How to find volume of land cutting filling at particular level?

[dhavaldj36]

Hello sir 

I am trying to find a volume of land cutting filling at particular level?

I import point file in surface 1

how to make surface 2 for particular level ..

I have no idea .

[sboon · Accepted solution]

Create a rectangular polyline at the appropriate elevation.  Add it to an empty surface as a breakline..

[antoniovinci · Accepted solution]

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SBoon wrote:

Create a rectangular polyline

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Why "rectangular", Steve?
That breakline should be a polygon having the exact shape of the building foundation...
Then you calculate cut/fill ground movements with the _REPORTSURFACEVOLUME command, isn't it? 

[sboon]

The original post doesn't mention a building, so I assumed that the calculation includes the entire area of the original surface.  A rectangular polyline large enough to cover the whole area is the quickest way to create a planar surface, and it's easy to edit.

For a building footprint I would probably convert the polyline into a featureline and then use gradings to create the finished surface.  This has several advantages, including automatic surface creation with a boundary that cleans up any inside corners, and it allows me to use a cut slope to get a more accurate volume.