hello, i have a problem if someone could help me please , i was trying to add a new column with a certain formula i make myself on the table is it possible ?? , and if not is it possible to let the program add the exact area of the volume calculated in the table not only the Plan area as shown in the photo attached , thanks in advance.
At this time formulas don't work in C3D tables.
Rick Jackson
Survey CAD Technician VI
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It would be best if you provided the drawing.
I am guessing that this is a volume surface.
I am guessing that this is a volume surface.
Christopher Stevens
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What volume are you looking for?
The vertical donut that each color represents or the corresponding 0.25 thick slice?
The vertical donut that each color represents or the corresponding 0.25 thick slice?
Christopher Stevens
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@ChrisRS yes this is a volume surface. and I am looking for the hatched part volume shown in the pic ( donut-shaped, and not only the .25 thick slice and talking about the overall depth volume for this area .
You cannot do this automatically in a table.
You can accurately calculate the donut volume, using the Volumes Dashboard and Bounded Volums.
- Sart with your volume surface, say "VOL"
- Preserve VOL by working on a copy, "VOL2".
Use copy to make a copy of VOL; you can paste it off to the side for better visibility. Rename this surface to VOL2. - Stylize VOL2 to show contours. In this case I would use an interval of 0.25m. You can add user defined contours as well; if so, make sure the style displays user contours.
- Extract the contours and/or user contours from VOl2 (_AeccSurfaceExtractObjects)
- Open Volumes Dashboard and add VOL2
- Select VOL2 and click the Add Bounded Volume button.
Select one of the extracted contours.
For the pink area this would be the contour between violet and pink.
The resulting bounded area is like a vertical sided 'cookie', excluding everything outside of the pink area. (cookie cutter) - With VOL2 still selected, click the Add bounded volume button again.
Select another one of the extracted contours.
For the pink area this would be the contour between pink and blue.
The resulting bounded area is a 'cookie', including everything inside the pink area. - Subtract the bounded volume of Step 7 from the bounded volume of Step 6.
This is the pink 'donut' volume. - Click the Insert Cut/Fill Summary button to add a "Cut/Fill Summary" block to the drawing.
Notes:
- Vol2 is dynamic to VOL.
- The extracted contours are not dynamic. If VOL changes, the calculated volumes will be out of date.
- You can get the 'donut' volume in one bounded surface by creating an 'almost donut' from the extracted contours. Put small breaks in the 2 extracted contactors and join with lines connecting them at each side of the gaps. Think of the outline of the letter 'C' with a very small gap. You can use this as a boundary for a bounded surface that gives the donut volume. I do not think that this worth the effort. At a later date, the cookie subtraction is easier to figure out than this 'clever' trick.
I have not investigated Project Explorer (PE) with regard to this issue.
PE is very powerful. It appears that it is actively being developed/improved. It is bright and shiny.
I think that PE effectively ends Autodesk/Civil 3D development of standard/existing Civil 3D tables and reports.
Christopher Stevens
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Good luck with PE.
I think you have a workable method, @nezarismael7. Hopefully my instructions will be useful to someone else.
Looking at your original post, I do not understand what is incorrect. It is not obvious to me. Incorrect tables are indeed a problem.
Christopher Stevens
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the original post was about the same matter, I was trying to know how the area and volume in the table are calculated ( explained in the photo attached below ), thanks for all your instructions.
Are you talking about Are or Volume discrepancies?
Without your drawing, I really can't troubleshoot.
The Area is the area of the various donuts.
The Volume is the area of the various cookies.
The pink and I checked the pink and blue areas. the look OK to me.
Volume by average end area:
full bottom of violet area = 215+279+369 = 863
full top of violet area = 279+369 = 648
violet volume = (863+648)/2 x 0.25 = 189 (190 in table) CHECK
full bottom of pink area = 279+369 = 648
full top of pink area = 369
pink volume = (648*369)/2 x 0.25 = 127 (128 in table) CHECK
violet volume = (863+648)/2 x 0.25 = 189 (190 in table) CHECK
I'm still not seeing a problem.
Christopher Stevens
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Accepted solution
I am with you regarding no simple way to check outside of the program.
The best that I can do:
Pink donut range is 1.0 m to 1.25 m.
Average Depth = 1.125 m
Pink area = 278.73 sq. m.
Pink volume = 278.73 x 1.125 = 324 cu. m.
How does this compare to your donut volume calculated with bounded volumes?
You could use information in this table to manually create an AutoCAD table or Excel table with cumulative area, average donut depth and donut volume.
I am curious. why do you need the donut volume?
Christopher Stevens
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