AutoCAD Civil 3D :: Combining New Survey Points Into An Existing Surface
Aug 28, 2013
Every week I recieve new survey data (typically around 20 points) to insert onto an existing surface of our local landfill.
The surface is displayed as minor and major contours. The new survey data typically always has higher elevations then the exist surface and shot roughly 2 meters apart.
Here's my issue...when the survey data is inserted and the surface is rebuilt, the contours seem to turn into little cones at each new point. see attached...
how to eliminate these 'cones' so the surface contours seem more relistic?
I have been given a survey on AutoCAD which was orginally 2D with the levels written in text next to it. I changed each point (690) to include the level in the Z-direction. I am trying to calculate volumes of topsoil removal and then cut anf fill volumes.
So I opened up Civil3D in metric template and imported my drawing as I have not been given a ddata file with the co-ordinates. Unfortunately I am having trouble creating a surface between the existing points.
I am having some trouble creating a TIN from a point layer in Civil 3D 2011. Would the best course of action be to extract the points from the drawing and creating a surface from there, or is there a way to create the TIN around the existing points in Model space?
I'm much better versed in AutoCAD, but excited about furthering my understanding with Civil3D.
3- Import my FBK file. The survey figure linework generated doesn't overlay my previously imported asc file. I checked the FBK file and the coord's match the asc file. I'm confused as to why the survey figures don't overlay the survey points from the asc file, since the coords match in both? The survey figures are all shifted .7' and 54deg. from the points. The elevations are all good on the survey figures, as they match the survey points.
So my quick fix is to explode the survey figures, since I don't really need them for what I'm doing, and then select all the 3d polylines and move them to them to an appropriate survey point. Everything then looks fine and I can get the job done.
However, I would like some insight as to why this might be happening. It's strange that the FBK and asc coordinates match, but the survey figures aren't lying over them.
I'm trying to create an all new existing surface over existing ground. I have a TIN surface of the EG, and I have drawn overlay splines that describe the new surface, but how to go about creating that design surface.
It is a compound surface, open on one end and closed all around on the other, somewhat like a half of a football stadium, but with an irregular upper edge because I am needing to figure out cuts and fills to manipulate the EG into this new surface without costly major terraforming. There is about 40-50' vertical elevation between the "field" and the upper rim with a generally constant 7-10 deg. slope all around. I'm just at a loss to figure out how to approach this project, and am quite new to Civil 3D.
Civil3D 2013 MacBookPro 17 - 2.4GHz Intel QuadCore i7 (Late 2011 build) Microsoft Windows 7 64bit 350GB Bootcamp volume
I am trying to add points into a surface. I have done this before without any problems, but now I am having issues.
When I ID points which makes up the surface it gives me the correct Z level e.g. 24.5m, however when I hover over the surface it shows me the surface name and a different z level e.g. 0.65m. What is the reason for this difference in z levels? I think this may be causing the issue I am having when I add new points.
I select the surface and use the 'edit surface command' in the ribbon, choosing add point.
When I add a point at the level I require(23.89m), it puts it in a lot higher than the surrounding area, so I tried to put the point in to the lower z levels (0.4m) it puts it in a lot lower!
I am fairly new to the Civil side of AutoCAD, as I used to work primarily in Map. I am working on a street rehab project in which I need to take survey points showing existing elevations (centerline, flowline, and top of curb) and show existing profiles in a profile view. I have no problems setting up the profile view(s) or the centerline alignment, but I am having problems with creating the profiles themselves, and I have a two part question about them
Question 1: According to the user's guide, the correct way to set up an "existing" profile is by extracting it from a surface, but I don't have a surface to use. In reading through the various profile types, the best way to set up what I want seems to be by using the profile layout tools, but the help says that a profile layout is supposed to be for a final "proposed" profile, not the existing. Does this actually matter? Will I be breaking Civil functionality by creating an existing profile using the profile layout tools?
Question 2: In reading through the profile layout tools, everything seems to be centered around PVI's. Even using the "tangent tangent" method to add in points seems to only use the first and last point as controls, with everything in between treated as a PVI. If you look at the documentation here, points one and four are treated as actual elevations, while curvature occurs at points 2 and 3. In my case, since what I have is a series of actual points on a surface, each point should be an actual surface elevation with curvature occurring between points and not at them. What method should I be using to input the points in the profile?
I had an issue where I dropped points into my drawing for a survey and they weren't at the distance compared to recorded plat. I have checked the points mathematically, and they were dead on. A coworker suggested that I WBLOCK the points I was working with that way I don't move single points out of place. I disagreed, because the way i move points is I use the TOOLSPACE and move them as a group. So what I did was to drop the points again and now they were dead on the second time. I don't like turning points into a block due to the fact that it messes up my drawing.
Im currently using an addon for Civil 3D called Novapoint. It allows me to create 3D models of surfaces made out of 3d faces and easily models cut and fill 3d-models for me.
The only thing i need to create a cut and fill model is one or several ground surfaces (existing ground, earth layers, rock etc. whatever i need) and a closed polyline/3Dpolyline that represents the level I want my cut and/or fill model.
I enter the spcifications I want such as; earth cut angle, rock cut angle, fill angle, select which surfaces i want to include in the model calculation and select the polyline.Novapoint then calculates the cut/fill model from the surfaces to the polyline and models the different cut/fill angles and gives me the results in a 3d-face model and a specification of the volyme of rock cut, earth cut an fill.
1. Novapoint is quite unstable and crashes alot
2. You cant create profiles out of 3d faces
3. Novapoint does not automaticly combine the start surfaces with the modeled cut/fill surface
4. A large surface made out of 3d-faces demands alot of computer power
So I want to how I do the same that Novapoint does for me in Civil 3D? (I have access to Civil 3D 2007-2013 depending on which one you're using)I know I can take the 3Dfaces i created in Novapoint and make a surface in Civil 3D with them but I want to exclude Novapoint completely.
My field crew assumed a coordinate system and surveyed a job. I need to rotate the points in my dwg to match another survey. I have not found a rotate points command. Other LDT type commands have been replaced by standard ACAD commands by adding the transparent commands to them. I tried to use the ACAD rotate command and the transparent commands to rotate my points, but there is no transparent command to find multiple points. I need to select the points by point number range if possible.
1. Import survey point via ascii file into a new drawing call it Field-dwg. 2, Create a survey data base 3. Import all points in the the data base under import event. 4. open existing drawing, work-dwg, import points as needed from the Survey Data Base.
Problem : Survey points needs be renumber.
I goto field-dwg, and fix the points (renumber).
open survey data base for edit, and import Event, field-dwg/points/update : nothing happen
I was wondering what is the difference between importing points under the Prospector tab versus importing points under the Suvey tab? And how either of the two methods relate to using Data Shortcut?
I would like to create a survey topo drawing that contains points and surface information which other Design drawings that are attached to the Data Shortcut project can access but not be able to make any changes to the original points and existing surface information.
I would like to remove certain points from my survey database. I have all the points that i want to remove queried into a point group. Is there a quick way to delete these from the database?
what if i have points that are non-consecutive? the survey crew is new at this so i'm getting some higher number points that line work wise appear in the middle of lower number points. the figure seems to draw numerically. is there a way to do a figure by proximity?
Dell Studio XPS 9100 Intel Core i7 CPU 930 @ 2.8GHz 12GB Ram 64 bit C3D 2012 SP3.0
trying to create contours from an exiting survey file. I am new to Civil 3d 2012. What I need to accomplish is create a 3d topo from the points with contours and then create a 3d model of the area.
I have created cogo points for field staking. I'd like to share them through the survey database.Can I add the points to the Survey Database without first having to export them to a file?
Sometimes when i import points Civil 3d creates a Point group in the drawing with the name of the point file, sometime it does not. I prefer when it does create this point group. It always seems to create a Survey Point Group. How do i control wether or not a point group is created in the import?
Civil 3D 2013 HP Z400 Workstation 6GB of RAM 296GB HDD ATI FirePro V5700(FireGL) Win 7 Home Professional
How to set stakeout points on a pipe network? I have an alignment from the engineer that also has a pipe network associated with it that I would like to automatically set points vertically and horizontally on (like I can do with a regular alignment/profile).
We need to remove multiple survey database points from a drawing but not all, due to construction on a site previously surveyed. What is the best method for this?
While adding a vertex to a survey figure, if I click too near (like within 0.5') a survey point, the new vertex snaps to the survey point and uses its point number as the new vertex. Is there a setting for this snap feature to turn it off or change the tolerance?
I am creating my Final Grading surface with from 2 surfaces - a proposed road surface and a proposed grading surface. (Note of roads within the road surface)
The issue is that when I paste the proposed road surface (that consists of several looped sections) over the proposed grading surface, the proposed grading surface within the looped road areas dissappears.
I have tried several options using boundaries for the inner looped areas on my road surface, and has altered my order of opterations for my final surface edits, and many other things also.
I am using AC3D 2014. I have created a surface from downloaded DEM points, but, as expected, the contours are not as accurate as I would like. They vary from known elevations anywhere from a few inches to several feet.
I also have survey data from approximately 500 points which include Northings, Eastings and Elevations. Is there a way to add these points to my existing contour surface and incorporate these know NEZ points such that he contour surface is more accurate?
I have already converted my "known point" file to a .txt format with comma delimited information.
I am new to Civil 3D upgrading from LDD2009. I am trying to edit some point descriptions brought in through a fieldbook import through my survey database. Under my survey database in Survey Points I hit EDIT POINTS and it brings up the SURVEY POINTS EDITOR. My points are listed as white observed points but when I click on the description cell it won't allow me to change anything.
I remember in LDD you could insert points in an area, Is that possible in civil 3d. I have a small area of an big project that i want to review all the points. This project has 517000 points in it so it takes to long to insert all of the points.
My surveyor gave me a topo survey done in no particular coordinate system. He set up his total station on a PK nail and gave it a coordiante of (5000, 5000, 100). I used this survey to generate a surface.
I also have a site survey of the same site, done in state plane coordinate system. the two surveys have mulitple common points; pk nails, iron pins ect.
What i need to do is move the points for the topo survey over to the survey that is in state plane. A simple move command will not do this.
How do i go about moving these points to thier correct location without having to manually edit the .txt file?
