AutoCAD Civil 3D :: Creating Surface Boundary When Using OverlayWidenMatchSlope Subassemblies
Jul 12, 2012
I'm creating a corridor to widen a road on the left and right sides. I am using OverlayWidenMatchSlope, with various other subassemblies. In places it daylights, in places there's a cut wall modeled from generic links. I am trying to create a good boundary for the corridor surfaces but I'm puzzled by one thing. The OWMS subassembly has a P2 code, but the corridor will not generate a featureline connecting the P2 codes..
I will try adding another baseline, and a new subassembly that will just use a generic link to target the sawcut line (the insert point for OWMS). That should give me a featureline I can use for a surface boundary. Is there a way to generate that featureline from the inside edge (the insert point) of the OWMS subassembly?
Win 7 64-bit, Intel i7 920,12 GB
Win 7E 64-bit, Intel i7, 12 GB
C3D 2012
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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 3, 2013
I am trying to set up a corridor with multiple materials with multiple pavement sections. For example, I have concrete and asphalt surface pavement, about 4 different kinds of base material and 2 different sub base materials to use. It doesn't seem like you can get quantities divided up like that. It seems like you can only get the 'base' material counted up with the quantities and you can only assign one material to it. Is the answer to create multiple corridors for each pavement type that has their own Code Set to assign to each corridor?
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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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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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Aug 7, 2012
The odd shapes are outside the daylight line. They follow a straight-line around the daylight limits (see third attached file), apparently triangulating unwanted areas. I've used a corridor shrink wrap for the surface boundary.
What is the best bet? I'd rather not draw a polygon along the daylight line and use it as a surface boundary, since it could change. Setting a max triangle length in the surface does not seem to provide a desired result.
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May 14, 2012
I have problems applying an Outer boundary to eliminate a small area within a big surface (and a few Hide boundaries within that Outer boundary): Civil 3D somehow creates extra triangles within my surface (that don't really make sense to me). I am applying the boundaries as non-destructive boundaries as I need the surface to extend all the way to my applied boundaries. The surface needs to be untouched (except applying a few Outer and Hide boundaries) as it is design data.
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May 22, 2012
When I create a corridor surface I usually create a suface boundary automatically by daylight.Half the time this works fine, half the time it doesn't work at all. If I view the corridor in 3d view it looks fine.
I tried to create a shrinkwrap polyline to use as a boundary but when I picked the corridor in the shrinkwrap command
it locked up my computer. These are just simple corridors with no intersections. Why the automatic boundary only works intermitently? Is there a better/easier way to create the surface boundary?
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Jun 18, 2012
I need to adjust a surface boundary. I need to remove a corrupted area in my surface. I do not need it. Is there any way to drag a boundary so I can exclude some of my contour area? Is there a command under settings on tool space that I may have overlooked? This surface was furnished by a client so I do not want to rebuild or alter except to exclude some contours.
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Aug 17, 2013
what is the trick for holding triangulation within a surface boundary? I recall a setting somewhere but can't seem to find it... attached graphic, would like to hold the surface triangulation within the arcs which are in the surface definition as boundary
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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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May 28, 2013
I have a surface that I created by joining to surfaces, and now I want to reduce my boundary, how can I edit it?
windows 7, intel I7, 8 MB RAM, civil3d 2013.
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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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Jun 22, 2012
Cannot get corridor surface boundary from daylight points. Is there another way so that I do not have to trace the outer limits?
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Jan 24, 2013
I'm looking for solution for this error: Mask '0' NOT added to corridor surface 'Corridor - (1) - (1)' as boundary due to crossing polygon.
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Jun 22, 2013
I have problem with corridor surface boundary , in curve boundary line is jumping on daylight fill , but i have created surface on wearing layer ,also when i am adding boundary there is only 3 types of adding , corridor extends , polygon and interactively , photo attached.
I am using Civil 3D 2014
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Jul 16, 2012
I'm working on a project to widen one side of an existing road. My corridor uses OverlayWidenMatchSlope to create a widening that tracks the existing road cross-slope. All is working fine, except in one location where the proposed centerline crosses beyond the existing edge of pavement.
See the attached image below - the existing EOP's are in red, the existing crown is in white. The proposed centerline (my corridor baseline) is green, and the left-side proposed EOP is green. Up to the point where the prop centerline crosses the existing EOP the OverlayWidenMatchSlope subassembly finds and matches the existing cross-slope, so the new widening has the same cross-slope as the existing.
Once I get to the region where the new centerline passes beyond the existing EOP, I don't know what to do to create an assembly that will match the existing road cross-slope and target the prop EOP. I am considering making a new temporary alignment just in that region along the crown, then making a new corridor region using OWMS just to get a surface running out past the proposed left EOP, then I can target that surface with a generic link in my main corridor, create a profile from that, then use that profile as a target for my main corridor in that region.
Is there a link that tracks an existing grade between two sample points the way OWMS does?
Win 7E 64-bit, Intel i7, 12 GB
C3D 2012
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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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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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Sep 14, 2012
I have created a surface from a corridor. I set the boundary of the surface to the daylight of the corridor. In some areas of the corridor the surface does not triangulate see attached.
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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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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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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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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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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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May 27, 2012
I can't seem to create a planar surface that shows up in the tool space as a TIN.
Some background, I have a TIN of a pile of dirt that I created from a point cloud (it shows up in the toolspace under the surface section). I also have a plane that intersects that dirt pile which indicates ground level. I want to be able to calculate the volume of the dirt pile by creating a volume TIN with the ground plane and pile TIN, but the ground plane does not show up in the toolspace under the surface section so I can't use it to create a volume TIN. I created the plane with the planar button in the ribbon and manually lined it up with the pile.
How can I convert this plane that is clearly in my project but not in the list of surfaces in the toolspace into a TIN to use in a volume TIN?
I'm running Civil 3d 2013 and you'll probably have to explain things like I'm 5 because I'm not familiar with the interface yet.
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Apr 2, 2013
I have a project that I need to map the terrain as a tin solid so that I can do some cut and fill analysis. I have downloaded a orthographic and elevation data from the USGS website. I cannot get AutoCAD civil 3d to create the contours properly.
My current workflow is: use mapwspace to bring up the task pane. Connect to the geotiff image in the 1-153383539 folder. Then I try to create the contours and the option is greyed out.
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Dec 10, 2013
This is the first time I have imported a .dgn file into Civil. The drawing contains contours lines with Z elevation data. When I create a surface using this geometry (polylines + some lines) the surface seems to be scaled in the Z axis by 12.
For example pline (from dgn) is at elevation 46' but the Civil3D surface is 552'
I assume this is a setting in the Surfaces dialog box, but I cannot find it.
Also the elevation field in Properties from the dgn contours is weird. For example, in one area the (pline) contours display -28', 26', -24', -22', -20', -18' in Properties but Civil3D interprets this as a downward slope - which is the actual field conditions. I don't understand the conversion going on here.
The geometry of the pline and contours generated from the surface seem to line up in a side or isometric view (see attachment).
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Oct 1, 2012
Been chatting with an architect in my office, and he was asking me if we could make our TIN surfaces smooth. I cannot find a way, would it take a 3rd party program? He wants it like the image i attached. How to achieve this with a TIN surface?
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Oct 11, 2013
I have a finished grade surface created for my site but I want to lower the parking lot portion of it to subrade elevation. What would be the ideal way to lower a portion of a surface?
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Apr 24, 2012
I will try to write this as clearly and shortly as possible.
I have two surfaces created lets call them Surface A and Surface B.
They have different elevations in different areas, sometimes Surface A is below Surface B and other times Surface B is below surface A.
Is there a way to easily create a Surface C which is a combo of Surfaces A and B taking which ever surface is lower?
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