## AutoCAD Civil 3D General Discussion

Valued Contributor
Posts: 88
Registered: ‎03-22-2011
Message 1 of 6 (6,338 Views)

# how calculate area for surface

6338 Views, 5 Replies
07-07-2011 03:20 AM

Hello everybody

how can i calculate the area for specific reigon of the surface?

can i know the volume for this region for a certain elevation ??

thanks

Add a boundary and the statistics tab will give you the 2d and 3d area. for the volume create a plane surface at the desired elevation and compute the volume between.

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Message 2 of 6 (6,330 Views)

# Re: how calculate area for surface

07-07-2011 05:08 AM in reply to: basman12

Add a boundary and the statistics tab will give you the 2d and 3d area. for the volume create a plane surface at the desired elevation and compute the volume between.

Thank you

Joseph D. Bouza, P.E. (one of 'THOSE' People) Civil 3D 2012 & 2013
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Message 3 of 6 (6,318 Views)

# Re: how calculate area for surface

07-07-2011 05:31 AM in reply to: basman12

In the ribbon : Analyze > Volumes > Bounded volumes

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Contributor
Posts: 19
Registered: ‎05-15-2011
Message 4 of 6 (6,176 Views)

# Re: how calculate area for surface

This may solve for volumes but what about 3d surface area.

Are you telling me I have to add a boundary to a surface and go the surface area statistics every time i want a 3d surface area for a different polygon?

New Member
Posts: 1
Registered: ‎10-29-2014
Message 5 of 6 (469 Views)

# Re: how calculate area for surface

10-29-2014 02:04 PM in reply to: basman12

Its not often that I feel like I can contribute more on topics on here but for this one I think I might have an good technique to build on what the others said.

So basically I ran into a problem where Im taking Cut/Fill Volumes for a site but not the entire site was being paved, so if I lowered my entire finished surface by 6" or whatever.. Then in the areas where there wasnt paving I wasn't getting an accurate cut/fill results... so heres what I did...

* Calculate your cut/fill volumes from your Existing Surface vs. Final Surface -0.5'

* Calculate the area of your total site

* Calculate the area of the paved portions

* Multiply the difference by the thickness of your pavement and subtract that number from your cut.

Hope that helps!

Mentor
Posts: 202
Registered: ‎10-04-2012
Message 6 of 6 (458 Views)

# Re: how calculate area for surface

10-29-2014 06:49 PM in reply to: AVerrengia

You might have saved a lot of time just using the volumes dashboard. Then using the bounded volumes option in there to restrict your calculation to a limited area.

Once you add the bounded areas they stay linked. So you can move them around or adjust the polygon and the volumes update!

The current bounded area you ahve selected get highlighted as well..

When your done -> right click -> copy to clipboard to quickly paste into excel...

Kapanther

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