Designing/Calculating Stockpile Volume

[Rob Cross]

I have a landfill that I am trying to calculate the amount of fill that can
be placed in the working cell. I tried using the Design Pad Template but it
keeps calculating down.

I am using the outline of the cell. I created a 3D Polyline around the cell
using the existing grades. All of the grades are between 488 and 550. I
want to know how much fill I can place with slopes at a 3:1 and a top
elevation of 569.

Any ideas on how to do this?

--
Rob Cross
B.L. Payne and Associates, Inc.
11479 Colerain Avenue
Cincinnati, Ohio 45252
Phone: (513) 385-5922
Fax: (513) 385-8103
Cell: (513) 543-2901

[Rob Cross]

In the chance that someone else may benefit from this, here is the email I sent to Carlson, which makes more sense than my post here, and the response I received from Lon at Tech Support:

I am working in a landfill and need to find the remaining volume of a cell to a certain elevation. The base of the cell ranges from 488 to 550. The fill will be placed on a 3:1 slope from the base of the cell to an elevation of 569.

I have been trying to use the Design Pad Template routine in Carlson Survey 2006. I drew a 3D Polyline around the base of the cell getting elevations from a surface model. Like I said above, the base of the cell ranges from 488 to 550. When I select the perimeter, it is holding the base as 569 and calculating inwards and down to some arbitrary elevation (496, 502, etc.).

What am I doing wrong? Is there a way to have it create a pile instead of a pit?

Rob,

Set the "Source of Slope Target Surface Model" to "Elevation", and the "Slope Direction" to inside. After picking the 3d pad polyline and setting the slopes, the routine will prompt you for the pad elevation. Enter 569 for the elevation, then continue through the prompts. To compute volumes, you will be prompted to select the existing surface file. Let me know if you have any questions or problems.

Sincerely,

Lon Watson
Technical Support Specialist
Carlson Software, Inc.
email: lwatson@carlsonsw.com
Phone: (606) 564-5028
Web: www.carlsonsw.com

This worked perfect. It took me less than a minute to do. I found another work around that took about 45 minutes. I first created a surface at the 569 elevation. I then chose the 3D Polyline around the perimeter of the cell. In the Design Pad Template routine, I used the 569 TIN as my surface and it created the intersections from my 3D Polyline to my surface.

I got very nearly the same results in both methods. The way Lon told me to do it was just a lot faster.

Thank you Lon and Carlson for providing excellent Tech Support.


"Rob Cross" <rcross.blp@fuse.net> wrote in message news:e3avdk$ru6$1@update.carlsonsw.com...

I have a landfill that I am trying to calculate the amount of fill that can
be placed in the working cell. I tried using the Design Pad Template but it
keeps calculating down.

I am using the outline of the cell. I created a 3D Polyline around the cell
using the existing grades. All of the grades are between 488 and 550. I
want to know how much fill I can place with slopes at a 3:1 and a top
elevation of 569.

Any ideas on how to do this?

--
Rob Cross
B.L. Payne and Associates, Inc.
11479 Colerain Avenue
Cincinnati, Ohio 45252
Phone: (513) 385-5922
Fax: (513) 385-8103
Cell: (513) 543-2901

[j_wes_cole]

Rob,

The best way I know to do this is to create two surfaces, one that is your
existing surface and the other is your proposed surface. If I understand,
you will need to calculate your horizontal extents all the way around at
the 3:1 slope. The best routine I've found in Carlson to create a
proposed surface (no-points needed) is the "Make 3D Grid File". The help
menu will walk you through how to do this. Then you create a 3D grid file
for your existing surface--with points & breaklines. Run the "Two
Surface" command and you should get a pretty accurate volume calculation.
I always view my two surfaces with the 3D view to make sure they are
tieing together.

Hope I haven't confused you more!

Wes Cole


Rob Cross wrote:

I have a landfill that I am trying to calculate the amount of fill that
can
be placed in the working cell. I tried using the Design Pad Template
but it
keeps calculating down.

I am using the outline of the cell. I created a 3D Polyline around the
cell
using the existing grades. All of the grades are between 488 and 550.
I
want to know how much fill I can place with slopes at a 3:1 and a top
elevation of 569.

Any ideas on how to do this?

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