :: Cutting Volumes Along A Set Line

May 1, 2013

I am attempting to take two surfaces and cut straight down through a set polyline and get the difference between two surfaces.  Do i want to use the bounded volumes to do this? Or can i simply create two surfaces and and use the analyze/volumes tool and just select the two.  I would then add the boundary to each surface to limit the data.

My concern is since the two surfaces do not meet along the edges which will cause the math to be off.

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AutoCAD Civil 3D :: Volumes Of A Stockpile By Elevation

Feb 23, 2012

I have a few vary large stockpile that i need to get volumes of the stockpile at 1 meter intervals- is there a quick way of doing this, other then finding the area of each elevation and calculating the volumes.

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AutoCAD Civil 3D :: Volumes / Grading And Surfaces

May 30, 2012

I have an existing topo surface created as well as grading for a proposed elevated pad of earth done in civil 3d 2013. I simply want to calculate the cut and fill quantities. I created the grading with automatic surface creation checked on. When I use volume tools to see what the quantities are, it says 0.0 for both cut and fill.

I created another surface (TIN) and pasted the existing topo surface and the proposed grading surface into it and I couldn't get any quantities.

I created another surface (TIN volume) and set the base surface as the existing surface and the comparison surface as the surface created from the grading but again could get no quantities.

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AutoCAD Civil 3D :: Determining Dam Permit Volumes?

Jun 1, 2012

I am looking to find out if the is a way of generating a stage storage table or volume table showing only the volume in the pond from the lowest intersecting existing ground contour to the top of the pond (to determine what would spill out of the pond in case of a berm failure) and if Civil 3D could make the determination of where that intersecting point is.

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AutoCAD Civil 3D :: Pond Volumes Calculation

Jul 24, 2013

I have a manure storage pond that I am trying to figure out the total storage volume for. It has 2.5:1 Side slopes and a 10 foot wide ramp at 10:1 entering the pond to the floor bottom. I am trying to figure out what the volume of this pond is. What is the fastest and most efficient way to get this volume? I do not want it compared to any other surface such as existing ground.

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AutoCAD Civil 3D :: Changing Alignment Direction Where Feature Line And Alignment Coincide?

May 28, 2012

i've made a serpantine curve that starts from one line of alignment and end on the other line.

i wanted to know how can c change alignment direction when these two feature line and alignment meet each other in order to change the alignment path?

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AutoCAD Civil 3D :: Data Reference Alignment Stationing Differs From Original Alignment

May 3, 2012

I using a data reference/shortcut to properly label an alignment in paperspace. However when I reference the alignment in and apply the labels the aren't the same as the original alignment that I am referencing. Is there a setting where I am supposed to apply a new beginning station.

Also it seems as though the stationing(distance) isn't even matching up 1:1 with the original drawing. For example in the original base drawing my alignment starts at 10+00 with the next PI at 14+76.98, but the stationing on the reference alignment starts at 0+83.33 with the very same PI being labeled as 1+23.08. So the very same distance is 476.98' in the real design and the drawing it's being referenced in, but the stationing of the referenced alignment shows it as 39.75 Units.

I've attached a screen of the beginning of the alignment.

Civil 3D 2012
Windows 7 Service Pack 1
Intel Core i7-2600 CPU
16GB RAM

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AutoCAD Civil 3D :: Change Alignment Label Style Set After Alignment Has Been Created?

Jul 18, 2013

Using Civil 3d2012, Is it possible to change the alignment label style set after the alignment has been created?  For example, for an alignment that was created with alignment label set X - change the label set to alignment label set Y?  It seems like this should be pretty easy, I must be missing something obvious. 

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AutoCAD Civil 3D :: Alignment Style Vs Alignment Labels - PI Treated Differently?

Apr 6, 2013

I have a question on Alignment PI's. (Point of Inflection/Intersection)I have an alignment where some PI's have curves, others are merely hard bends.

Is there a way to automatically label the PI's even if they have an associated curve? (I'd like PI, PC and PT)Alternatively, can I only show markers at PI's without curves?

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AutoCAD Civil 3D :: Alignment Entities Not Showing Up In Alignment Grid View

May 20, 2013

I'm trying to edit some existing alignments. When I create new entities, they do not show up in the alignment grid view. Why is this?

Windows 7 x 64 bit
NVidia Quadro 2000 Dual Monitor
6.00 GB RAM
Intel Xeon W3550 @ 3.07 GHz
Civil 3D 2013 SP 2, Civil 3D 2012 SP2, Civil 3D 2011 V3, Civil 3D 2010 V3

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AutoCAD Civil 3D :: Launching Alignment Grid View / Alignment Entities

Aug 11, 2013

Launching alignment grid view/alignment entities,

I’m wondering if there is a way to launch alignment grid view/alignment entities (attached) without the need to first launching “alignment”? This dialogue box is quite essential in editing the values of radius, degree of curvature and deflection angle for the selected curve.

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AutoCAD Civil 3D :: Alignment Begin Station Inherited From Another Alignment

Aug 8, 2012

Can I inherit the station from one alignment as the begin station for another alignment?

For example. Alignment 1 is 1000 ft long and starts at sta 0+00.

At sta 8+01, Alignment 2 begins and goes off in another direction.

I manually enter 8+01 for begin station Alignment 2. Life is good. Still in the design stage, and customer needs to modify Alignment 1 to avoid something. Now Alignment 2 intersects Alignment 1 at sta 8+15, but same N/E coordinates.

I manually enter 8+15 for begin station Alignment 2.

It would be better if Alignment 2 could inherit the begin station based on the new stationing from Alignment 1.

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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 :: 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 areas....one 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 :: Surface Volumes In Specific Areas

Apr 16, 2013

I have a 100 acre park that I am doing earthworks.  I have 1 proposed and 1 existing surface.  The park is now broke into 5 different areas and I need to get cut and fill for each area.  Is there a way to do a volume report for a particular area?  I could define the area with a polyline.  Or do I need to copy the proposed surface and start chopping up into 5 areas?

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AutoCAD Civil 3D :: Volumes From Surface Legend Table

Aug 21, 2012

I have created a volume surface and associated surface legend table using the cut/fill parameter.

The volumes and areas don't seem to add up, take Cut 2 as an example only if the area of the previous (cut 1) was added could this be possible. There is lots of speculation in our office like does the fill work in reverse?

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AutoCAD Civil 3D :: Calculating Existing Berm Volumes?

Aug 12, 2013

I am looking to calculate the volume of an existing berm from a TIN surface.  I have read through some of the Civil 3D tutorials, and realize that I will need to have two surfaces (base and comparison), but need to figure out how to create the comparison surface. 

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AutoCAD Civil 3D :: Calculating Volumes With Out Of Date Surfaces

May 9, 2013

I have been provided a file with a surface, however I have not been provided with the point files referenced to define the surface.  As a result, when I try to calculate the quantities in the volume dashboard using a volume surface, I get the error that the surface is out of date.  Is there a way to calculate volumes with an out of date surface?

I am trying to calculate the amount of material required to be cut when creating a flat bottom ditch.

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AutoCAD Civil 3D :: Volumes Dashboard Sort Columns Alphabetically?

Mar 19, 2012

Is there a way I can sort the columns in the dashboard alphabetically?  Normally you just click the title in these windows to toggle the way it sorts it, but you cannot do that with this tool.  Its making my cut/fill report look messy, as the surface volumes are not in any order.

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AutoCAD Civil 3D :: Widen Roadway Through Some Mountains - Corridor Volumes

Jun 26, 2013

I'm working on a project to widen a roadway through some mountains. The problem i am having is getting the corridor to apply to a future surface so that i can determine the volume difference. my profiles show there should be some cut and fill, but i cannot get the model to reflect this. when i try to preform a bounded volume i recieve a "the surfaces do not overlap".

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AutoCAD Civil 3D :: Get Cut Volumes For Areas Greater Than 15ft Of Cut For Project

Mar 14, 2013

I am trying to get the cut volumes for areas that are greater than 15ft of cut for my project. We know that we will be able to get the top 15 feet with heavy equipment but will be drilling and blasting anything greater than 15 feet of cut. This is a different pay item, with greater cost so we need to quantify it.

I've got a composite surface that graphically shows me the elevation bands so I can see the areas that are greater than 15 feet but I'm not sure how to quantify the volumes.

Currently using C3D 2012 with the volume dashboard extension. Have 2013 installed just haven't jumped over yet.

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AutoCAD Civil 3D :: Program Acts Funny When Close Volumes Dashboard

Oct 9, 2013

Whenever I open the Volumes Dashboard in a drawing and then close it, my cursor and my WCS compass start blinking erratically, and the program seems more apt to freeze up when I try to do other things from that point on, especially if I try to move to a drawing in another tab. If I bring back the volumes dashboard, it's fine again, but then I've got the annoying outlining of my volume surfaces that I don't want. how to handle this? Is it just an unavoidable glitch in the program?

(I'm using AutoCAD Civil 3D 2014.)

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AutoCAD Civil 3D :: Profile View Of Alignment In Civil D & Google Earth Varies

Dec 25, 2012

I imported Google earth surface (at eye alt 600m) to civil 3d 2012 and created an alignment of length 181m.

When I exported same alignment to Google earth , it showed the length as 190m ( the difference increases with increase in length of alignment) And also the profile view of the alignment in the Civil D & Google earth varies.

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AutoCAD Civil 3D :: Get An Alignment By Name

Mar 20, 2012

I am looping through the civilapplication.activedocument's alignmentIDs collection and looking to see if the name of the alignment is the one I want.

Is there a more direct way, where I could use the name like

doc.GetAlignmentId("somename")?

maybe GetAlignmentIds() is only way to access the align collection though,

[URL]........

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AutoCAD Civil 3D :: How To Delete Alignment Using API

Apr 16, 2012

I thought that finding the alignmentId, and using the

doc.GetAlignmentIds().Remove(delId);

would do it.

I know i have the right alignmentId, it all cheaks out, there must be something I have to do after removing from the ID collection.

I am doing a Tr.Commit(); but that does not seem to be good enough.

full code is: (_returnMsg is a local var for the class containing this method)

public void DelC3DHAlign(string name) { _returnMsg = "Error, No alignments available";
//access Civil 3D
CivilDocument doc = CivilApplication.ActiveDocument;
try { using (Transaction tr = HostApplicationServices.WorkingDatabase.TransactionManager.StartTransaction

[Code]....

[URL]....

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AutoCAD Civil 3D :: Value Of Railway Alignment

May 5, 2013

How is possible to get Cant values of Rail type alignment in C# or VB?

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