HELP! Trying to Calculate Volume from Contours Lines in an area

[Anonymous]

I have contour lines ranging from 386m to 398m elevation. I need the get the volume within a controlled area above 386m.

I created a TIN surface changing the surface layer to the one my contour lines is set on. 

I also created a surface from the boundary I need to get the volume from. (Elevation of the boundary was already set to 386m)

After I went to my volume dashboard and added the Volume Surface

I then get the following cut and fill report:

I am hoping someone can help me know if this is done correctly and if the volume above the base is correct? Also how to read the cut and fill report correctly - is the volume 1017698.57 cu Meters?

Thank you!

[Joe-Bouza]

I am having trouble understanding your workflow images? are you changing the OG?

Oh ... the third image is zoomed in and through me off. ok I agree so far

I would do it this way set the control area perimeter and elevation 386 add this to surface <control area>

make a volume surface OG =base, <control area>= reference.

the cut volume is your number

Assuming you are in a metric drawing the values are square meters and cubic meter

the report is telling you the are of your control perimeter Sqr meter, cut vol  the fill volume and net. 

ordinarily the computation would involve both cut and fill , net is the  algebraic difference

[Jeew-m · Accepted solution]

Hi,

As joe stated your workflow is not that clear.

As a understand what you need is this.

Create a surface from the contours (Surface A). 

Then create a feature line at an elevation of 386 where you need the volume comparison.

Create a new surface (Surface B) and add the feature line to surface B as a break line.

Finally create a Volume surface and add Surface A and Surface B for comparison.

Thanks

[lynn_zhang]

Hello @Anonymous , welcome to Autodesk Community!

Just checking to see if your problem has been solved. Did the response from @Jeew-m help answer your question? Let us know if you still need help.