I have a drawing with 3 different levels. basically my basement, then you come up the stairs, and there is a little landing to go into the backyard, then there is another set of stairs 18" high(3 steps) then the main floor.

So in the software(latest version)
I have
https://gyazo.com/6467f00ad1d08eb1dbb55495ea459527 for my elevation settings.

this is what it looks like:
https://gyazo.com/bc0e870a591003d5b882b6bb21506fa8

the dark grey is the section that should be 1'6"
where the white section should be 8' tall.

anyone see why this is rendering this way?