Grasshopper Layering with Mesh input


I modelled a building in Autodesk Maya and exported it as a mesh. Now I want to layer it in multiple layers horizontally. Does anyone know how to do and what plugin or script to use? I allready tried a script but it comes up with layers that are partly solid constantly through the object. So some rooms inside are blocked. Offsetting the mesh wouldn’t be an option because the mesh I exported from Maya has allready a thickness.

I am very thankful for your help. Good evening!