AutoCAD Civil 3D :: Exclude Area From Volume Calculations
Apr 4, 2013
I must monthly calculate quantities. So i have 3 surfaces, one is representing the original ground level and the other two the measurements on the end of the months. Between the measurements I calculated volume. But I want calculate the quantities what is inside of the original ground level, what is outside that I want to exclude from the calculations. There is a way how to crop that surfaces to match with the original ground level?
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Dec 30, 2013
I have my original surface I created with my point file and break lines. I created a new surface and was able to determine how to create my grading at a 3:1 slope that stopped at the surface I created from the point files. From there I went back to my Grading Groups and selected the Automatic Surface Creation.
From there I don’t know if I have to selected the Volume Base Surface and selected the surface I am grating from or if I can simply create a volume tin surface selecting the new surface and the original point surface for comparison. How do I make sure the Volume I am getting include the volume from the grading slope?
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Dec 9, 2013
I have been asked to do volume calculations using Civil 3D for some concrete piles for a oil/survey company. I have done volume calculations for site and land development projects but nothing to do with concrete piles before. It also appears I am the only person with any Civil 3D back ground in the office. I did mention my experience with Civil 3D was limited but I was trying to expand it by looking for Civil 3D jobs and working through the 2012 Mastering AutoCAD Civil 3D book.
I am assuming doing volume calculations for concrete piles is quite different from doing volume calculations for grading plans. The company has been primary using AutoCAD Maps and doesn't have much set up for AutoCAD Civil 3D yet.
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Aug 24, 2012
Any way for Vol. calcualtions to be shown in Acre Feet? I am doing Volums of lakes and the client needs a report of the number of Acre Feet in the lake. To get the data, he uses a depth finder hooked up to a GPS. I can do this by hand calculator but using Civil 3D 2013 would be much easier.
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Jan 17, 2013
I have learned the hard way that Civil 3D has a Curve Tolerance value that is to be used when applying sample lines and computing average end cross section volume calculations along an alignment with a curve. How I discovered this was by double checking my self and using a straight alignment verses an alignment with a curve. When using the alignment with a curve the average end cross section volumes differ. I did some reading in Autocad help and it mentions that sometimes a curve tolerance value is needed when using curves and this value is changed in the compute or edit materials window. What is a curve tolerance?" The edit materials window prompts a user to enter a Degree value. How do I calculate this curve tolerance value? I assume it is related to one of the values of a curve.
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Feb 13, 2012
What I would like to do is create volume calculations from spot heights. All i have is 4 rectangles with a 10m interval, nine elevations, no points or anything else.
What steps do i have to go through to make this possible?
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Aug 30, 2012
I am working on a project, I was given a file with the contour already mapped out. I am tasked with finding volume of a fill I had to create. I made a 3-D polyline at the elevation I want my fill to start from and going down to my final grade. How can I make surfaces with my map. I do not have any files to make the surface off of. What is the easiest way I can make a layer, TIN has already been done but no surfaces are in the file.
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Apr 4, 2012
I can see the area of a TIN surface no worries (under Surface Properties/Statistics/Extended), but want I want to get is surface area of a TIN volume surface where no "extended" option seems to be available to view the area information with this type of surface.
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Nov 13, 2012
Civil 3d project. My familiary with actual road construction is quite basic.
I'm at the stage where good Civil 3d practices need to be employed when generating volumes. Attach are two files showing a road section with links and layers & also, the profile.
1. Like to turn off the links first of all and show labels instead.
2. How does the total depth of the gravel road (0.3' for gravel, 0.5' for aggregate base) factor in the profile view? What shown is the EG(in green) and FG,the top of the gravel road.
3. The cross section view: Three surfaces were used, the top of the gravel, the bottom of the base and the Existing ground, Is this correct?
4. Is there two sets of Volumes? 1. Cut and Fill areas, 2. Pavement structure: Volume of the gravel and volume of the aggregate base.
5.Refer to 4. So the Cut and Fill areas need to be done first, then the pavement structure, correct. ?
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Dec 17, 2012
I am trying to calculate the area of the attached file. Just the Blue section. Is there a faster way to calculate the area than using the "area" command, then going through and selecting each line, then each arc, over and over again? I also tried making a poliline that follows the entire pattern at the width I wanted, then using the "area" command for the "object" that is the poliline. This is faster, but does not give me the correct area. It says that the calculated area does not take into consideration the width of the poliline. The width of the poliline is very important in my application, and will sometimes be changed. Than a new area will be needed with the new width.
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Mar 13, 2012
I am using autocad to find areas of a stream cross section such that when we take a water height measurement of the stream in the field, we can easily get the area from a spreadsheet since the cross section of the stream at any height will be known (once I get done in AutoCAD).
To further illustrate my needs, I have attached a picture. I need all the seperate areas between the red lines (the red lines are equally spaced vertically and have lengths that go end to end to the edges of the stream).
I have been hatching between the red lines and taking the areas of each hatched object. However, this is a slow and tedious process.
Hatching is not the issue because I can hatch multiple objects at once using the create seperate hatch option.
What I need is a way to list all the hatched object's areas into a text file so that I can easily copy and paste them into an excel file. Even if it is not a nice and neat list, I can atleast use a find for "area" to get them into a nice list a little faster.
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Aug 11, 2013
Any routine or tool that simplifies calculating and labeling floor areas?
Currently, I draw a polyline around the desired area, list it to get the square footage and then create a text line and type in the square footage. This method takes multiple steps and is easy to mistype the area.
I would love a simple tool that would let you draw a polyline and automatically label it for you.
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May 6, 2004
I am relatively new to AutoCAD LT and I am constructing floorplans and measuring the area in m2. My problem is that my areas are not adding up correctly. We are investigating possible future redesigning of units, and although the outer boundary of the building is the same, when I add up the individual units this total area does not add up correctly. While trying to figure out what was going on I traced one unit exactly on another layer and compared areas between the two identical polygons....and they have different areas!?!?!?
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Aug 15, 2012
I have been dealing with a tolerance issue when trying to create room area calculations in Revit. There seems to be a tolerance that is set to somewhere under 9" if two walls are to close together it will ignore the area.
Although if you are using the area calculation this tolerance is set much finer. and it seems to work just fine. I have already tried to create a multicategory schedule but cant combine rooms and areas. I have attached an image .
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Jun 16, 2009
How do I exclude a selected area within a photo from reacting to the fill tool(paint bucket)?
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Sep 18, 2008
Is it possible to draw a shape in Corel Draw and get the area from it? IE: Square Inches.
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Sep 15, 2011
how to calculate the gross area of a portion of a building - it is about one-third of one floor of the entire building but is comprised of several rooms. I need this for both tenant area and for figuring the area of insulated floors for purposed of energy-code analysis.
Is there a way of just going about it the old AutoCAD way via a P-Line? I know there are no P-Lines in Revit, but is there an easy way of doing this?
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Oct 2, 2012
Is there a way to generate a volume report for a bounded volume surface?
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Jun 18, 2012
I'm working with TIN surfaces, doing cut/fill comparisons for a surface mine.
My volume surface statistics show a cut volume of 5167.22 cy and fill volume of 8456.18 cy.
The sample line group volume report show cumulative cut of 5527.67 cy and fill of 8465.56 cy.
What could be some causes of this disparity. All reference surfaces are built from points and use a non-destructive boundary.
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May 31, 2013
I've read a few threads on this way back but cannot locate them. I have two surfaces and create a volume surface and it reported the volume as 493 cy. I then ran some sample lines at 25 foot interval and the total volume is reported as 964 cy.
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Apr 24, 2013
I want to use it as my primary hydrologic and hydraulic modeler. It only makes sense. Well, I got the program to work and had things linked in and was able to route a storm through the network. But when I routed the storms, I had to model double the storage that i expected.
So I went back to the program I'm familiar with - Pondpack by Benltey - and designed the same system I routed in SSA in that program - and got the storage volume that I would expect for a site of this size - about 2 acres.
Is there possibly a setting that I'm missing that makes my outlet structures route slower or less than they should? Or is there some other reason that a system would give this kind of inflated need for storage?
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Feb 25, 2013
I have an issue with using Bounded Volume or Adding a Boundary to Volume Surface things so bad... = incorrect volumes.. sometimes extremely incorrect.. I understand that the surface rectangle when a boundary is added but this could be horrible if not checked.
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Sep 26, 2012
I made a lake using lines set at different elevations to show depth, is there a way to calculate the volume of the lake in AutoCAD 2013 from just the line elevations and area without having to make the lines a solid surface
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Mar 13, 2008
Is there a way to exclude points from a point group that have no description?
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Dec 13, 2012
I can't seem to confirm the discharge table that hydraflow produces in hydraflow hydragraphs. I think I understand the equation itself (it's been a while since I took hydraulics), but can't understand where I'm making my error (if I am). Normally I trust the stage/discharge curve that hydraflow produces, but the City Engineer is asking me to confirm the values by hand and show them on the plans. Is there a link to an detention pond example that shows how a curve (the outflow values) was generated (confirms the discharge table at various elevations)? The equation is on page 85 of the users manual.
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Jun 5, 2013
I built a containment dike using the grading functions in Autocad Civil 3D. I set up the feature lines at the top toes of the embankment and graded nicely down to the original dtm. I want to use user defined contour to get the interior storage from the original dtm up to a selected elevation within the containment dike. The containment dike forms an enclosed area. I know I could use infill and add a false bottom to the embankment surface (triangulation from bottom toe of embankment across to opposite embankment) but I want to check storage from original ground dtm.
Is there a workaround method to do this without creating infill? I know I need to get down to two surfaces to get a calculation.
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Nov 14, 2013
im trying to create a point group by including all points and then excluding the points i don't need. it doesnt seem to be removing anything from the group. i used to do this all the time in ldd. is it still possible in c3d?
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Oct 23, 2012
How to changes the settings for the "Square Area" in mapcheck's closure summary. When I right-click the dwg name in the Settings tab of Toolspace and choose Edit Drawing Settings, then Ambient Settings, I see the Area settings, but in the closure summary, there is also "Square Area". Why are these both there? It WOULD be nice to show sq. ft. as well as acres, but I can't find anywhere to edit it.
Civil 3D 2012
Windows 7 Enterprise SP1
Dell Precision T3400
(Q9550 @ 2.83 GHz)
8GB RAM
Nvidia Quadro GTX 650 Ti BOOST
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Sep 6, 2012
i'm jumping into 3d late in life...playing with volumes. i've created surfaces from aerial surveys and have saved the surfaces as separate files. i would now like to run volumes of the two as they represent the same quarry site from different years. it appears (?) i need to have both surfaces listed in prospector to run volumes. each separate file has its own surface listed. question...how do i get (import?) the second surface drawing into one of the files so i have both listed and can run volumes? i see where i can create a surface from importing a .tin file...but i don't see how to export the surface as a .tin file.
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Jan 7, 2013
I have an existing survey surface, and I want to know how much cubic yard of materials to fill up from the bottom to elevation 876. See attached image for detail. Here is what i am going to do....
- i will create a surface of the fill area (from bottom cotours up to el 876) then do a volume surface bwt existing ground surface and the new fill area surface to get the volume of it? Is this a right way to do?
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Aug 28, 2013
I am using C3D 13 and have created a surface using points that were shot on a 50' grid. Now I am looking for the easy button to get a volume.
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