AutoCAD Civil 3D :: Delete Triangles Versus Adding Outer Boundary To Eliminate Them
Oct 1, 2013
When cleaning up a surface, I've always created an Outer Boundary to define the surface limits so that the triangles wouldn't go where I didn't want them.
I'm trying prepping in hopes of sitting for my Autodesk Civil 3d Certification exam at AU. The chapter I'm currently reading through talks about deleting triangles from the surface.
So now I'm wondering about the pros and cons of both methods.
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May 21, 2013
I use Civil 3D 2011. I have created a surface from a point group. Now i want to extend the surface to an outer boundary. To do so, i do the following steps:
- Select the surface and Extract the border object.
- Create feature line from the extracted border polyline
- offset this feature line (featureoffset) to outside specifying a offset distance and specifying the elevation difference as 0.
- Add this offseted new featureline as the boundary in the definition of the surface
- Rebuild the surface
Now when i am selecting the surface, I see that the featureline is not a part of the surface and I do not find the contours and the TIN extending to this new boundary. Also I still find the old border in the surface.
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Sep 17, 2013
I have a known outer boundary for my depo for excess soil. I know how much (volume wise) is going in to the depo. I know that the slope is 1:2.
I do not know where the upper boundary (top of the depo) of the depo is. That's what I would like to find out.
I know that I can create a upper boundary with a feature line and then use the grading and volume tool in order to find out at what height the upper boundary is placed. But then the outer boundary is either too small or exceeds the known boundary.
What is the easiest way of finding out where the upper boundary is? I am thinking about drawing a feature line around the known boundary on top of the EG surface and then using stepped offset. Then I can check out the volume.
But is it possible to do this automatically instead of manually?
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Mar 13, 2013
I try freezing my proposed storm structures inside Viewport for Existing Conditions sheet. My proposed DI's freeze because they use a block (in structure style). My proposed headwalls use the outer part boundary from catalog. BUT both DI and Headwall Style Component Layers are set to C-STRM-STRC.
In the pic for Existing Conditions Layout, you see a white headwall boundary. In proposed layout, you see a magenta headwall boundary. It's using the Object Layer and not the component layers for the headwall.
I didn't see another way to logically set up Object Layers for Pipes and Structures that contain Existing and Proposed Water, Storm, and Sanitary. My Object Layers have Pipes set to C-UTIL-PIPE and Structures set to C-UTIL-STRC, BUT the Component Layers inside the style are specific. Example: Existing Storm Structures and Pipes have layers such as V-STRM-PIPE and V-STRM-STRC. Proposed Storm would have Component Layers such as C-STRM-PIPE and C-STRM-STRC. The Object Layer for both existing and proposed use C-UTIL-PIPE and C-UTIL-STRC.
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Nov 14, 2013
How I subivide and get the interior lot lines dito not show over the outter lot? I don't do a lot of parcel work just trying to make it easy for the others
Civil 3D 2012 & 2013
HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram
64 Bit Win7 OS
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Feb 17, 2012
I am trying to do labels that depict my logo. When I put the logo in the corner, the outer boundry overlaps even though the logo is within the label.
Print preview message says one or more components tresspass printable area. I have only entered the logo. The background on the logo has been removed.
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Dec 18, 2011
Let's say I have a letter 'B' and I want to create an outline on the outer boundary only and not the inner boundary i.e. the two small 'D', how can I achieve that?
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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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Aug 25, 2009
I have several days of experience with Autocad 2010... The problem: I have many (a lot) polylines in my 2D drawing that are adjacent to each other, but not joined. What is a good way of joining them, so that those that "touch" each other become one? Maybe I can hatch the area, then delete polylines and then reconstruct the boundary?
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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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Apr 17, 2012
Putting in a simple berm crest, and the triangles skip right over a certain section. Swap edge does nothing and adding points seems to make things worse. I have been able to fix this problem before, but only by deleting my surface and then putting all the pieces back in at once. Then it's perfect.
I think part of the problem may be that the "Contour help" I put in at the blue major contours is screwing things up.I have had the same issue when putting in down-slope channels as well.
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Aug 15, 2012
Whenever I try to use the "DWG to PDF.pc3" driver, I'm getting TIN triangles in my PDF. They don't show up in the "Print Preview", just in the resulting PDF. They also don't show up if I print directly to a printer. Only in the PDF. Never saw this before installing SP2.1.
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Nov 14, 2011
I am running 2011 c3d on windows 7 with 15 GB of ram.
An error message I get is "reading triangles from file" and the program locks up to where you need to do a reset on the computer. I have an existing ground surface that is data shortcut into the file I am opening when I get this error. The existing ground surface is about 5 mg in size. I'm not sure if this is causing the error.
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Jan 6, 2014
i am trying to add as a breakline. i have not been able to get this particular line to work as a breakline and the surface keeps drawing triangles through the line like its not even there. The figure properties show that it is a breakline. The figure prefix database brings the line style in as a breakline from the start.
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Dec 5, 2013
Since Action recorder does not work with the surface style display box, is there any way
to automate the toggle of points and triangles display ?
I dont see any command lines that can change the light bulb status?
using c3d 2012
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Mar 7, 2013
Today I opened a file that has previously worked perfectly well, only to find that when I open my surface in Object Viewer and begin to rotate it manually, the triangles making up the surface do not appear. I have the contour lines and border (what is enabled in the Edit Surface Style/Display/Model tab) although the triangles (which should be displayed as well) do not appear. Other surfaces show like they should.
Is there another option other than the Edit Surface Style/Display/Model tab and the VISUALSTYLES command?
using Civil 3D 2013.
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Mar 25, 2013
I added three feature lines to my surface as breaklines. But the triangles still cross them. Triangles shouldn't be crossing breaklines.
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Mar 11, 2013
with the Genio Exporter. I need to export the surface triangles from my job, but the Genio export dialouge box only gives me the option to export suface boundaries.
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May 8, 2013
I used the function paste to combine three surfaces in one. It could represent a highway. I noticed that when surfaces cross or pass close to each other some extra triangles show up trying to stitch together the surfaces. I can not find an option that can stop this, eg "not create extra triangles". Why these extra triangles occur? Can you limit it?
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Jun 11, 2012
I had a request come in this morning to generate a spread sheet with all PI's along a route with angles greater than 20°s. Using Civil 3d 2011 I thought the PI station report or any of the reports for that matter would tell me the turned/deflection angle for each PI. However, I have discovered I can get coordinates, bearings etc. but no angles. How to spit out a PI report showing the turned angle for each PI?
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Feb 26, 2012
What I would like to achieve is a section band style for bulk earthworks and simple access roads that shows the design level at Grade Breaks only. The problem I am having is that Grade Breaks are being recognised as where the sample line crosses a triangle, not where the the grade actually changes/crosses a feature line.
A have a number of simple platforms, that I have created using an infill from feature lines, usually these platforms are surrounded entirely by feature lines of the same height. As to be expected, Civil 3d creates a few flat triangles, and as a consequence, all of the points where the sample line crosses these show up on my band style. Is there any way to achieve this band style?
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Jun 14, 2012
I have a drawing in metric but I want the results in feet and inches, do I draw it in metric and have Autocad spit out a feet and Inches drawing, is that even possible. Or do I do the conversions up front and explain to the client that he will get his metric drawing back in feet and inches.
Second part, if the drawing is in metric do I open the Autocad Civil 3D metric icon or does it matter. Where I can read up on why there is a metic and imperial Autocad icon?
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Mar 1, 2012
what is the main advantages and disadvantages of these two programs.
Because i actually want to focus of someone of these two programs
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Feb 28, 2013
What is the difference between Annotation Text versus the Civil 3D Lables? Do you have more control over the annotation text? Do lisp routine work better for annotation text than the Civil 3D Labels?
I have a routine that will create a quick leader and text from the object layer that it selects.
Layer EX-PAVEMENT ----> the quick leader call out would label it as Existing Pavement.
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Jan 19, 2013
1. find the attached “Rays on Oval.png” file. (Tried attaching .cdr file but the File Size is 400KB.)
2. I would like to Repeat / Duplicate that Black Color on Outer Path of Oval Shape. (Like shown in the Yellow versus Black. The Yellow is a Circle and the Black is from Star Tool)
3. I think the Best Bet would be to Link the Rays to the Outer Path of Oval Shape.
4. I need the Rays and Oval as 2 Different Objects so that I could Change the Color Scheme.
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Jan 3, 2013
I am trying to standardize the company I just started with and I believe the Named Plot Styles are definitely the way to go, rather than Color Dependent.
Now, the question I have is when I created my Named Plot Styles, I created multiple styles with different lineweights. I plan on creating a base template with layers and have the lineweight based on the plot style. Is the correct way to handle it? Because we work for a certain large state DOT and they do things slightly different. They have only 2 named plot styles (existing, proposed) and change the lineweight directly in layer rather than the lineweight being dependent on the plot style. Now truthfully, there is no difference that I can see in the plot styles they created except for the description.
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Feb 22, 2012
why a line drawn perpendicular to a spiral curve in C3D is not radial? If so, what is it perpendicular to? It can result in several feet of difference.
Also, labeling an alignment along a spiral using the automatic routines appears to run perpendicular (whatever that is - not radial).
Perhaps I'm not looking at the math right (its been awhile since spiral curves in college) but it seems to me that a curve of diminishing radius should be labeled radially. Is that not how C3D sees it?
The only other thing I can think is that C3D is running perpendicular to the small tangents or arcs that it puts in to approximate a spiral curve.
C3D - 2014, Sincpac Addon
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Oct 22, 2012
Has instances where you set your tolerance for the maximum triangle lenth to say 50m to reduce the amount of triangles along the edge that run at long distances. When I do this I end up with multiple surface holes and I'm not sure why as there are points in the area.
I thought well maybe it's because i should've reduced my max triangles first then added breaklines. Would this matter? I also thought I could add a line to the surface to fix the holes vs. deleting surface lines along the entire edge of a surface for many many miles.
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Feb 23, 2013
I have survey data of the inside floor of a pond ( the pond has a flat floor ). The surface made from the survey data needs to extend to the outline of the pond instead of the outline of the survey points.
I tried the smooth surface method of kriging with a grid base and I sellected the outline of the pond for the output region and that worked somewhat but there are still gaps between the boarder and the surface.
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Nov 12, 2013
Is there a method to obtain the overall Site boundary? I have not found one, if there is, but it would sure come in handy when creating reports. We must always include the project Boundary as the first item in a report, so being able to add it to the existing reports would be a huge timesaver.
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Aug 14, 2013
I have alignments that go in and out of a surface boundary (this is because I have a surface that represents the bottom of pavement.) I want to show the surface profile with the gaps in the profile view (where there is no surface. However in the profile view the gaps are sometimes connected with a straight line instead of being blank.
How can I have a surface profile represent the bottom of pavement properly? (An alignment that is not fully withing the surface boundary.) I know I could add the profile multiple time with different start/end stations But, I don't want that, I want it to be dynamic, as the alignment will change.
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