Intersecting surfaces

hi everybody
i am new at rhino. i import point cloud for layers i want to use. i create the mesh and i use drape to take a surface. when i use big distance between points in drape command, the surfaces are intersecting. how do i avoid intersections of surfaces in this procedure?
thanks

Perhaps you have a file to upload?

// Rolf

4.txt (639.9 KB)
9.txt (642.1 KB)
here are two files…
Thanks for answering Rolf…

Hello - can you upload the Rhino file that you have so far?

-Pascal

Hi Pascal
here is the file…f1.3dm (297.0 KB)

and the point cloud and the nurbs surfaces
f2.3dm (1.7 MB)

hi Pascal, did you have a look at the model?

Hi John - it looks to me like you’ll need to be more pains-taking about surfacing the point clouds or meshes - neither the meshes nor the surfaces are very accurate as far as hitting the points goes One surface is unlikely to be the answer here unless it is quite dense.

-Pascal

thanks!