Lisp to delete overlapping lines with same X & Y and different z

[asantosGEG]

Hi everyone,

I have some files with a lot of solids elements and I want to create surfaces from these elements.

Since in C3D, surfaces do not work with solids, I explode the solids and the result will be an overlapping of lines on the plan but with different z's,

I needed a routine that would go through the file and delete the lines with similar x's and y's but different z's. The user would indicate the difference in z's. The difference in z would be indicated by the user.
I'd really appreciate your help, as deleting these lines will take a lot of time.
The image below shows what I want the lisp routine to delete the red lines.
Thank you

[hosneyalaa]

Hi 

Can you attached example drawing

And put your question here 

https://forums.autodesk.com/t5/civil-3d-customization/bd-p/190

[Joe-Bouza]

OOTB: MAPCLEAN

OOTB: OVERKILL

Change the drawing canvas to FRONT and delete with a crossing window

Those should do it handily. Your part is clearly 3d. If you were not aware the Civil3d is a specific type of 3d that does and doesn't really allow for multiple x,y different z.

Not that 3d parts cant be used, they can, but not in a civil3d surface