AutoCAD Civil 3D :: How To Find What Spiral Type Has Been Drawn In Alignment
Jul 3, 2013
I have got a drawing with an alignment containing spiral-curve-spiral entities. I need to find what type of spirals are used in these entities - clothoids, cubic parabolas or other. Is there any way, to find it? In panorama and sub-entity editor there is only spiral description without exact type.
I draw an alignment for road. I turned off design criteria and i used data from manual for my country Slovenia. I need spiral in, curve and spiral out on alignment. Finally i got that alignment. Then i insert sample lines along the alignment. Then i saved autocad civil 3d file and shut down the program. When i reopen file, i see that sample lines after the spiral in being erased. Sample lines stayed along first tangent, after that they were erased.
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
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.
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?
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.
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.
I designed a logo for some family friends, and the main part of the logo is hand-drawn, and it is made of multiple (a TON) of strokes. The company is getting t-shirts made, and the t-shirt company contacted me to get a "vector file with the fonts outlined." I know quite well how to do this on actual fonts, but how to outline a series of strokes.
I'm looking for a way to determine (and preferably edit) the values of P1 and P2, the offsets of the initial tangents into the PC/PT of the shifted curve. It's not in the (admiteddly basic) book I have either.
[Edit: OK, after double-checking,I just found Widening offset clothoid, but I'm still none the wiser.]
I need to reproduce an alignment shown on some plans. I have not had any luck finding a tutorial about how to re-create an existing alignment.
I have a page of plans, it shows the center line going from a back tangent, into a spiral, through a curve, and spiral to tangent. How do I create an alignment from this data?
I am a surveyor and I'm having a hard time understanding the alignment creation tools, in my data collector it is much simpler, you enter the back tangent and the end radius and the length of spiral and whale, but I'm trying to build a corridor, so I can stake the dtm.
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.
I'd like to view the parameters of my aligments elements near the geometry points. That is, the station and the radius value or spiral parameter (or what I want). I have explored the text & reference text but there is not R or A elements...
How is it possible ? C3D can detect the type of geometry poinr, so it would must to know R, Lenght,. A, etc....
In addition I 'd like to do it using the aligment label set.... sci-fi , isn't it ?
When you have to create plans, the aligments need to show a lot of information. Doing it manually is so boring..... (and in XXI century ...... )
I understand how to get a shape drawn in cross section view -- assign a shape to the area in the SA. I've done that but now I need/want to take the next step.
Using SAC, I created an SA that draws my RockFill but it only shows up in cross section view.
How do I spec that I want the shape to show in plan view too? the shape in plan view should be the daylight line on one side and the RockFill Line on the other side.
“Basic assembly” is not drawn correctly in the section view,In the screenshot below, the “Basic assembly” is not drawn correctly in relation to the existing ground.What might be the reason that it is not closed with the existing ground?
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.
I have yet to produce a profile. I created a polyline and turned it into an alignment.
Looking at alignment Sample(3), I see that it is not superimposed over your surface. The polylines are, but the alignment is not. That will disallow creation of a surface profile.
Is the sample5 an alignment that sits on the surface? how come there is still no profile?
I am a C3D newbie who used ground survey points (Serrano_EG_surface) that generated a Civil 3D surface. The white line is consist of arc segments that I turned into polylines and then into individual CL alignments. The first alignment ,which has its left and right offsets do not generate the profile view that I needed to be created. There was a prompt asking for a profile to choose, but I don't know where in the drawing or in the propector panel to click on.
1. Are the ground survey points good enough so that any alignments over the those areas can provide me a surface profile, a design profile, cross sections every 50 feet, so that I can submit a preliminary drawing for environmental permitting. ?
2. When I check the object browser, the aligments preceding each other are not in the same elevation it seems. Do I have to to transform each of the polylines first into a 3d polyline and then an alignment so that I can create a profile.
3. Eventually , I wish to connect all these alignments to model a 1.5 mile rural road (more like an access road to a water reservoir).
4. What's a best techniques to keep track of modeling a road.This question pertains to e.g the object browser as one of the useful aid. I've also used the inquiry tool but not used it for its full potential.
I have a project that comes and goes. It was actually started in Softdesk. Right now I'm working in Civil 3D 2012. I have an alignment that represents the left edge of pavement. Although I'm calling an offset alignment. It was created before they existed. So it's not linked to the centerline. There have been many changes to it over the past few years. Now it has a problem.
I wanted to edit in the Panorama. Right-click > Edit Alignment Geometry > select Alignment Grid View from the Alignment Layout Tools. When I went to the last segment in the Gird View, which was near where I wanted to edit, a segment about two thirds of the way along the Alignment was highlighted. Further investigation showed that although the whole Alignment would highlight when selected, all commands said the Alignment ended much sooner than the end station.
I've found that that alignment has been broken for quite a while but was intact at one time. My question is - What's the best way to repair/recreate it. I know I can explode it and create a replacement Alignment from the resulting entities. But is that the best way?
Civil 3D 2012 SP 2.1 Dell Precision T7400 Xeon CPU 3.16 GHz Nvidia Quadro FX 4600 12 GB RAM Win 7 Pro, 64-bit