Import topography from Leapfrog to Rhino to Revit

Hi everyone,
I export the soil data from Leapfrog software, it create a mesh in Rhino. But when I import them to Revit, it take an error Same point with X, Y. I realized this is error because when I export a soil layer, it look like a “box”, not a surface. How I can take a surface only?

HI Ngoc Tuan Ho,

What is the original Soil data format? Can you post that and the Mesh? Thanks.

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The soil data format is mesh. But I need only the top surface to import to revit.
You can find the sample file here.
Layer5C.3dm (9.2 MB)

The mesh needs some work. Here I ran the Check command on the mesh to see what might cause it to return as invalid.

Be aware that Revit does not like extremely short edges.

https://www.rhino3d.com/inside/revit/1.0/guides/rir-grasshopper#tolerances

The ideal input here for Revit would be the points of just the top surface, with no duplicates.

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one possibility to clean these up quicker would be to use ShrinkWrap in Rhino 8.

Then a QuadRemesh to ensure edge lengths conform to Revit Tolerances.

The couple intersecting faces are probably around here.

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The other (ideal) option is to use points.

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Thanks for your enthusiastic help, I could make it. Have a nice day! :smiley: