AutoCAD Civil 3D :: Average Elevation For Zoning Analysis?
Nov 8, 2013
We have to compute the average elevation along the front, sides and rear of a proposed building envelope to calculate the required set back.
Right now I am setting FL with elevation nodes at the required interval, assigning EG elevation and pasting from the panorama to excel to compute the average.
Is there a way I could create a toolbox report to do this? Maybe even from a profile report?
HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram
64 Bit Win7 OS
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Feb 8, 2006
I've tried to create a surface analysis by using a point group reading xdata to set the elevations and when I set my surface properties to display the elevation shades it will only allow me to set the range to 5 or less. All of the other analysis settings for direction, slope, and slope arrows allow me to input the nuber of ranges I want, but I need the elevation analysis.
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Feb 23, 2012
I've got an elevation analysis with a nice range of colours in plan which look fine but I want to display this in a 3D view for a presentation.
I selected the object and went to object viewer but I can't get the analysis in colour. I'm guessing I'm missing something obvious but can't figure out what...
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
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Jan 7, 2014
Is there a way in AutoCAD to calculate the average width between two irregular lines, such as the average width between stream banks?
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Feb 20, 2013
What formula Civil3D uses to calculate the average slope of a surface?
The formula I am using is S = I*L/A
S = Average Slope
I = Contour Invertval
L = Length of Contours (ft)
A = Area of parcel (sq. ft)
I just had to do four parcel calcs and the percentage I find using the formula is always 1-3% lower than the percentage Civil3D spits out. I can't find anything about how Civil3D arrives at that number, it just appears. I assume that Civil3D is more accurate but I can't give that number to a client without knowing how the program arrived there.
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Feb 18, 2013
I have been able to undertake this with other software and have desperately tried to find this same function in Civil 3D .
Is there a command that returns the average level of any particular surface within a specified area, for instance if we have a generated a large surface and then draw a square in the middle of the surface, can it calculate the average level within the square only?
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Mar 9, 2012
I have 2 different surveys of the same area of ground. If i create a surface from each data set, can they be averaged into one suface? I know you can past them together, but how does it paste? the first one on the bottom and the second on time? I would like an average.
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Jul 11, 2013
I am trying to create an elevation label that will give me the spot elevation followed by the letters "TC" and then on the line below subtract 4 inches from the elevation followed by the letters "BC". It's easy enogh to add the letters but the simple equation of elevation - 4 inches eludes me.
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Dec 19, 2012
When I snap a point to an object, the point takes on the elevation of the object. I would rather the point's elevation stay as is.
-changing osnapz variable
-latest civil 3d service pack
A few weeks ago I did not have this problem but once my computer was switched to the company's global server and c3d was reinstalled the problem appeared. Furthermore (post switchover), when a colleage of mine prepared a simple test drawing with just a line and a point, he was able to snap to that line without the point changing elevation. When he sent that drawing to me and I tried snapping the point to the object, the same problem occured with the point taking the elevation of the line object. I suspect it is a system variable issue
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Apr 16, 2012
i have some existing drainage pipe and structures in a base plan that i need to change the invert (which is the easy part) and the top elevation to the existing top elevation that does not meet the minimum presect in civil 3d 2012 is there a way to change these min. to match my exisitng elevation for example i have a catch basin invert is 15.45 top is 17.56 with a 18" rcp the cover will be less than 12" and i need to change this.
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May 16, 2013
Any quick way of calculating average Parcel Area? I used to export to LandXML and do an area report in CSV. That doesn't seem to be working for me when I export out of C3D 2012.
The workaround I found was to select all the parcels in Prospector, copy to clip board, paste in excel, find and replace "_Sq. Ft._" with 0, then do the average.
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Aug 6, 2012
I have an acad document connected to some .shp files, which contain polygonal shapes with some meta-tags.
I want to achieve the following: draw a polygonal shape and select all the tangent areas (I already know how to do so)take a property of those areas and calculate an area-proportional [or: area weighted] average value (proportional to the partial area defined by the drawn polygonal shape). I tried to achieve this by splitting the objects and merging them again with defined splitting (area proportional) and merging (average) options. The problem is: splitting & merging doesn't work until I disconnect the data files (checking the objects out doesn't work) and even then I can't split the areas. And, more important: This doesn't create a weighted average and I don't even want to manipulate the objects! I just want to get one value out of all these steps.
I appended a screenshot of my file. E.g. I want to take the value 923.2 and multiply it with the corresponding area percentage it represents in the drawn shape. So the calculation would look something like 0.02*923.2 + 0.2*926 + 0.12*945,9 [...] until all the 100% are covered and I get one single representative value.
I use AutoCAD Civil 3D 2012 on an Intel Core i7, 12GB RAM, 64bit Win 7 Pro SP 1 PC.
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Jul 6, 2012
Am working in River Analysis dwg and go to save and get message "One or more objects cannot be saved to the specified format."
What's the deal?
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May 20, 2013
Where can we find documentation or tutorials on the River Analysis package as it is with IDSU 2014?
We are in the middle of a few projects using BOSS's RiverCAD but with the new 2014 License files we can no longer use the AutoCAD 2010 that ran with RiverCAD.
So, I'm scrambling to get my user up and running with River Analysis and how (if possible) to port our RiverCAD projects to River Analysis with as little pain as possible.
I have to admit, I don't use RiverCAD and have not yet installed IDSU 2014. (I'm making the deployment now).
I'd really like to ditch having to support AutoCAD 2010 and RiverCAD....
[URL] .......
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Jan 3, 2014
I have a large 200+ acre site that I have created a volume surface and analyzed it using the elevation banding with color to show different levels of cut and fill. The owner has broken this area into 10 different irregular zones. Is there a way to do the elevation banding of a volume surface and have it color the individual parcels. They don't all have to be at once. I can do each one at a time and PDF the drawing.
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Apr 3, 2012
how do I use Civil 3D to do basic pipe analysis computations? For example, I give it the slope, material, etc. and it spits out the flow velocity, flow depth, slope min, etc.
All I want for now is a basic tool for sizing pipes without all the bells, loops & whistles. I can learn the fancy pipe networking stuff later.
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Oct 12, 2006
I can not get the slope analysis to come up with 10 slope ranges. My ranges are set to 10, but my Range details populate to 22? Screen Cap included. I've tried this with Equal Interval, Quartile, and Standard Deviation. Nothing will create 10 intervals.
My "slope analysis" surface style is set to show Slope, with the range set to 10. In surface properties, my range is set to 10.
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Jul 11, 2013
We have an "original" existing surface of a ditch, a massive ditch. dredging has taken place and now we have a new existing surface of the ditch. the client wanted to see the delineation between the areas that are now 3" lower, 6" lower and 9" lower (and so on). I was able to do this easily with elevation banding. now the client would like some sort of GPS uploadable based on the color map that shows the banding. How to accomplish this without having someone set there and set points along the different colors on the surface. that is going to be incredibly time consuming. is there an automated way to export the data that I am looking for?
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Nov 6, 2013
It appears color transparency for surface analysis is now broke in 2013. It used to work in 2011 because I use to bring in Lidar data and run elevation analysis over top of aerial photos. I never found any type of resolution. Is Autodesk aware and are they working on this?
This issue reminds me of the Point Cloud issue with Lidar data right after 2013 came out. It worked in 2011 just fine and then 2013 they broke it. After calls to autodesk support and thread exchanges plus several months of waiting, service pack 2 for 2013 fixed the lidar classification issue.
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Mar 27, 2012
I need to be able to do a slope analysis on a surface, but I need to have it calculate the slope in a direction - east and north. Any way to do it? Maybe even if there is a quick way to apply slope labels to a surface based on a grid - say the slope from N0.00, E0.00 to N0.00 to E 25.00
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Feb 8, 2013
I have two surface ( OG surface and Gravel LIFT ), i need to have a table that Show me Depths range between those two surface with a color range, in a table and also to be able to see it in the the top surface.
Basically, In every Spot of the surface, need to represent a Depth range between the OG and the gravel surface by a specific Color.
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Sep 24, 2013
I have access to the educational version of Autocad Civil 3D 2014. I am familiar with the program, but unfortunatley I can't access the Planning and Analysis Workspace in the workspace pulldown menu. Infact I can't find it anywhere. How I can download it? Or even customize my own tab so that I have a similar layout to the planning and analysis workspace
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Mar 2, 2012
I am modeling an existing storm system that is under capacity. After running the model, some of the flows seem to be incorrect. I have one section that has a known flow of 1.31 cfs. The results for this pipe section shows 28.82 cfs (peak flow during analysis) and 6.06 cfs (design flow capacity). The pipe section is a 15" with constructed slope of 0.0088 ft/ft. The max velocity attained is 23.48 ft/sec. I know that the downstream is undersized. Could this flow rate be caused by the downstream backflows? The model is setup as hydrodynamic and rational method. My inertial terms are set at ignore, time step = 0, junction surface area = 0 and variable time step with safety factor 75%. I have gutter bypass flows and my sag structures have ponded area set at 100.
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Aug 12, 2013
I get this message FDO provider 'OSGeo.SHP.3.8' everytime I try to import polylines into shapefile format.
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Sep 7, 2011
Within the UKIE Country Kit there is a lsp that exports/imports Surface elevation Analysis data (attached lisp file)
Is it possible to be modified so that a Slope analysis is exported/imported and how easy/difficult it is to do (or even make the alterations themselves!).
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
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Mar 30, 2012
same drawing, two computers both with Civil 3D 2012 SP1.
one computer opens the drawing and the surface analysis by slopes shows perfectly, the othe computer opens same drawing and it shows no slope analysis but everything else. They can even change the style and analysis and can view slope arrows, elevations, etc.
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Aug 14, 2012
We are being requested by more municipalities to perform a hydraulic analysis on the water system before we can extend water to the site. This is very crude doing it by hand. I have seen different softwares available that run inside of Civil 3D that will perform the hydraulic analysis. How others were performing hydraulic analysis.
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Oct 31, 2012
Is there a way to automatically adjust the cut range colours (REDS) in the attached scheme such that the lighter colours denote lower cut depths in the same way that the fill range does (Greens)
I know they can be manually adjusted but when the analysis is run again the colours revert back
(No connection with Autodesk other than using the products in the real world)
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
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Jun 20, 2013
I am working on a commercial development with multiple large tenants with multiple standards. To begin to verify the preliminary grading is in compliance, I use the slope arrow surface analysis type.
Due to my multiple standards, I find myself changing these values frequently. My question : Is there a way to make the slope arrow the default analysis type when you are in the surface properties dialog box?
I know it is not a major issue, but it is annoying and repetitive, having to go to the list box, and select slope arrow over and over again. One workaround I have considered to avoid this maddening situation is to make two surfaces, with each criteria assigned to the surface properties and simply paste the main surface into each. Then control which is visible based on what I need to look at.
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Sep 17, 2013
I need to create 3 hr storms for use in SCS analysis. I created new .pcp files and.cds files. The .cds file has three hours worh of preciptauon ratios establihed by the City I'm working in. The .pcp has the new total inches in the Custom row. The calculations seem to rum OK; but I am getting a negative outflow in the table at the 50 % point (not on the curve). I've looked a the distribution table and there is nothing funny going on around the half way point.
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Jul 10, 2012
I was undertaking a cut and fill analysis but the values were very different. Evaluating spot levels the depth was given as 1.2m but the volume surface stated it was only .6m.
After a while I noticed that the master surface had been "corrupted" duing a recovery, all definitions to the controlling corridor and other objects had been removed and a snapshot added with the description "added during recovery".
I had to remove the surface and start from scratch re-building the definitions.
Civil3D 2013 / 2014
Windows 7 Professional 64-bit
Intel(R) Core(TM) i7-3820 CPU @ 3.60GHz (8 CPUs), ~4.0GHz With 32768MB RAM, AMD FirePro V4900, Dedicated Memory: 984 MB, Shared Memory: 814 MB
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