Apologies for the delayed reply, but work kept me busy from checking the topic was still active.
In case anyone is interested, the solution came by intersecting the columns’ geometry on the XY plane with the bounding boxes of the floors. Then, I could retrieve the enclosed areas to determine the overlap where floor openings should be made.
It requires installing Bimorph and Spring packages. Also, lacing and setting the list levels are primordial for intersecting the geometries.
For further guidance, @GavinNicholls and @viktor_kuzev guides were handy to achieve the routine. Below, I have included some links from them to those who want to dig deeper.
However, to make the openings work I set an offset at Z. Axis to go cut the floors, due to he cut-out were by default at the bottom of the floors.
Please the script workspace and examples:
Jorge