AutoCAD Civil 3D :: Force Grading Object To Polyline Boundary?

Mar 4, 2013

I am working on a complex industrial site.  And I would like a constant grade of 3.00% from my road intersections to the edge of curves.  I know if I used a corridor, I'd be able to tell the grading to project ot the edge of the road/curve. 

I'm just wondering if I can tell a grading object to project to a polyline or feature line along a intersection curve?  There are many reasons as to why I'm not using corridors for this project, but I don't want to get into that.

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AutoCAD Civil 3D :: Extract Boundary Of Grading Object?

Mar 7, 2012

I like the 'Extract" feature for surfaces, where I get get the contours or boundary of a surface in PL form without having to explode the surface. I have not figured out how I can do that same thing for grading objects. So far I have been exploding grading objects and then remaking them. Seems cumbersome.

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AutoCAD Civil 3D :: Convert Polyline To Feature Line For Use In Grading

Aug 22, 2012

I'm working on crane pads for a windfarm development and have run into an issue that has never happened in the other 60 or so ones I've done previously.

I have a polyline (elevation added in via Properties) that I want to convert to a feature line for use in grading but when I try to convert I get the message below

When I check the properties and do a LIST the list reports a negative elevation.

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AutoCAD Civil 3D :: Convert Surface Boundary To Polyline

Feb 1, 2013

I need to convert my surface boundary to a polyline so I can use it to clip another surface. Is there a simpler way than tracing it with the polyline command?

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AutoCAD Civil 3D :: Illegal (self-intersecting Or Non-closed) Boundary Polyline

May 1, 2012

I always get the message after I make a closed boundary polygon, and I know it's a closed boundary, but I know how to fix it.  It just bugs me sometimes when the message pops up when I add it as a boundary under the definition of a surface.

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AutoCAD Civil 3D :: Complex Object Grading

May 21, 2012

I am tring to grade a complex object. Please see the attached document. The two grading objects are not interfacing correctly when graded although i can get the surface almost correct i beleive. Is there a way to remove this issue or the grading will not create a lot of difference when computing the volume clacs ( we are talking volum computation roughly about a million cubic metres cutting).

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AutoCAD Civil 3D :: Grading Object Projection

Jun 18, 2012

I am having difficulty projecting an existing feature line at a specified tie-in slope.  I have a steep (3:1) feature line that I need to project at a specific slope (2.5:1)to intersect a surface model.  When I create the grading object the generated grading object is not 3:1 along the feature line and 2.5:1 perpendicular to the feature line.  Instead I am left with a new slope that is 1.9:1 between the generated contours.  I have attempted slope to surface as well as slope for a distance.My design criteria is to not exceed a 2.5:1 tie-in slope.

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AutoCAD Civil 3D :: Grading Object Stability?

Mar 20, 2012

Has the grading objects become anymore stable than they are in '09? Unfortunately, our company hasn't been able to upgrade to a newer version and we are beginning to get to the point where 'hand grading' everything is taking too long. I am proficient in using the grading tools, but everytime I do, my drawing becomes corrupt. I want to push us to the newer versions if at all possible.

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AutoCAD Civil 3D :: Grading Object Infill

Oct 9, 2013

I am creating a simple, and although it's large (100 million gallons), the grading object routine is relatively simple.  I have the inside crest of the berm and I'm grading down 40-50 feet.  Everything is fine until I infill the bottom of the basin and then the infill line around the perimeter of the bottom has two points that are way below the actual bottom, like another 100+ feet.  The two points are on opposite sides of the basin so obviously it throws off the whole resulting surface and causes earthwork calculations to be invalid.  

I've tried various sizes and shapes, having the crest feature line both "open" (with a tiny gap) and "closed", straight and arc shapes for the crest, grading to elevation and to relative elevation, and probably more.  This problem seems to appear in each scenario.

Version: Civil 3D 2012 on a Dell PC

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AutoCAD Civil 3D :: Grading Object / Daylight Lines

Sep 19, 2013

Where are the setting for the display for grading lines such as features, daylight lines, etc in the standard grading pallet?

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AutoCAD Civil 3D :: Section View For Pond Grading Object

Jun 9, 2013

I created a Pond Grading object with the associated surface. How can I cut and plot Section Views of the Pond Grading object just as I could do(using "Create Multiple Section Vtews" command) with Corridor object of a Linear project?

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AutoCAD Civil 3D :: Infill Grading VS Feature Line Grading

Dec 24, 2013

"An infill grading has no criteria applied to it. Any area bounded by feature lines or lot lines that is not already a grading can be converted to an infill grading."

So given an area enclosed by a feature line, an infill grading can be created. Using the same features line, an feature line grading can also be created. what is the difference between these two surfaces? They both have no criteria applied to them.

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AutoCAD Civil 3D :: Query Point Cloud Boundary Then Add All Points Within Boundary

Nov 9, 2012

i need to know if there is any way to control the points in the point cloud.

1. either only import the point cloud in a polyline area i specify

2. add all the points within a boundary not limited to the pointclouddensity = 100, freaking default is 15 almost cost my job today. extremely stressed out right now.

i am talking about extreme lidar surveys. 1km 1km LAS/0.5m contours/xyz files times 355 of them. covers a 2km wide corridor. but i only need 100m wide after i define the road alignment. no need to have all the extra points.

right now i densify the heck out of it and end up like 5-12m points. decent but not good enough because the geotech is bitching about that accuracy is not good for some feasibility study. or is there any software i can do this besides civil 3d.

what i want can also do is automate the 'add points to surface" under point cloud and have the software do multiple boundaries without having me baby it over the night. right now every click is 5 minutes and adds like 400k to 1 million points. Civil 3D 2012

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AutoCAD Civil 3D :: How To Convert Polyline Object (with X / Y / Z) To TIN SURFACE

Sep 2, 2012


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AutoCAD Civil 3D :: Convert SurveyFigure To Polyline Object

Nov 11, 2013


That code is also useful for feature lines or parcels?

Can I get polyline Id after we can create automatically?

I want calculate all location crossing between feature lines.

Currently, I know to do that for crossing polylines.

Autocad Civil 3D 2014 +SP1
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AutoCAD 2013 :: Offset Boundary Around A Polyline

Dec 19, 2012

What is the command to offset a polyline in all dimension as shown in the attached?

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AutoCad :: Hatch Inner Boundary Of Closed Polyline?

Jul 6, 2012

I am trying to find a command that will hatch the inner edge of a complex closed poly line, rather than hatch the entire area inside the poly line.

When I have simple shapes such as a rectangle I create a smaller rectangle inside the first that is 1' (or whatever I want my hatched area to be) smaller on all sides than the first rectangle. I hatch by selecting the two rectangles; I change the "Associative" hatch property to "No" and then delete the inner rectangle.

My problem now is that I have a complex closed poly line that I would like to hatch the inner perimeter with a set thickness, say 1 foot. Is there an easy way to hatch a inner boundary of a closed poly line or to recreate a scaled down copy of the poly line that is a set distance smaller all around. I hope I have conveyed the question clearly enough.

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AutoCAD Civil 3D :: Defining Object Data To Polyline And Polygon

Nov 24, 2013

Is there a way to define object data to a polygon or a poly line in C3d? I imported a shape file and saw that in the properties dialog box the object data of the polygons is displayed. I would like to define create new polygons and define certain atrributes to it before exporting it as a shape file. This would would eliminate the need to use a GIS program to define the attributes of the polygons. 

Im using PCSWMM and would like to define certain atributes to polygons and polylines in C3D before i import it in to PCSWMM.

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AutoCAD .NET :: Getting Polyline Data Into A Custom Derived Object (from Polyline)

Nov 11, 2013

I've been working on a custom polyline object, and I've got it functioning!!Having said that, I plan to run its creation around picking a point for bounary selection.

(Other than trying to step through every vertecies) is there a technique I can thow the polyline data from a traceboundary result into my custom object? I've been trying to add the polyline from traceboundary to my object BEFORE it's added to the transaction by the way...I assume that's right, since I want to put it's data in my custom object then add my custom object to the transaction instead.

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AutoCAD Civil 3D :: Surface Boundary Only Showing Portion Of Surface Within The Boundary

Oct 24, 2012

I used a 2d polyline to create a surface boundary for a surface created.  The polyline is a closed loop.  For the boundary type it is outer, unchecked Non-destructive breakline, and mid-ordinate distance = 1.

My problem is that when I do this I only get a small portion of the surface to show up within my surface boundary.  If I don't have a surface boundary the entire drawing surface shows up no problem.

The purple polyline is my boundary and the light blue is the surface created within the boundary.

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AutoCAD Civil 3D :: Convert Metric 3D Polyline To 2D Polyline

Jun 29, 2013

I want to convert a 3D polyline to 2D polyline.

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AutoCad :: Make Polyline Object Instead Of Line Object?

Oct 15, 2011

I want to Make Polyline object instead of Line object. How to change the object?

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AutoCAD Civil 3D :: Align Polyline Onto Another Polyline

Mar 22, 2012

Any way I can align a new polyline to a reference polyline (orig polyline).

The 2 polys will be generally the same length, however, the number of vertices will differ.

Also I need to mantain the same distance between the vertices on the new poly and the new and reference poly won't follow the same direction.

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AutoCAD Civil 3D :: Force Refresh Is Not Working?

Dec 10, 2011

I am trying  to make a simple app using .NET classes.

I made a simple Windows.Form in which are check boxes (on for each layer of the CAD drawing).

Just to set the visibility of each layer. Everything is working fine, but I have a little problem with refreshing a drawing.

Changes of visibility settings are applied  after a form is closed.

I need the drawing to be refreshed after every check box check change.

 I enclose a method with handles check boxes changes. 

private void LayerCheckedChanged(object sender, EventArgs e)
CheckBox s = sender as CheckBox;


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AutoCAD Civil 3D :: Use Pressure Pipes For Force Main

Aug 27, 2013

I am wanting to use pressure pipes for force main. If you do how do you add an air release manhole?  I tried to use an appurtenance part as an air release manhole. If I set the plan display to use a block it skews the block. For the appurtenance part I do not see that the pipe inverts are available for the pipe label. I thought pressure pipes would be for water mains and force mains. So, I am wondering what others do for Force main Pipes?

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AutoCAD Civil 3D :: How To Raise Grading

May 9, 2012

Is there an easy way to raise an entire site by 1.0 foot and have the grading hit the previous targeted surface?  The only way I have found is to grab all the feature lines and raise them up by the required amount, but by doing that, the grading bogs down my system and it crashes, plus, I have grading attached to 3dpoly's and not necessarily all feature lines.

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AutoCAD Civil 3D :: Grading Toe Disappearing?

Apr 25, 2013

I am drawing a pond levy.  I draw the outline of the top of the fill, set that at the elevation I want, then grade it down to the existing surface on a 6:1.  The grading works perfectly.  The outline of the fill's footprint shows up just fine around the back of the fill, but the toe line doesn't show up all along the front side of the fill, but I still get the slope lines projecting down in the front. 

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AutoCAD Civil 3D :: Use Grading For Channel?

Mar 6, 2012

I want to cut a channel through a existing surface; bottom width: 5 feet; at elevation 1950 and side slope 1:1 (45deg) up to existing ground.

What I am doing right now is create a feature lines 5 feet wide, at el 1950 and use grading tool to project it to existing ground with side slope at 1:1. What i am doing is correct?

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AutoCAD Civil 3D :: Grading Subdivisions

Oct 16, 2013

I am working with Civil 3D 2014, I played with 2009 back in 2008 and before that it was Land desktop.  I don't know if I am not following a standard workflow.

Build the EG from contours.Layout the CL for the ROW and convert to a horizontal alignments.Create the profiles.Design the vertical alignment in the profile.Create the assemblies for the different types of road sections.Full profile, pavement width assembly, the curb return assembly, the daylight left / right, 1/2 side left / right, and pavement width left / right.Build the corridor, set the target surface as EG or FG, depending on where the section of the corridor is located. (At the edge of the property to EG, then after the first building pad to FG)This is where I have a thought something is wrong. If I am grading the entire site, why would I have the ROW grade to the EG, when I will need the surface to grade from the ROW to the closest building pads?Create the intersections, using the different types of assemblies, per the ROW sections.Create feature lines and use elevation editor to set all the elevations around the pad.Using the Grading creation tool, grade to surface, using a 2:1 side slope. Then adding an infill to the pad.

 I keep having the file crash after grading about 10 lots. I recover and it works find, but then the file runs very slow, and will crash. I haven't taken any classes in Civil 3d, and am looking for one in my area.

I am use to creating the vertical surface then creating points along the CL, TBC, FL, BOW then creating break lines along the points. Then create a break line for the pads, and build the FG contours from these break lines.

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AutoCAD Civil 3D :: Grading From The Side

Aug 8, 2012

Say I have a grading that runs north south and goes down 2%, up 2% and so on waffling along. Is it a poor practice to trace the side edge of the grading (in the same site) to add another grading to pitch east west?

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AutoCAD Civil 3D :: Grading Transition

Mar 4, 2013

I have a building pad where I created a grading of 5:1 to existing grade.  I want to change one side to 20:1.  How do I go about transitioning the 5:1 to the 20:1.  I create the 20:1 and the contours just dead end into the 5:1 grading area

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