how to create sunk slab

[kamaluddin.shaikh9]

[barthbradley]

...one approach would be to model the vertical side as a wall between 2 floor levels and then join all of them together. 

[ennujozlagam]

hello, you can this create two floors, one is minus value level (sunken slab) > use slab edge (create a slab family as profile) and join geometry them together. thanks

[2020ara0039]

Sir/Ma’am will you please explain it in more detail.