TIN Volume Surface

[Madison]

I've been lurking on these forums for few months now and Just have to say this is an awesome site!!

 

I work for a sand and gravel company, we just upgraded to C3D 2009, and still fairly new at it.. I created a surface using current and final topography to determine how much material will be mined/stripped.. I would like to take advantage of the 3D capabilities and create a 3D view of the material that will be removed.. Am I using the correct funtion by creating a "TIN Volume Surface" to show material mined in 3D??

 

(i.e. I picture it like a Peanut, where I have the bottom and top shell, but would like to see the actual nut in 3D.. )

 

Thanks.

[rustysilo]

Yeah tin volume surface is what you need. I think in the surface style is where you might need to look for display options.

 

Go to the help file and type "volume" in the search box. Then go to the listing "Calculating Earthwork". That might give you an idea.

[rustysilo]

I just doodled around with one and for your display options you want to look at the surface style as well as the analysis tab in your surface properties where you can add user contours and/or play with the elevation banding, etc.

 

If you want a line depicting the intersection of your cut/fill areas check out this thread at theswamp.

[Madison]

Thanks for the replies Rusty!

 

I have been trying different scenarios with little luck..

 

I've created the surface however only getting "top" of the mineable reserve and not the "bottom" to create my 3D visual of what will eventually be mined out..I'm basically only getting the top half of the two surfaces, if that makes any sense..

 

I shouldnt have to re-create any comaparison surfaces in order to do this, but maybe I do??

[rustysilo]

Did you create three surfaces in total? You need your EG (existing ground) surface, your FG (finished ground) surface, and then the TIN Volume surface which compares the two. Is this how you did it?

 

If you are that far and the volume surface isn't what you want to see I'm guessing you are wanting more of a 3d solid representation of the cut and fill areas in which case I am not sure how you would accomplish that.

 

Let us know and we'll see what can be done.

[Madison]

Did you create three surfaces in total? You need your EG (existing ground) surface, your FG (finished ground) surface, and then the TIN Volume surface which compares the two. Is this how you did it?

 

If you are that far and the volume surface isn't what you want to see I'm guessing you are wanting more of a 3d solid representation of the cut and fill areas in which case I am not sure how you would accomplish that.

 

Let us know and we'll see what can be done.

 

Yup. I do have both comparison ground surfaces (Existing + Final) completed. I then went and created a new TVS and used the two surfaces as my "base" and "comparison" in hopes of creating a solid 3D representation of what will eventually be mined out..

So far in my attempts it seems that I am getting the top half of the reserve. I ran a volume on the surface and its not the volume I'm looking for.

 

My best analogy of what I'm trying to do is creating the top and bottom halves of a peanut, then presenting the entire inside (Nut) in a 3D solid view...

[rustysilo]

Yeah I thought that's what you were after. I don't know if you can do that, at least with Civil 3d tools. Civil 3d seems to just create a top surface of the two compared surfaces. Is this for your own use or for an actual presentation before a committee or something?

 

I would suggest posting this question at theswamp.org to see what those guys say. Be sure to post a link to this discussion so they have the background.

 

All I can think of at this point is to actually view the two original surfaces in a 3d view and you'll see where they intersect and toy around with the surface styles to see if you can get them looking anything like you want.

 

Second thought might be to take the 3d faces of the surfaces into regular AutoCAD and try to piece them together where the cut and fill areas are. Or you could take the contours (or even the grid) in there and try to loft them all together or something. That could be tasking so I hope there's a better way for you.

 

When you get a good answer be sure to post it so we all know how you worked it out.:wink:

[surveyroads]

Hi There!

 

Im just trying to compare my original ground surface with my finished borrow surface.

 

I have measured off of the same control however the difference in volumes I am receiving does not seem realistic its not enough.

 

I think that my elevation for original ground and the elevation for original ground provided to me in the previous surface must be different.

 

If any one has any ideas or advice on how to properly measure this volume or match the original ground up on the surfaces this would be greatly appreciated.

 

Thanks!!

[Tyke]

surveyroads, please don't do multiple postings!