Surfaces do not overlap error?!?!?

[Postmaster_G]

Can anyone tell me why two simple surfaces that clearly overlap in the vertical and in orbit seem fine give me an error "Surfaces do not overlap"?

[conormccartney3897]

well first off, what are trying to do that produces this error?

[Postmaster_G]

I have a design surface and a surveyed surface and I am trying to do my usual cut fill report.

I have never seen this error before.

I have created two tin surfaces that overlap and I am trying to create the tin volume surface to give me my cut/fill numbers.

[doni49]

1) what version are you using?

2) what specific steps are you using to do this comparison?

I just tried it using C3D 2012 and even if I move the proposed surface so that it DOESN'T overlap the existing, I don't get errors although it reports zeros for the volumes.  Here's a screenshot and I've also attached the dwg file that I used for testing.

[Postmaster_G · Accepted solution]

Turns out, i am an idiot.

I copied the survey surface from the surveyors drawing and pasted into my drawing (which i have done before).

This time, it told me to rebuild the surface, so I did.

When I did so, it lost all of the data and the tin disappeared.

The surface that I thought was there was the same area but the previous survey!  Thank you for the help.

I shall mark this as solved through stupid...

[doni49]

Don't beat yourself up to bad -- we've all done stuff like that.

But thanks for letting us know it's resolved.

[Postmaster_G]

Indeed, and thank you for looking!!!