Road Cut and Fill - Calculating Volume or Comparing Cross-Sections?

[goyalam]

Hey everyone,

When Civil3D creates cut and fill volumes for road earthwork, is Civil3D simply applying a 2D 'section' method for each interval to calculate volume, or is it accurately calculating 3D volumes using DTM/TIN etc.?

Thanks

[AllenJessup · Accepted solution]

Depends n the method you choose. If you use Composite it creates prisms from the TINs.

[goyalam]

Cheers Allen, just a quick followup question.

Do you know which is more prominent in the field?

i.e. Average End vs Composite, especially in the context of road design?

Thanks

[AllenJessup]

I don't have a general feel for that. But I'd imagine Composite would be more prevalent since there is much more data being used in that calculation. 

[PeterKozub · Accepted solution]

Dear C3D users

Please review the below tasks

1) average end area from the corridor 

2) use the above until you are done The best way sir is as follows

3) create a surface for each item you need a number 

4) generate a volume surface to calc yes you know the volume

5) why 3-4 above because the surfaces can be shown on section

6) export the surface to GPS machine control and build it....

Average end area vols is dead horse from the old days a waste of time kind of like layout with station/offset Please do your research end area is a convoluted dead horse
maybe some use xsections for mass haul profile/etc.
serves well for section plots as well.

So why not use both!!! best read the manual 

You pick the method all good depending on the end result

Best regards

 ***@PeterKozub the post has been moderated due to ground rule violations. Please stick to the ground rules.***