Doubel Layered Gridshell

Hi,

I'm new with grasshopper and on this forum. For my first grashopper project I try to make a double layered gridshell. First I made a mesh and put it in kangaroo. From the output from kangaroo I selected separately de gridlines in X and Y direction and gave them all 4 different offsets. Now I try to give it a squared piping. I got already quite far by searching on this forum but the squared piped layers are still intersecting each other (as drawn in the image; black is the current situation and blue is the desired situation). Also, the gridlines from the output of kangaroo aren’t the centerlines of the squared piping. Could someone give me advice how I could solve this?

Thanks in advance.

Regards,

Wessel