AutoCAD Civil 3D :: Projecting Linework On Design Plan To Corridor / Surface?
May 13, 2013
My company had always used LDD until we were mandated to switch, our first project in Civil 3D is in the works. So far we have gotten through the beginning stages (alignments, profile, corridor, assemblies) but we are having a major issue with where to go from there. Right now I am trying to complete the design line work on the plan (wheelchair ramps, driveways transitions and signage) As of now I cannot get anything to line up easily with the corridor. I have been able to snap to the corridor so I can create a line at that exact spot to be correct, but then when I offset it will not change the elevation, I tried doing feature line and projecting the feature lines to the surface and some of it works but it becomes very buggy. My transition lines don't transition and some other lines I would expect to be at the same elevation have major grade changes. How to create the luinework at the correct elevation and with correct transisions along your corridor and surface?
I have alignments and profiles for the centerline and 12.5m either side. I would like to create a surface from a corridor by using the three profiles but extending the slope beyond the 12.5m either side.
I can easially create a surface between the three profiles and alignments, however I would like to extend the surface outward a further 10m in both directions at the same transverse slope. note that the transverse slope is variable across the entire runway.
I tried this using the "LinkOffsetAndSlope" generic link by making each subassembly 22.5m long and linking only to the profiles 12.5m from the centreline. However it seems it simply applies the levels from the 12.5m offest profiles at the full distance of 22.5m.
What's the best workflow to extract the linework from a corridor - I need the linework as 3D polys for export to another modelling system?I have tried the extract feature line from corridor but it is incredibly tedious so I have lately done the following
1 Rebuild Corridors and Save file. 2 Select Corridor, Isolate and Explode twice. 3 Select all the lines and JOIN which then creates 3D polylines. 4 Wblock the 3D polylines. 5. DO NOT RESAVE...!!!
Is there a better way?
IDSP Premium 2014 (mainly Civil 3D 2014 UKIE SP1 & Infraworks with some limited 3ds Max Design) Win 7 Pro x64, 256Gb SSD, 300Gb 15,000 rpm HDD 16Gb Ram Intel Xeon CPU E5-1607 0 @ 3.00GHz (4 CPUs), ~3.0GHz NVIDIA Quadro 4000, Dual 27" Monitor, Dell T3600
See attachments. See the green linework in each plan that is skipping across the corridor. These are two different projects. I have seen this numerous times but have not found a solution or even what is causing the problem.
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.
My corridor surface is not matching my corridor top links. see attachments. this is affecting my volumes!
The section-plan(surface red).png is showing the section editor and the plan view. the red highlighted line in section is the corridor surface and as you can see in plan view the surface is incorrect and wiggly.
The pdf is all my sections with the red linework being the corridor surface.
all of a sudden whenever I run audit on my corridor file the surface definition becomes a snapshot. To add to the drama, the corridor surface will not paste into an empty surface. Why?
My problem added with pic ... I want to make volume calculate for sample road project. When I try to compute materials I cant use Corridor surface for DATUM... There is only target surface on option..
I am trying to visualize a road project. The problems is, whenever the corridor surface goes below the EG surface (when the road is in cut) the EG surface is the only visible surface.
I sort of need to subtract the corridor surface from the EG surface, or merge the both surfaces into one.
I made an alignment, profile, build an assembly with it's constraints (2:1 until a certain elevation and then 3:1 to the existing ground), and made a surface from that corridor.
Now i wanted to know this : How do i generate a polyline with the assembly information ?
Using : Autodesk Civil 3D 2012 OS : Windows 7 - 64 bit pro
I need to design a project but ı cant..ı have two profiles in use for one alignment..ı want to use left profile for left side, use right profile for right side.and ı want to draw cross section only one..how can ı design like this project..
I have a problem when calculating the volume of a design plan, the slope of the land, the design had to be made so as not to slide trap. How it makes grading a trap,
I've got a highway project for which I'm modeling the corridor but the design profiles given to me are for the right lane top edge (ETW) and not the centerline (crown). This is an undivided planer roadway with a typical 2% cross-slope. How can I use that profile for the right edge to run my corridor? I can't seem to get the corridor to use the super table that is attached to the centerline when I use an offset assembly. Is an offset assembly the right way to go with this design?
What I've done just to get going is to take that right edge design profile and draw it in my centerline profile view, then lower it 0.24' (which is my 2% normal cross-slope for a 12' lane) and then use that as a centerline profile and let my normal super assembly and table data control the corridor through the supers. So far that is working--but is there a better way to do this?
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.
I am having some issues with my corridor. It is for a 1.5 mile two lane section of highway. When I created the corridor, I used 15 assemblies. Now, when I try to create a corridor surface, I have issues. The file crashes when I try to load the surface.
I have one corridor with several baselines. I have asked it to generate a corridor surface but it has left out several baselines from the surface. I have ruled out assemblies. I am not sure what is going on. I am also unable to get feature lines from this portion of corridor as well. The corridor builds just fine and I can see what the daylight lines are etc. What's going on. Yes I have audited the drawing.
After you go thru and setup all of the links and feature lines that you want to use to create a corridor surface, is there any way to save that particular setup to be used on other corridors? That way you would not have to select all of them again and again, every time that you wanted to create, say a datum surface.
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?
I created a surface corridor, called STAGE 1, that I would like to target with a second corridor, STAGE 2. In a new file, I data referenced in STAGE 1 surface. It is showing up as an option for me to use as a target in my STAGE 2 corridor properties. Once I look at my sections it shows there is nothing targeted on that side.
I've created a corridor with kerbline widths targeting featurelines. I've created the corridor at 1m centres and have added a number of individual points to ensure it properly picks up all of the geometry of the target featurelines. However, the surface that has been created has numerous holes in it along one side and I can't understand why.
I have been banging my head against a wall for a while now trying to get this corridor surface to form properly. It wont seem to triangulate properly from where I have copied the intersection into the East-West corridor.
I have had this issue at least 3 times and twice on the same drawing. I create a surface from corridor and add several polylines and feature line as well as a boundary to the surface. Randomly it will lose all definition (breaklines and boundary) and i will have to "select similar" (and hope I get everything) and add all of my definition back.
It seems to only occur on large files and when my frequency is tight on curve and vertical curves.
I built a corridor, then corridor surface. Then I changed the corridor onto a different profile. I noticed that the contours at the end were going crazy: the new profile ended before the corridor and everything was going down to zero elevation. So I went to edit my corridor region. I enter the required station, and my contours disappear.
Observations so far:
If I set the end of the corridor region to 2+377.91 to 2+384.54 inclusive, the contours on the surface disappear. The triangles and boundary still display, and the surface gives a Z reading when I hover the mouse over it. If I set the region end to something above 2+384.54 or something below 2+377.91 the contours reappear.
My profile ends at 2+383.00, and I would like the corridor and the surface to end there too!
I have created a roundabout then design a profile for center alignment. now when i am applying the corridor to it there is a small triangular void leaving behind. i have set the targets perfectly.
On my corridor I am using Link Slope to Surface, using a 3:1 slope. But it is giving me a 3:1 slope radial to the corridor - what I really need is a 3:1 slope between the contours themselves. On the inside of a tight curve, this makes a big difference. See the attached screenshot. Is there a workaround for this?
I have 2 roads crossing, and I have created the 2 corridors, and an intersection object created. I split the 2 corridor regions and put the intersection in, and then closed back in the regions to the start of the intersection object (region). Now - how do I make that all one corridor object that reacts to either of my profiles, and is only one corridor surface? - the corridor surface ignores my region boundaries Or at least 3 objects that interact with each other properly. Image 1 highlights the start/end of the corridor regions, and image 2 shows how the surfaces look - why doesn't the corridor surface start and end where the regions do?
