AutoCAD Map 3D :: Creating Topology To Determine Soil Type And Acres Of Parcels Of Land
Nov 18, 2013
I have downloaded the SSURGO file from Web Soil Survey. They are in .shp files, I have imported the spatial files into AutoCad Map 3d 2012. My goal is to create a Topology so that I can detemine the soil type and acres of parcels of land.
When I click on the polygon in my drawing it is a closed polygon with double line or overlapping lines and it does has object data but it is part of the line not a point as I am used to.
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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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Dec 6, 2013
Lets say, I have an Extrude feature built on a Rectangle as Sketch Profile. Is it possible to programmatically edit that Sketch, add one line in the middle dividing the Rectangle and replay the Extrude, so that I get Rectangular solid and a Partition surface in between?
This was not possible as a user, but programmatically if its allowed to turn ON some Non-Manifold flag and allow this. If allowed, this probably may not be a single Extrude feature doing both Solid and Surface, but could split into 2 Extrudes.
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Dec 2, 2013
When I work on a site I need to identify several different situations and organizing those situations is getting hard, how do you do it?
The land usually has multiple soil types, a max of 4 types A, B, C, D
I also need to track the impervious, grass and tree areas going to an unknown number of outfalls
The impervious area can be broken down into structures, roadway, parking lots, sidewalks and other
Also you need to have this information for your existing conditions and your impervious conditions.
Usually I just delineate everything and hatch them with a layer like C-IMPV-A for proposed impervious soil type A
I have also tried creating parcels to represent the areas delineated, but when you get a couple hundred parcels it gets confusing.
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Mar 1, 2012
Is there a way to determine the type of ACAD object that the user selected? I need to retrieve the value from either a dimension or text. The info could be in either format so the lisp routine needs to determine what was selected so the correct vla-get command is used.
Once I determine what the object is I can use an if statement to retrieve the value.
;user selects the object
(setq dimobj (vlax-ename->vla-object(car(entsel))))
;If ACAD object is a dimension do this.
(setq dimvalue (vla-get-textoverride dimobj))
;If ACAD object is text do this.
(setq dimvalue (vla-get-textstring dimobj))
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Nov 15, 2012
Is it possible to insert a formula or is there an existing expression I could use to calculate area in acres from a General Overall Length line label if I input the width?
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Apr 27, 2011
How to list the area of a polyline or by points and have the output displayed in acres?
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Jan 2, 2014
I am wondering if there is a way to modify the Map Check Report to include Acreage Calculations like it used to. I am only given the square feet and need both. I know I can calculate it easily, but it would be nice if it were there by default.
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May 15, 2012
I have an existing contour surface. I would line to calculate the volume of topsoil which will be 300 mm following below the existing contours.
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Oct 27, 2011
I was wondering how to plot various soil profiles on a 3D Model of a deep excavation site. I've plotted the exterior of the area, borehole to borehole, using AutoCAD Civil 3D 2012. The problem I'm facing is that when I start plotting the layers of the different soils, say from borehole 1 to borehole 2, it ends up protruding from the face of the distance from borehole 1 to borehole 2. I'm not sure of how to make sure the plot is on a fixed axis, like y-z axes, to ensure I have a reference point. How can I go about this?
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Oct 20, 2011
How can create in vba with line type ?
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Dec 9, 2011
I am trying to create a new line type for water, drain, and sanitary. i want the lines to have letters on them
-----------W-------------W-----------
------------S--------------S-----------
------------D--------------D-----------
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Jul 12, 2012
how do you put a “>”. I’m trying to make a linetype that looks like -> -> -> i know 2,(but i don’t know what goes here),-2
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Apr 18, 2013
We have a client who is looking to dispose of a large quantity of excess soil on a vacant property. We plan to hold the elevations near the northern property line, slope 2% in a southerly direction, then tie in at 3:1 slopes along the southern property line. What is the best method to determine where the break point between the 2% and the 3:1 tie grades would be?
Civil3D 2013
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Oct 23, 2012
I am trying to create a new linetype. It is a simple linetype, made up of a continuous chain of capsules that I've attached here. I understand that linetypes require shape files and line definition files. However, AutoCAD isn't even telling me how to create the shape file(s) I need to begin making the linetype.
The capsule is .12 units long at its widest, and will need to connect end-to-end.
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Oct 19, 2005
How can I create a top soil stripping line in an assembly?
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Mar 21, 2013
How can i change the front (lines facing to the streets) line color from parcel? My parcels lines must have two colors.
I send in attach an example.
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Jan 10, 2013
I'm trying to clean up the drawing. I have erased everything, but there are still 20572 parcels somewhere in the drawing that I couldn't delete.
The file is too big to attach so use the link to download:
[URL].........
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Apr 4, 2012
Create a large number of polygons (plines, parcels, whatever) that represent spaces on a building plan
Assign a space number to the polygon
Link the space number to an Excel spreadsheet (or Access DB) so that the characteristics of the polygon (line and fill color, for example) are chosen based on the "owner" of the space (e.g.; Engineering, Common Areas, etc.).
Display a label stating the space number and the space name. Is this best done with "Parcels" in Civ3D, or with "Polygons" in Map, or some other way.
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Sep 13, 2011
Why cant you extrude a hatch? I am trying to draw soil in 3d and the materials in the 3d library aren't really working for me. I wanted to extrude gravel hatch from 2d material bank.
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Nov 12, 2013
I want to get vertex from survey figure or parcel.
I have seen this for feature line: [URL] .....
But "Autodesk.AECC.Interop.Land" doesn´t have AeccLandSurveyFigure.
How can I do it? Is it necessary convert survey figure to polyline?
Autocad Civil 3D 2014 +SP1
Quad Core Intel i7 3770-cpu 3.40Ghz.
ssd samsung 840 pro 512gb+ssd samsung 840 pro 256 gb+1tb hdd
32gb RAM 1600 Mhz.
nVidia Quadro 2000.
Win 7 Pro 64bit
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Aug 9, 2012
Is there a way to improve the error of closure of a Parcel. I have one Parcel that has an EOC of 0.0161'. That's a little higher than I like to see. I understand that some of this has to do with the precision of the analysis. But with bearings to the second and distances to the hundredth, I'd like to think we could do better than that.
I suppose that if I changed the POB the closure might improve. But I want the POB to be the closest corner to an existing monument.
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Jun 24, 2013
was showing it off in class and it's always worked before but now it's not working on any of the computers. Just tried it on my laptop with the same results. I originally thought it was an issue with 2014 but 2013 isn't working either (and I know it was working in the past).
The only thing I can think of is my computer recently upgraded to IE10. Could that be it?
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Mar 7, 2011
I am trying to detect overlaps between two different features. They are, at the core, shape files from a GIS system and we have AutoCAD Civil 3D 2009.
I have reviewed the steps to test for Topo within a feature but don't know how to test topo between two features. I need to test for and identify "Overlaps" between feature A and Feature B and when Feature A is "Not Entirely Within" Feature B.
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Aug 28, 2012
Why I can't create a topology for spatial object (feature classes)? It works only for drawing objects.
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Dec 22, 2011
I have two set of points with O.D. attached (points_1:data_1 and points_2:data_2). I want each point of the first set get the O.D. of the NEAREST point of the second set. Something like "point overlay". The problem is that AutoCAD Map can't overlay point topologies, and that makes sense, since entities don' t actually overlap.
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Jul 20, 2011
I have successfully created and defined a topolgy in Map 3D using a Visual Lisp routine that I cobbled together from CREATE.LSP. What I'd really like to do is be able to access that data and create closed polylines and centroids without going through the menu interface. The only documentation that I've been able to find is the Mapping Commands section of the Help file.
I found several commands, but they rely on user input to work. I might be able to work around this by typing a dash before the command line to suppress dialog boxes except for the fact that MAPCLPLINE does not respond to this method.
I noticed in CREATE.LSP that there was a TPM_MTNBUILD command that (apparently) was used to build the topology. Are there similar commands that I just haven't found yet?
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Apr 3, 2013
Any lisp routine that will remove "phantom parcels" in a drawing? They are the parcels many topics on this discussion forum have topics on, that can be selected but can't be deleted by any simple means.
The drawing is relatively new...with minimal objects in it. Just some Feature Lines and 3D Polylines. I have Sites in my drawing...but no parcels. Only thing in the sites are the feature lines. When I do a Q SELECT for the parcels it selects and highlights my feature lines, which is weird.
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Aug 21, 2012
Any way to create a parcel from an object (closed polyline) and populate the parcel with Object Data from the polyline?
I have imported a .shp file into a drawing and the result is many closed polylines with properties similar to the attached image. I would like to bring this data into a parcel object for labeling purposes.
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Jan 21, 2011
Auto cad map 2011...unhanded exception error occurs when I create a large (2500+) polygon topology. In fact, initially I only use acad point for centroids to minimize complexity, until I know the map is clean.. Later, when a topology is assured, I bring in attributes as the centroids. I am only using four layers. Have been doing this for five years...always used acad map 2006 and had no issues. Have had the same problem with all releases after 2008, and was hoping this would be the moment..but it's still the same. Incidentally...I even moved to a 64 bit box,6 gigs of ram and 64 bit 2011version of acad map in the hope that this would go away.. How I regret giving up version 2006.
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Aug 8, 2013
The attached assembly contains 3 parts modelled in slightly different ways. All parts fail when the dimension of 600 is changed to 200 in the Tool Part, probably because a different face comes into play...but it's the same body.
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