Hi my friends,
I have an issue and i simplified the core of the problem in this shape as shown in the photo,
I want to create a floor from this shape which have a loop of openings as shown, so i want to make an opening as a shape of square 1 in floor 2 and then an opening as a shape of 2 in the floor No. 3 and so on. ( without duplicated the openings in all the floors)
I tried many times but i didn’t reach to the best way to take yet.
I will appreciate any suggestions,
Thanks in advance 
