Floor and ceiling contact with identical room

Hi, @chris

If I have a highrise building with the same floorplans, I just want to simulate mid-floor and set floor and ceiling constructions into connecting with identical rooms instead of connecting with outside. Which component may I use?
Thank you very much!

Hi @Congrui,

You can use Dragonfly for this.

afbeelding

Hi @Erikbeeren
Thank you very much!